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path: root/drivers/pci/proc.c
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2017-04-20PCI: Add BAR index argument to pci_mmap_page_range()David Woodhouse
In all cases we know which BAR it is. Passing it in means that arch code (or generic code; watch this space) won't have to go looking for it again. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2017-04-18PCI: Add arch_can_pci_mmap_io() on architectures which can mmap() I/O spaceDavid Woodhouse
This is relatively esoteric, and knowing that we don't have it makes life easier in some cases rather than just an eventual -EINVAL from pci_mmap_page_range(). Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2017-04-18PCI: Add arch_can_pci_mmap_wc() macroDavid Woodhouse
Most of the almost-identical versions of pci_mmap_page_range() silently ignore the 'write_combine' argument and give uncached mappings. Yet we allow the PCIIOC_WRITE_COMBINE ioctl in /proc/bus/pci, expose the 'resourceX_wc' file in sysfs, and allow an attempted mapping to apparently succeed. To fix this, introduce a macro arch_can_pci_mmap_wc() which indicates whether the platform can do a write-combining mapping. On x86 this ends up being pat_enabled(), while the few other platforms that support it can just set it to a literal '1'. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2017-04-18PCI: Only allow WC mmap on prefetchable resourcesDavid Woodhouse
The /proc/bus/pci mmap interface allows the user to specify whether they want WC or not. Don't let them do so on non-prefetchable BARs. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: stable@vger.kernel.org
2017-04-18PCI: Fix another sanity check bug in /proc/pci mmapDavid Woodhouse
Don't match MMIO maps with I/O BARs and vice versa. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: stable@vger.kernel.org
2016-12-24Replace <asm/uaccess.h> with <linux/uaccess.h> globallyLinus Torvalds
This was entirely automated, using the script by Al: PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>' sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \ $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h) to do the replacement at the end of the merge window. Requested-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-06-17PCI: Ignore write combining when mapping I/O port spaceBjorn Helgaas
PCI exposes files like /proc/bus/pci/00/00.0 in procfs. These files support operations like this: ioctl(fd, PCIIOC_MMAP_IS_IO); # request I/O port space ioctl(fd, PCIIOC_WRITE_COMBINE, 1); # request write-combining mmap(fd, ...) Write combining is useful on PCI memory space, but I don't think it makes sense on PCI I/O port space. We *could* change proc_bus_pci_ioctl() to make it impossible to set mmap_state == pci_mmap_io and write_combine at the same time, but that would break the following sequence, which is currently legal: mmap(fd, ...) # default is I/O, non-combining ioctl(fd, PCIIOC_WRITE_COMBINE, 1); # request write-combining ioctl(fd, PCIIOC_MMAP_IS_MEM); # request memory space mmap(fd, ...) # get write-combining mapping Ignore the write-combining flag when mapping I/O port space. This patch should have no functional effect, based on this analysis of all implementations of pci_mmap_page_range(): - ia64 mips parisc sh unicore32 x86 do not support mapping of I/O port space at all. - arm cris microblaze mn10300 sparc xtensa support mapping of I/O port space, but ignore the write_combine argument to pci_mmap_page_range(). - powerpc supports mapping of I/O port space and uses write_combine, and it disables write combining for I/O port space in __pci_mmap_set_pgprot(). This patch makes it possible to remove __pci_mmap_set_pgprot() from powerpc, which simplifies that path. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-06-10PCI: Whitespace cleanupRyan Desfosses
Fix various whitespace errors. No functional change. [bhelgaas: fix other similar problems] Signed-off-by: Ryan Desfosses <ryan@desfo.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2013-11-14PCI: Fix whitespace, capitalization, and spelling errorsBjorn Helgaas
