summaryrefslogtreecommitdiff
path: root/drivers/base
AgeCommit message (Collapse)Author
2020-03-04driver core: Add missing annotation for device_links_write_lock()Jules Irenge
Sparse reports a warning at device_links_write_lock() warning: context imbalance in evice_links_write_lock() - wrong count at exit The root cause is the missing annotation at device_links_write_lock() Add the missing __acquires(&device_links_srcu) annotation Signed-off-by: Jules Irenge <jbi.octave@gmail.com> Link: https://lore.kernel.org/r/20200214204741.94112-19-jbi.octave@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-04driver core: Add missing annotation for device_links_read_lock()Jules Irenge
Sparse reports a warning at device_links_read_unlock() warning: warning: context imbalance in device_links_read_unlock() - unexpected unlock The root cause is the missing annotation at device_links_read_unlock() Add the missing __releases(&device_links_srcu) annotation Signed-off-by: Jules Irenge <jbi.octave@gmail.com> Link: https://lore.kernel.org/r/20200214204741.94112-20-jbi.octave@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-04driver core: Rename deferred_probe_timeout and make it globalJohn Stultz
Since other subsystems (like regulator) have similar arbitrary timeouts for how long they try to resolve driver dependencies, rename deferred_probe_timeout to driver_deferred_probe_timeout and set it as global, so it can be shared. Cc: linux-pm@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Thierry Reding <treding@nvidia.com> Cc: Mark Brown <broonie@kernel.org> Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Saravana Kannan <saravanak@google.com> Cc: Todd Kjos <tkjos@google.com> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Kevin Hilman <khilman@kernel.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Rob Herring <robh@kernel.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Link: https://lore.kernel.org/r/20200225050828.56458-6-john.stultz@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-04driver core: Remove driver_deferred_probe_check_state_continue()John Stultz
Now that driver_deferred_probe_check_state() works better, and we've converted the only user of driver_deferred_probe_check_state_continue() we can simply remove it and simplify some of the logic. Cc: linux-pm@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Thierry Reding <treding@nvidia.com> Cc: Mark Brown <broonie@kernel.org> Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Saravana Kannan <saravanak@google.com> Cc: Todd Kjos <tkjos@google.com> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Kevin Hilman <khilman@kernel.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Rob Herring <robh@kernel.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Link: https://lore.kernel.org/r/20200225050828.56458-5-john.stultz@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-04driver core: Set deferred_probe_timeout to a longer default if ↵John Stultz
CONFIG_MODULES is set When using modules, its common for the modules not to be loaded until quite late by userland. With the current code, driver_deferred_probe_check_state() will stop returning EPROBE_DEFER after late_initcall, which can cause module dependency resolution to fail after that. So allow a longer window of 30 seconds (picked somewhat arbitrarily, but influenced by the similar regulator core timeout value) in the case where modules are enabled. Cc: linux-pm@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Thierry Reding <treding@nvidia.com> Cc: Mark Brown <broonie@kernel.org> Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Saravana Kannan <saravanak@google.com> Cc: Todd Kjos <tkjos@google.com> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Kevin Hilman <khilman@kernel.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Rob Herring <robh@kernel.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Link: https://lore.kernel.org/r/20200225050828.56458-3-john.stultz@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-04driver core: Fix driver_deferred_probe_check_state() logicJohn Stultz
driver_deferred_probe_check_state() has some uninituitive behavior. * From boot to late_initcall, it returns -EPROBE_DEFER * From late_initcall to the deferred_probe_timeout (if set) it returns -ENODEV * If the deferred_probe_timeout it set, after it fires, it returns -ETIMEDOUT This is a bit confusing, as its useful to have the function return -EPROBE_DEFER while the timeout is still running. This behavior has resulted in the somwhat duplicative driver_deferred_probe_check_state_continue() function being added. Thus this patch tries to improve the logic, so that it behaves as such: * If late_initcall has passed, and modules are not enabled it returns -ENODEV * If modules are enabled and deferred_probe_timeout is set, it returns -EPROBE_DEFER until the timeout, afterwhich it returns -ETIMEDOUT. * In all other cases, it returns -EPROBE_DEFER This will make the deferred_probe_timeout value much more functional, and will allow us to consolidate the driver_deferred_probe_check_state() and driver_deferred_probe_check_state_continue() logic in a later patch. Cc: linux-pm@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Thierry Reding <treding@nvidia.com> Cc: Mark Brown <broonie@kernel.org> Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Saravana Kannan <saravanak@google.com> Cc: Todd Kjos <tkjos@google.com> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Kevin Hilman <khilman@kernel.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Rob Herring <robh@kernel.org> Signed-off-by: John Stultz <john.stultz@linaro.org> Link: https://lore.kernel.org/r/20200225050828.56458-2-john.stultz@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-04driver core: Add fw_devlink kernel commandline optionSaravana Kannan
fwnode_operations.add_links allows creating device links from information provided by firmware. fwnode_operations.add_links is currently implemented only by OF/devicetree code and a specific case of efi. However, there's nothing preventing ACPI or other firmware types from implementing it. The OF implementation is currently controlled by a kernel commandline parameter called of_devlink. Since this feature is generic isn't limited to OF, add a generic fw_devlink kernel commandline parameter to control this feature across firmware types. Signed-off-by: Saravana Kannan <saravanak@google.com> Link: https://lore.kernel.org/r/20200222014038.180923-3-saravanak@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-04driver core: Reevaluate dev->links.need_for_probe as suppliers are addedSaravana Kannan
A previous patch 03324507e66c ("driver core: Allow fwnode_operations.add_links to differentiate errors") forgot to update all call sites to fwnode_operations.add_links. This patch fixes that. Legend: -> Denotes RHS is an optional/potential supplier for LHS => Denotes RHS is a mandatory supplier for LHS Example: Device A => Device X Device A -> Device Y Before this patch: 1. Device A is added. 2. Device A is marked as waiting for mandatory suppliers 3. Device X is added 4. Device A is left marked as waiting for mandatory suppliers Step 4 is wrong since all mandatory suppliers of Device A have been added. After this patch: 1. Device A is added. 2. Device A is marked as waiting for mandatory suppliers 3. Device X is added 4. Device A is no longer considered as waiting for mandatory suppliers This is the correct behavior. Fixes: 03324507e66c ("driver core: Allow fwnode_operations.add_links to differentiate errors") Signed-off-by: Saravana Kannan <saravanak@google.com> Link: https://lore.kernel.org/r/20200222014038.180923-2-saravanak@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-04driver core: Skip unnecessary work when device doesn't have sync_state()Saravana Kannan
A bunch of busy work is done for devices that don't have sync_state() support. Stop doing the busy work. Signed-off-by: Saravana Kannan <saravanak@google.com> Link: https://lore.kernel.org/r/20200221080510.197337-4-saravanak@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-04driver core: Call sync_state() even if supplier has no consumersSaravana Kannan
The initial patch that added sync_state() support didn't handle the case where a supplier has no consumers. This was because when a device is successfully bound with a driver, only its suppliers were checked to see if they are eligible to get a sync_state(). This is not sufficient for devices that have no consumers but still need to do device state clean up. So fix this. Fixes: fc5a251d0fd7ca90 (driver core: Add sync_state driver/bus callback) Signed-off-by: Saravana Kannan <saravanak@google.com> Cc: stable <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200221080510.197337-2-saravanak@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-04device property: Export fwnode_get_name()Heikki Krogerus
This makes it possible to take advantage of the function in the device drivers. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://lore.kernel.org/r/20200302135353.56659-8-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-04PM: sleep: wakeup: Use built-in RCU list checkingMadhuparna Bhowmik
Pass cond argument to list_for_each_entry_rcu() to fix the following false positive lockdep warning and other uses of list_for_each_entry_rcu() in wakeup.c. (CONFIG_PROVE_RCU_LIST = y) [ 331.934648] ============================= [ 331.934650] WARNING: suspicious RCU usage [ 331.934653] 5.6.0-rc1+ #5 Not tainted [ 331.934655] ----------------------------- [ 331.934657] drivers/base/power/wakeup.c:408 RCU-list traversed in non-reader section!! [ 333.025156] ============================= [ 333.025161] WARNING: suspicious RCU usage [ 333.025168] 5.6.0-rc1+ #5 Not tainted [ 333.025173] ----------------------------- [ 333.025180] drivers/base/power/wakeup.c:424 RCU-list traversed in non-reader section!! Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-03-04PM: sleep: core: Use built-in RCU list checkingMadhuparna Bhowmik
This patch passes the cond argument to list_for_each_entry_rcu() to fix the following false-positive lockdep warnings: (with CONFIG_PROVE_RCU_LIST = y) [ 330.302784] ============================= [ 330.302789] WARNING: suspicious RCU usage [ 330.302796] 5.6.0-rc1+ #5 Not tainted [ 330.302801] ----------------------------- [ 330.302808] drivers/base/power/main.c:326 RCU-list traversed in non-reader section!! [ 330.303303] ============================= [ 330.303307] WARNING: suspicious RCU usage [ 330.303311] 5.6.0-rc1+ #5 Not tainted [ 330.303315] ----------------------------- [ 330.303319] drivers/base/power/main.c:1698 RCU-list traversed in non-reader section!! [ 331.934969] ============================= [ 331.934971] WARNING: suspicious RCU usage [ 331.934973] 5.6.0-rc1+ #5 Not tainted [ 331.934975] ----------------------------- [ 331.934977] drivers/base/power/main.c:1238 RCU-list traversed in non-reader section!! [ 332.467772] WARNING: suspicious RCU usage [ 332.467775] 5.6.0-rc1+ #5 Not tainted [ 332.467775] ----------------------------- [ 332.467778] drivers/base/power/main.c:269 RCU-list traversed in non-reader section!! Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-03-04PM: runtime: Add pm_runtime_get_if_active()Sakari Ailus