Fix whitespace, capitalization, and spelling errors. No functional change. I know "busses" is not an error, but "buses" was more common, so I used it consistently. Signed-off-by: Marta Rybczynska <rybczynska@gmail.com> (pci_reset_bridge_secondary_bus()) Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-06-29pci/proc: switch to fixed_size_llseek()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-05-01proc: Supply a function to remove a proc entry by PDEDavid Howells
Supply a function (proc_remove()) to remove a proc entry (and any subtree rooted there) by proc_dir_entry pointer rather than by name and (optionally) root dir entry pointer. This allows us to eliminate all remaining pde->name accesses outside of procfs. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Grant Likely <grant.likely@linaro.or> cc: linux-acpi@vger.kernel.org cc: openipmi-developer@lists.sourceforge.net cc: devicetree-discuss@lists.ozlabs.org cc: linux-pci@vger.kernel.org cc: netdev@vger.kernel.org cc: netfilter-devel@vger.kernel.org cc: alsa-devel@alsa-project.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-05-01proc: Supply PDE attribute setting accessor functionsDavid Howells
Supply accessor functions to set attributes in proc_dir_entry structs. The following are supplied: proc_set_size() and proc_set_user(). Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> cc: linuxppc-dev@lists.ozlabs.org cc: linux-media@vger.kernel.org cc: netdev@vger.kernel.org cc: linux-wireless@vger.kernel.org cc: linux-pci@vger.kernel.org cc: netfilter-devel@vger.kernel.org cc: alsa-devel@alsa-project.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-04-09procfs: new helper - PDE_DATA(inode)Al Viro
The only part of proc_dir_entry the code outside of fs/proc really cares about is PDE(inode)->data. Provide a helper for that; static inline for now, eventually will be moved to fs/proc, along with the knowledge of struct proc_dir_entry layout. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-22new helper: file_inode(file)Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-05PCI/PM: Fix proc config reg access for D3cold and bridge suspendingHuang Ying
In https://bugzilla.kernel.org/show_bug.cgi?id=48981 Peter reported that /proc/bus/pci/??/??.? does not work for 3.6. This is because the device configuration space registers are not accessible if the corresponding parent bridge is suspended or the device is put into D3cold state. This is the same as /sys/bus/pci/devices/0000:??:??.?/config access issue. So the function used to solve sysfs issue is used to solve this issue. This patch moves pci_config_pm_runtime_get()/_put() from pci/pci-sysfs.c to pci/pci.c and makes them extern so they can be used by both the sysfs and proc paths. [bhelgaas: changelog, references, reporters] Reference: https://bugzilla.kernel.org/show_bug.cgi?id=48981 Reference: https://bugzilla.kernel.org/show_bug.cgi?id=49031 Reported-by: Forrest Loomis <cybercyst@gmail.com> Reported-by: Peter <lekensteyn@gmail.com> Reported-by: Micael Dias <kam1kaz3@gmail.com> Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> CC: stable@vger.kernel.org # v3.6+
2012-08-22PCI: Remove unused, commented-out, codeBjorn Helgaas
This removes unused code that was already commented out. Tested-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Yinghai Lu <yinghai@kernel.org>
2010-11-17BKL: remove extraneous #include <smp_lock.h>Arnd Bergmann
The big kernel lock has been removed from all these files at some point, leaving only the #include. Remove this too as a cleanup. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-11PCI: fix size checks for mmap() on /proc/bus/pci filesMartin Wilck