pm_runtime_get_if_in_use() bumps up the PM-runtime usage count if it is not equal to zero and the device's PM-runtime status is 'active'. This works for drivers that do not use autoidle, but for those that do, the function returns zero even when the device is active. In order to maintain sane device state while the device is powered on in the hope that it'll be needed, pm_runtime_get_if_active(dev, true) returns a positive value if the device's PM-runtime status is 'active' when it is called, in which case it also increments the device's usage count. If the second argument of pm_runtime_get_if_active() is 'false', the function behaves just like pm_runtime_get_if_in_use(), so redefine the latter as a wrapper around the former. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> [ rjw: Changelog ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-02-26drivers/base/power: add dpm_sysfs_change_owner()Christian Brauner
Add a helper to change the owner of a device's power entries. This needs to happen when the ownership of a device is changed, e.g. when moving network devices between network namespaces. This function will be used to correctly account for ownership changes, e.g. when moving network devices between network namespaces. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: "Rafael J. Wysocki" <rafael@kernel.org> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-26device: add device_change_owner()Christian Brauner
Add a helper to change the owner of a device's sysfs entries. This needs to happen when the ownership of a device is changed, e.g. when moving network devices between network namespaces. This function will be used to correctly account for ownership changes, e.g. when moving network devices between network namespaces. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-10firmware_loader: load files from the mount namespace of initTopi Miettinen
I have an experimental setup where almost every possible system service (even early startup ones) runs in separate namespace, using a dedicated, minimal file system. In process of minimizing the contents of the file systems with regards to modules and firmware files, I noticed that in my system, the firmware files are loaded from three different mount namespaces, those of systemd-udevd, init and systemd-networkd. The logic of the source namespace is not very clear, it seems to depend on the driver, but the namespace of the current process is used. So, this patch tries to make things a bit clearer and changes the loading of firmware files only from the mount namespace of init. This may also improve security, though I think that using firmware files as attack vector could be too impractical anyway. Later, it might make sense to make the mount namespace configurable, for example with a new file in /proc/sys/kernel/firmware_config/. That would allow a dedicated file system only for firmware files and those need not be present anywhere else. This configurability would make more sense if made also for kernel modules and /sbin/modprobe. Modules are already loaded from init namespace (usermodehelper uses kthreadd namespace) except when directly loaded by systemd-udevd. Instead of using the mount namespace of the current process to load firmware files, use the mount namespace of init process. Link: https://lore.kernel.org/lkml/bb46ebae-4746-90d9-ec5b-fce4c9328c86@gmail.com/ Link: https://lore.kernel.org/lkml/0e3f7653-c59d-9341-9db2-c88f5b988c68@gmail.com/ Signed-off-by: Topi Miettinen <toiwoton@gmail.com> Link: https://lore.kernel.org/r/20200123125839.37168-1-toiwoton@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-08Merge tag 'armsoc-drivers' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM SoC-related driver updates from Olof Johansson: "Various driver updates for platforms: - Nvidia: Fuse support for Tegra194, continued memory controller pieces for Tegra30 - NXP/FSL: Refactorings of QuickEngine drivers to support ARM/ARM64/PPC - NXP/FSL: i.MX8MP SoC driver pieces - TI Keystone: ring accelerator driver - Qualcomm: SCM driver cleanup/refactoring + support for new SoCs. - Xilinx ZynqMP: feature checking interface for firmware. Mailbox communication for power management - Overall support patch set for cpuidle on more complex hierarchies (PSCI-based) and misc cleanups, refactorings of Marvell, TI, other platforms" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (166 commits) drivers: soc: xilinx: Use mailbox IPI callback dt-bindings: power: reset: xilinx: Add bindings for ipi mailbox drivers: soc: ti: knav_qmss_queue: Pass lockdep expression to RCU lists MAINTAINERS: Add brcmstb PCIe controller entry soc/tegra: fuse: Unmap registers once they are not needed anymore soc/tegra: fuse: Correct straps' address for older Tegra124 device trees soc/tegra: fuse: Warn if straps are not ready soc/tegra: fuse: Cache values of straps and Chip ID registers memory: tegra30-emc: Correct error message for timed out auto calibration memory: tegra30-emc: Firm up hardware programming sequence memory: tegra30-emc: Firm up suspend/resume sequence soc/tegra: regulators: Do nothing if voltage is unchanged memory: tegra: Correct reset value of xusb_hostr soc/tegra: fuse: Add APB DMA dependency for Tegra20 bus: tegra-aconnect: Remove PM_CLK dependency dt-bindings: mediatek: add MT6765 power dt-bindings soc: mediatek: cmdq: delete not used define memory: tegra: Add support for the Tegra194 memory controller memory: tegra: Only include support for enabled SoCs memory: tegra: Support DVFS on Tegra186 and later ...
2020-02-08Merge branch 'merge.nfs-fs_parse.1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs file system parameter updates from Al Viro: "Saner fs_parser.c guts and data structures. The system-wide registry of syntax types (string/enum/int32/oct32/.../etc.) is gone and so is the horror switch() in fs_parse() that would have to grow another case every time something got added to that system-wide registry. New syntax types can be added by filesystems easily now, and their namespace is that of functions - not of system-wide enum members. IOW, they can be shared or kept private and if some turn out to be widely useful, we can make them common library helpers, etc., without having to do anything whatsoever to fs_parse() itself. And we already get that kind of requests - the thing that finally pushed me into doing that was "oh, and let's add one for timeouts - things like 15s or 2h". If some filesystem really wants that, let them do it. Without somebody having to play gatekeeper for the variants blessed by direct support in fs_parse(), TYVM. Quite a bit of boilerplate is gone. And IMO the data structures make a lot more sense now. -200LoC, while we are at it" * 'merge.nfs-fs_parse.1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (25 commits) tmpfs: switch to use of invalfc() cgroup1: switch to use of errorfc() et.al. procfs: switch to use of invalfc() hugetlbfs: switch to use of invalfc() cramfs: switch to use of errofc() et.al. gfs2: switch to use of errorfc() et.al. fuse: switch to use errorfc() et.al. ceph: use errorfc() and friends instead of spelling the prefix out prefix-handling analogues of errorf() and friends turn fs_param_is_... into functions fs_parse: handle optional arguments sanely fs_parse: fold fs_parameter_desc/fs_parameter_spec fs_parser: remove fs_parameter_description name field add prefix to fs_context->log ceph_parse_param(), ceph_parse_mon_ips(): switch to passing fc_log new primitive: __fs_parse() switch rbd and libceph to p_log-based primitives struct p_log, variants of warnf() et.al. taking that one instead teach logfc() to handle prefices, give it saner calling conventions get rid of cg_invalf() ...
2020-02-07fs_parse: fold fs_parameter_desc/fs_parameter_specAl Viro
The former contains nothing but a pointer to an array of the latter... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-02-04mm/memory_hotplug: drop valid_start/valid_end from test_pages_in_a_zone()David Hildenbrand
The callers are only interested in the actual zone, they don't care about boundaries. Return the zone instead to simplify. Link: http://lkml.kernel.org/r/20200110183308.11849-1-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Oscar Salvador <osalvador@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-01-31Merge tag 'pm-5.6-rc1-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more power manadement updates from Rafael Wysocki: "Prevent cpufreq from creating excessively large stack frames and fix the handling of devices deleted during system-wide resume in the PM core (Rafael Wysocki), revert a problematic commit affecting the cpupower utility and correct its man page (Thomas Renninger, Brahadambal Srinivasan), and improve the intel_pstate_tracer utility (Doug Smythies)" * tag 'pm-5.6-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: tools/power/x86/intel_pstate_tracer: change several graphs to autoscale y-axis tools/power/x86/intel_pstate_tracer: changes for python 3 compatibility Correction to manpage of cpupower cpufreq: Avoid creating excessively large stack frames PM: core: Fix handling of devices deleted during system-wide resume cpupower: Revert library ABI changes from commit ae2917093fb60bdc1ed3e
2020-01-31mm/memory_hotplug: pass in nid to online_pages()David Hildenbrand
Patch series "mm/memory_hotplug: pass in nid to online_pages()". Simplify onlining code and get rid of find_memory_block(). Pass in the nid from the memory block we are trying to online directly, instead of manually looking it up. This patch (of 2): No need to lookup the memory block, we can directly pass in the nid. Link: http://lkml.kernel.org/r/20200113113354.6341-2-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Pavel Tatashin <pasha.tatashin@soleen.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-01-31mm: remove the memory isolate notifierDavid Hildenbrand
Luckily, we have no users left, so we can get rid of it. Cleanup set_migratetype_isolate() a little bit. Link: http://lkml.kernel.org/r/20191114131911.11783-2-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Michal Hocko <mhocko@suse.com> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Pavel Tatashin <pasha.tatashin@soleen.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Qian Cai <cai@lca.pw> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Pingfan Liu <kernelfans@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-01-31Merge branches 'pm-cpufreq' and 'pm-core'Rafael J. Wysocki
* pm-cpufreq: cpufreq: Avoid creating excessively large stack frames * pm-core: PM: core: Fix handling of devices deleted during system-wide resume
2020-01-29Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds
Pull SCSI updates from James Bottomley: "This series is slightly unusual because it includes Arnd's compat ioctl tree here: 1c46a2cf2dbd Merge tag 'block-ioctl-cleanup-5.6' into 5.6/scsi-queue Excluding Arnd's changes, this is mostly an update of the usual drivers: megaraid_sas, mpt3sas, qla2xxx, ufs, lpfc, hisi_sas. There are a couple of core and base updates around error propagation and atomicity in the attribute container base we use for the SCSI transport classes. The rest is minor changes and updates" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (149 commits) scsi: hisi_sas: Rename hisi_sas_cq.pci_irq_mask scsi: hisi_sas: Add prints for v3 hw interrupt converge and automatic affinity scsi: hisi_sas: Modify the file permissions of trigger_dump to write only scsi: hisi_sas: Replace magic number when handle channel interrupt scsi: hisi_sas: replace spin_lock_irqsave/spin_unlock_restore with spin_lock/spin_unlock scsi: hisi_sas: use threaded irq to process CQ interrupts scsi: ufs: Use UFS device indicated maximum LU number scsi: ufs: Add max_lu_supported in struct ufs_dev_info scsi: ufs: Delete is_init_prefetch from struct ufs_hba scsi: ufs: Inline two functions into their callers scsi: ufs: Move ufshcd_get_max_pwr_mode() to ufshcd_device_params_init() scsi: ufs: Split ufshcd_probe_hba() based on its called flow scsi: ufs: Delete struct ufs_dev_desc scsi: ufs: Fix ufshcd_probe_hba() reture value in case ufshcd_scsi_add_wlus() fails scsi: ufs-mediatek: enable low-power mode for hibern8 state scsi: ufs: export some functions for vendor usage scsi: ufs-mediatek: add dbg_register_dump implementation scsi: qla2xxx: Fix a NULL pointer dereference in an error path scsi: qla1280: Make checking for 64bit support consistent scsi: megaraid_sas: Update driver version to 07.713.01.00-rc1 ...
2020-01-29Merge tag 'linux-kselftest-5.6-rc1-kunit' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kselftest kunit updates from Shuah Khan: "This kunit update consists of: - Support for building kunit as a module from Alan Maguire - AppArmor KUnit tests for policy unpack from Mike Salvatore" * tag 'linux-kselftest-5.6-rc1-kunit' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: building kunit as a module breaks allmodconfig kunit: update documentation to describe module-based build kunit: allow kunit to be loaded as a module kunit: remove timeout dependence on sysctl_hung_task_timeout_seconds kunit: allow kunit tests to be loaded as a module kunit: hide unexported try-catch interface in try-catch-impl.h kunit: move string-stream.h to lib/kunit apparmor: add AppArmor KUnit tests for policy unpack
2020-01-29Merge tag 'driver-core-5.6-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is a small set of changes for 5.6-rc1 for the driver core and some firmware subsystem changes. Included in here are: - device.h splitup like you asked for months ago - devtmpfs minor cleanups - firmware core minor changes - debugfs fix for lockdown mode - kernfs cleanup fix - cpu topology minor fix All of these have been in linux-next for a while with no reported issues" * tag 'driver-core-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (22 commits) firmware: Rename FW_OPT_NOFALLBACK to FW_OPT_NOFALLBACK_SYSFS devtmpfs: factor out common tail of devtmpfs_{create,delete}_node devtmpfs: initify a bit devtmpfs: simplify initialization of mount_dev devtmpfs: factor out setup part of devtmpfsd() devtmpfs: fix theoretical stale pointer deref in devtmpfsd() driver core: platform: fix u32 greater or equal to zero comparison cpu-topology: Don't error on more than CONFIG_NR_CPUS CPUs in device tree debugfs: Return -EPERM when locked down driver core: Print device when resources present in really_probe() driver core: Fix test_async_driver_probe if NUMA is disabled driver core: platform: Prevent resouce overflow from causing infinite loops fs/kernfs/dir.c: Clean code by removing always true condition component: do not dereference opaque pointer in debugfs drivers/component: remove modular code debugfs: Fix warnings when building documentation device.h: move 'struct driver' stuff out to device/driver.h device.h: move 'struct class' stuff out to device/class.h device.h: move 'struct bus' stuff out to device/bus.h device.h: move dev_printk()-like functions to dev_printk.h ...
2020-01-27Merge tag 'devprop-5.6-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull device properties framework updates from Rafael Wysocki: "Add support for reference properties in sofrware nodes (Dmitry Torokhov) and a basic test for property entries along with fixes on top of it (Dmitry Torokhov, Qian Cai, Alan Maguire)" * tag 'devprop-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: software node: introduce CONFIG_KUNIT_DRIVER_PE_TEST usb: dwc3: use proper initializers for property entries drivers/base/test: fix global-out-of-bounds error software node: add basic tests for property entries software node: remove separate handling of references platform/x86: intel_cht_int33fe: use inline reference properties software node: implement reference properties software node: allow embedding of small arrays into property_entry software node: replace is_array with is_inline
2020-01-27Merge tag 'pm-5.6-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management updates from Rafael Wysocki: "These add ACPI support to the intel_idle driver along with an admin guide document for it, add support for CPR (Core Power Reduction) to the AVS (Adaptive Voltage Scaling) subsystem, add new hardware support in a few places, add some new sysfs attributes, debugfs files and tracepoints, fix bugs and clean up a bunch of things all over. Specifics: - Update the ACPI processor driver in order to export acpi_processor_evaluate_cst() to the code outside of it, add ACPI support to the intel_idle driver based on that and clean up that driver somewhat (Rafael Wysocki). - Add an admin guide document for the intel_idle driver (Rafael Wysocki). - Clean up cpuidle core and drivers, enable compilation testing for some of them (Benjamin Gaignard, Krzysztof Kozlowski, Rafael Wysocki, Yangtao Li). - Fix reference counting of OPP (operating performance points) table structures (Viresh Kumar). - Add support for CPR (Core Power Reduction) to the AVS (Adaptive Voltage Scaling) subsystem (Niklas Cassel, Colin Ian King, YueHaibing). - Add support for TigerLake Mobile and JasperLake to the Intel RAPL power capping driver (Zhang Rui). - Update cpufreq drivers: - Add i.MX8MP support to imx-cpufreq-dt (Anson Huang). - Fix usage of a macro in loongson2_cpufreq (Alexandre Oliva). - Fix cpufreq policy reference counting issues in s3c and brcmstb-avs (chenqiwu). - Fix ACPI table reference counting issue and HiSilicon quirk handling in the CPPC driver (Hanjun Guo). - Clean up spelling mistake in intel_pstate (Harry Pan). - Convert the kirkwood and tegra186 drivers to using devm_platform_ioremap_resource() (Yangtao Li). - Update devfreq core: - Add 'name' sysfs attribute for devfreq devices (Chanwoo Choi). - Clean up the handing of transition statistics and allow them to be reset by writing 0 to the 'trans_stat' devfreq device attribute in sysfs (Kamil Konieczny). - Add 'devfreq_summary' to debugfs (Chanwoo Choi). - Clean up kerneldoc comments and Kconfig indentation (Krzysztof Kozlowski, Randy Dunlap). - Update devfreq drivers: - Add dynamic scaling for the imx8m DDR controller and clean up imx8m-ddrc (Leonard Crestez, YueHaibing). - Fix DT node reference counting and nitialization error code path in rk3399_dmc and add COMPILE_TEST and HAVE_ARM_SMCCC dependency for it (Chanwoo Choi, Yangtao Li). - Fix DT node reference counting in rockchip-dfi and make it use devm_platform_ioremap_resource() (Yangtao Li). - Fix excessive stack usage in exynos-ppmu (Arnd Bergmann). - Fix initialization error code paths in exynos-bus (Yangtao Li). - Clean up exynos-bus and exynos somewhat (Artur Świgoń, Krzysztof Kozlowski). - Add tracepoints for tracking usage_count updates unrelated to status changes in PM-runtime (Michał Mirosław). - Add sysfs attribute to control the "sync on suspend" behavior during system-wide suspend (Jonas Meurer). - Switch system-wide suspend tests over to 64-bit time (Alexandre Belloni). - Make wakeup sources statistics in debugfs cover deleted ones which used to be the case some time ago (zhuguangqing). - Clean up computations carried out during hibernation, update messages related to hibernation and fix a spelling mistake in one of them (Wen Yang, Luigi Semenzato, Colin Ian King). - Add mailmap entry for maintainer e-mail address that has not been functional for several years (Rafael Wysocki)" * tag 'pm-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (83 commits) cpufreq: loongson2_cpufreq: adjust cpufreq uses of LOONGSON_CHIPCFG intel_idle: Clean up irtl_2_usec() intel_idle: Move 3 functions closer to their callers intel_idle: Annotate initialization code and data structures intel_idle: Move and clean up intel_idle_cpuidle_devices_uninit() intel_idle: Rearrange intel_idle_cpuidle_driver_init() intel_idle: Clean up NULL pointer check in intel_idle_init() intel_idle: Fold intel_idle_probe() into intel_idle_init() intel_idle: Eliminate __setup_broadcast_timer() cpuidle: fix cpuidle_find_deepest_state() kerneldoc warnings cpuidle: sysfs: fix warnings when compiling with W=1 cpuidle: coupled: fix warnings when compiling with W=1 cpufreq: brcmstb-avs: fix imbalance of cpufreq policy refcount PM: suspend: Add sysfs attribute to control the "sync on suspend" behavior PM / devfreq: Add debugfs support with devfreq_summary file Documentation: admin-guide: PM: Add intel_idle document cpuidle: arm: Enable compile testing for some of drivers PM-runtime: add tracepoints for usage_count changes cpufreq: intel_pstate: fix spelling mistake: "Whethet" -> "Whether" PM: hibernate: fix spelling mistake "shapshot" -> "snapshot" ...
2020-01-27Merge branches 'pm-core', 'powercap', 'pm-opp', 'pm-avs' and 'pm-misc'Rafael J. Wysocki
* pm-core: PM-runtime: add tracepoints for usage_count changes * powercap: powercap/intel_rapl: add support for JasperLake x86/cpu: Add Jasper Lake to Intel family powercap/intel_rapl: add support for TigerLake Mobile * pm-opp: opp: Replace list_kref with a local counter opp: Free static OPPs on errors while adding them * pm-avs: power: avs: qcom-cpr: remove duplicated include from qcom-cpr.c power: avs: fix uninitialized error return on failed cpr_read_fuse_uV() call power: avs: qcom-cpr: make cpr_get_opp_hz_for_req() static power: avs: qcom-cpr: remove set but unused variable power: avs: qcom-cpr: make sure that regmap is available power: avs: qcom-cpr: fix unsigned expression compared with zero power: avs: qcom-cpr: fix invalid printk specifier in debug print power: avs: Add support for CPR (Core Power Reduction) dt-bindings: power: avs: Add support for CPR (Core Power Reduction) * pm-misc: mailmap: Add entry for <rjw@sisk.pl>
2020-01-27Merge branches 'pm-cpufreq' and 'pm-sleep'Rafael J. Wysocki
* pm-cpufreq: cpufreq: loongson2_cpufreq: adjust cpufreq uses of LOONGSON_CHIPCFG cpufreq: brcmstb-avs: fix imbalance of cpufreq policy refcount cpufreq: intel_pstate: fix spelling mistake: "Whethet" -> "Whether" cpufreq: s3c: fix unbalances of cpufreq policy refcount cpufreq: imx-cpufreq-dt: Add i.MX8MP support cpufreq: Use imx-cpufreq-dt for i.MX8MP's speed grading cpufreq: tegra186: convert to devm_platform_ioremap_resource cpufreq: kirkwood: convert to devm_platform_ioremap_resource cpufreq: CPPC: put ACPI table after using it cpufreq : CPPC: Break out if HiSilicon CPPC workaround is matched * pm-sleep: PM: suspend: Add sysfs attribute to control the "sync on suspend" behavior PM: hibernate: fix spelling mistake "shapshot" -> "snapshot" PM: hibernate: Add more logging on hibernation failure PM: hibernate: improve arithmetic division in preallocate_highmem_fraction() PM: wakeup: Show statistics for deleted wakeup sources again PM: sleep: Switch to rtc_time64_to_tm()/rtc_tm_to_time64()
2020-01-24PM: core: Fix handling of devices deleted during system-wide resumeRafael J. Wysocki
If a device is deleted by one of its system-wide resume callbacks (for example, because it does not appear to be present or accessible any more) along with its children, the resume of the children may continue leading to use-after-free errors and other issues (potentially). Namely, if the device's children are resumed asynchronously, their resume may have been scheduled already before the device's callback runs and so the device may be deleted while dpm_wait_for_superior() is being executed for them. The memory taken up by the parent device object may be freed then while dpm_wait() is waiting for the parent's resume callback to complete, which leads to a use-after-free. Moreover, the resume of the children is really not expected to continue after they have been unregistered, so it must be terminated right away in that case. To address this problem, modify dpm_wait_for_superior() to check if the target device is still there in the system-wide PM list of devices and if so, to increment its parent's reference counter, both under dpm_list_mtx which prevents device_del() running for the child from dropping the parent's reference counter prematurely. If the device is not present in the system-wide PM list of devices any more, the resume of it cannot continue, so check that again after dpm_wait() returns, which means that the parent's callback has been completed, and pass the result of that check to the caller of dpm_wait_for_superior() to allow it to abort the device's resume if it is not there any more. Link: https://lore.kernel.org/linux-pm/1579568452-27253-1-git-send-email-chanho.min@lge.com Reported-by: Chanho Min <chanho.min@lge.com> Cc: All applicable <stable@vger.kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-24firmware: Rename FW_OPT_NOFALLBACK to FW_OPT_NOFALLBACK_SYSFSHans de Goede
This is a preparation patch for adding a new platform fallback mechanism, which will have its own enable/disable FW_OPT_xxx option. Note this also fixes a typo in one of the re-wordwrapped comments: enfoce -> enforce. Acked-by: Luis Chamberlain <mcgrof@kernel.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20200115163554.101315-4-hdegoede@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-22devtmpfs: factor out common tail of devtmpfs_{create,delete}_nodeRasmus Villemoes
There's some common boilerplate in devtmpfs_{create,delete}_node, put that in a little helper. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Link: https://lore.kernel.org/r/20200115184154.3492-6-linux@rasmusvillemoes.dk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-22devtmpfs: initify a bitRasmus Villemoes
devtmpfs_mount() is only called from prepare_namespace() in init/do_mounts.c, which is an __init function, so devtmpfs_mount() can also be moved to .init.text. Then the mount_dev static variable is only referenced from __init functions (devtmpfs_mount and its initializer function mount_param). Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Link: https://lore.kernel.org/r/20200115184154.3492-5-linux@rasmusvillemoes.dk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-22devtmpfs: simplify initialization of mount_devRasmus Villemoes
Avoid a bit of ifdeffery by using the IS_ENABLED() helper. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Link: https://lore.kernel.org/r/20200115184154.3492-4-linux@rasmusvillemoes.dk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-22devtmpfs: factor out setup part of devtmpfsd()Rasmus Villemoes
Factor out the setup part of devtmpfsd() to make it a bit easier to see that we always call setup_done() exactly once (provided of course the kthread is succesfully created). Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Link: https://lore.kernel.org/r/20200115184154.3492-3-linux@rasmusvillemoes.dk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-22devtmpfs: fix theoretical stale pointer deref in devtmpfsd()Rasmus Villemoes
After complete(&setup_done), devtmpfs_init proceeds and may actually return, invalidating the *err pointer, before devtmpfsd() proceeds to reading back *err. This is of course completely theoretical since the error conditions never trigger in practice, and even if they did, nobody cares about the exit value from a kernel thread, so it doesn't matter if we happen to read back some garbage from some other stack frame. Still, this isn't a pattern that should be copy-pasted, so fix it. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Link: https://lore.kernel.org/r/20200115184154.3492-2-linux@rasmusvillemoes.dk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-22driver core: platform: fix u32 greater or equal to zero comparisonColin Ian King
Currently the check that a u32 variable i is >= 0 is always true because the unsigned variable will never be negative, causing the loop to run forever. Fix this by changing the pre-decrement check to a zero check on i followed by a decrement of i. Addresses-Coverity: ("Unsigned compared against 0") Fixes: 39cc539f90d0 ("driver core: platform: Prevent resouce overflow from causing infinite loops") Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://lore.kernel.org/r/20200116175758.88396-1-colin.king@canonical.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-21Merge branch 'regmap-5.6' into regmap-nextMark Brown
2020-01-21regmap: fix writes to non incrementing registersBen Whitten
When checking if a register block is writable we must ensure that the block does not start with or contain a non incrementing register. Fixes: 8b9f9d4dc511 ("regmap: verify if register is writeable before writing operations") Signed-off-by: Ben Whitten <ben.whitten@gmail.com> Link: https://lore.kernel.org/r/20200118205625.14532-1-ben.whitten@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-01-17cpu-topology: Don't error on more than CONFIG_NR_CPUS CPUs in device treeZeng Tao
When the kernel is configured with CONFIG_NR_CPUS smaller than the number of CPU nodes in the device tree(DT), all the CPU nodes parsing done to fetch topology information will fail. This is not reasonable as it is legal to have all the physical CPUs in the system in the DT. Let us just skip such CPU DT nodes that are not used in the kernel rather than returning an error. Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Zeng Tao <prime.zeng@hisilicon.com> Link: https://lore.kernel.org/r/1579225973-32423-1-git-send-email-prime.zeng@hisilicon.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-17software node: introduce CONFIG_KUNIT_DRIVER_PE_TESTAlan Maguire
Currently the property entry kunit tests are built if CONFIG_KUNIT=y. This will cause warnings when merged with the kunit tree that now supports tristate CONFIG_KUNIT. While the tests appear to compile as a module, we get a warning about missing module license. It's better to have a per-test suite CONFIG variable so that we can do selective building of kunit-based suites, and can also avoid merge issues like this. Fixes: c032ace71c29 ("software node: add basic tests for property entries") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Alan Maguire <alan.maguire@oracle.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-01-15scsi: drivers: base: Propagate errors through the transport componentGabriel Krisman Bertazi
The transport registration may fail. Make sure the errors are propagated to the callers. Link: https://lore.kernel.org/r/20200106185817.640331-3-krisman@collabora.com Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-01-15scsi: drivers: base: Support atomic version of ↵Gabriel Krisman Bertazi
attribute_container_device_trigger attribute_container_device_trigger invokes callbacks that may fail for one or more classdevs, for instance, the transport_add_class_device callback, called during transport creation, does memory allocation. This information, though, is not propagated to upper layers, and any driver using the attribute_container_device_trigger API will not know whether any, some, or all callbacks succeeded. This patch implements a safe version of this dispatcher, to either succeed all the callbacks or revert to the original state. Link: https://lore.kernel.org/r/20200106185817.640331-2-krisman@collabora.com Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-01-15Fix built-in early-load Intel microcode alignmentJari Ruusu
Intel Software Developer's Manual, volume 3, chapter 9.11.6 says: "Note that the microcode update must be aligned on a 16-byte boundary and the size of the microcode update must be 1-KByte granular" When early-load Intel microcode is loaded from initramfs, userspace tool 'iucode_tool' has already 16-byte aligned those microcode bits in that initramfs image. Image that was created something like this: iucode_tool --write-earlyfw=FOO.cpio microcode-files... However, when early-load Intel microcode is loaded from built-in firmware BLOB using CONFIG_EXTRA_FIRMWARE= kernel config option, that 16-byte alignment is not guaranteed. Fix this by forcing all built-in firmware BLOBs to 16-byte alignment. [ If we end up having other firmware with much bigger alignment requirements, we might need to introduce some method for the firmware to specify it, this is the minimal "just increase the alignment a bit to account for this one special case" patch - Linus ] Signed-off-by: Jari Ruusu <jari.ruusu@gmail.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-01-14driver core: Print device when resources present in really_probe()Geert Uytterhoeven
If a device already has devres items attached before probing, a warning backtrace is printed. However, this backtrace does not reveal the offending device, leaving the user uninformed. Furthermore, using WARN_ON() causes systems with panic-on-warn to reboot. Fix this by replacing the WARN_ON() by a dev_crit() message. Abort probing the device, to prevent doing more damage to the device's resources. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20191206132219.28908-1-geert+renesas@glider.be Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-14driver core: Fix test_async_driver_probe if NUMA is disabledGuenter Roeck
Since commit 57ea974fb871 ("driver core: Rewrite test_async_driver_probe to cover serialization and NUMA affinity"), running the test with NUMA disabled results in warning messages similar to the following. test_async_driver test_async_driver.12: NUMA node mismatch -1 != 0 If CONFIG_NUMA=n, dev_to_node(dev) returns -1, and numa_node_id() returns 0. Both are widely used, so it appears risky to change return values. Augment the check with IS_ENABLED(CONFIG_NUMA) instead to fix the problem. Cc: Alexander Duyck <alexander.h.duyck@linux.intel.com> Fixes: 57ea974fb871 ("driver core: Rewrite test_async_driver_probe to cover serialization and NUMA affinity") Signed-off-by: Guenter Roeck <linux@roeck-us.net> Cc: stable <stable@vger.kernel.org> Acked-by: Alexander Duyck <alexander.h.duyck@linux.intel.com> Link: https://lore.kernel.org/r/20191127202453.28087-1-linux@roeck-us.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-14driver core: platform: Prevent resouce overflow from causing infinite loopsSimon Schwartz
num_resources in the platform_device struct is declared as a u32. The for loops that iterate over num_resources use an int as the counter, which can cause infinite loops on architectures with smaller ints. Change the loop counters to u32. Signed-off-by: Simon Schwartz <kern.simon@theschwartz.xyz> Link: https://lore.kernel.org/r/2201ce63a2a171ffd2ed14e867875316efcf71db.camel@theschwartz.xyz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>