The checks for valid mmaps of PCI resources made through /proc/bus/pci files that were introduced in 9eff02e2042f96fb2aedd02e032eca1c5333d767 have several problems: 1. mmap() calls on /proc/bus/pci files are made with real file offsets > 0, whereas under /sys/bus/pci/devices, the start of the resource corresponds to offset 0. This may lead to false negatives in pci_mmap_fits(), which implicitly assumes the /sys/bus/pci/devices layout. 2. The loop in proc_bus_pci_mmap doesn't skip empty resouces. This leads to false positives, because pci_mmap_fits() doesn't treat empty resources correctly (the calculated size is 1 << (8*sizeof(resource_size_t)-PAGE_SHIFT) in this case!). 3. If a user maps resources with BAR > 0, pci_mmap_fits will emit bogus WARNINGS for the first resources that don't fit until the correct one is found. On many controllers the first 2-4 BARs are used, and the others are empty. In this case, an mmap attempt will first fail on the non-empty BARs (including the "right" BAR because of 1.) and emit bogus WARNINGS because of 3., and finally succeed on the first empty BAR because of 2. This is certainly not the intended behaviour. This patch addresses all 3 issues. Updated with an enum type for the additional parameter for pci_mmap_fits(). Cc: stable@kernel.org Signed-off-by: Martin Wilck <martin.wilck@ts.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-10-15PCI: kill BKL in /proc/pciArnd Bergmann
All operations in the pci procfs ioctl functions are atomic, so no lock is needed here. Also add a compat_ioctl method, since all the commands are compatible in 32 bit mode. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Tejun Heo <tj@kernel.org> Cc: linux-pci@vger.kernel.org Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-07-30PCI: use for_each_pci_dev()Kulikov Vasiliy
Use for_each_pci_dev() to simplify the code. Signed-off-by: Kulikov Vasiliy <segooon@gmail.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-07-30PCI: kernel oops on access to pci proc file while hot-removalKenji Kaneshige
I encountered the problem that /proc/bus/pci/XX/YY is not removed even after the corresponding device is hot-removed, if the file is still being opened. In addtion, accessing this file in this situation causes kernel panic (see below). Becasue the pci_proc_detach_device() doesn't call remove_proc_entry() if struct proc_dir_entry->count > 1, access to /proc/bus/pci/XX/YY would refer to struct pci_dev that was already freed. Though I don't know why the check for proc_dir_entry->count was added, I don't think it is needed. Removing this check fixes the problem. Steps to reproduce ------------------ # cd /sys/bus/pci/slots/2/ # PROC_BUS_PCI_FILE=/proc/bus/pci/`awk -F: '{print $2"/"$3}' < address`.0 # sleep 10000 < $PROC_BUS_PCI_FILE & # echo 0 > power # while true; do cat $PROC_BUS_PCI_FILE > /dev/null; done Oops Messages ------------- BUG: unable to handle kernel NULL pointer dereference at 00000042 IP: [<c05c82d5>] pci_user_read_config_dword+0x65/0xa0 *pdpt = 000000002185e001 *pde = 0000000476a79067 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:1c.0/0000:10:00.0/local_cpus Modules linked in: autofs4 sunrpc cpufreq_ondemand acpi_cpufreq ipv6 dm_mirror dm_region_hash dm_log dm_mod e1000e i2c_i801 i2c_core iTCO_wdt igb sg pcspkr dca iTCO_vendor_support ext4 mbcache jbd2 sd_mod crc_t10dif lpfc mptsas scsi_transport_fc mptscsih mptbase scsi_tgt scsi_transport_sas [last unloaded: microcode] Pid: 2997, comm: cat Not tainted 2.6.34-kk #32 SB/PRIMEQUEST 1800E EIP: 0060:[<c05c82d5>] EFLAGS: 00010046 CPU: 19 EIP is at pci_user_read_config_dword+0x65/0xa0 EAX: 00000002 EBX: e44f1800 ECX: e144df14 EDX: 155668c7 ESI: 00000087 EDI: 00000000 EBP: e144df40 ESP: e144df0c DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Process cat (pid: 2997, ti=e144c000 task=e26f2570 task.ti=e144c000) Stack: c09ceac0 c0570f72 ffffffff 08c57000 00000000 00001000 e44f1800 c05d2404 <0> e144df40 00001000 00000000 00001000 08c57000 3093ae50 e420cb40 e358d5c0 <0> c05d2300 fffffffb c054984f e144df9c 00008000 08c57000 e358d5c0 00008000 Call Trace: [<c0570f72>] ? security_capable+0x22/0x30 [<c05d2404>] ? proc_bus_pci_read+0x104/0x220 [<c05d2300>] ? proc_bus_pci_read+0x0/0x220 [<c054984f>] ? proc_reg_read+0x5f/0x90 [<c05497f0>] ? proc_reg_read+0x0/0x90 [<c050694d>] ? vfs_read+0x9d/0x190 [<c04958f4>] ? audit_syscall_entry+0x204/0x230 [<c0506a81>] ? sys_read+0x41/0x70 [<c0402f1f>] ? sysenter_do_call+0x12/0x28 Code: b4 26 00 00 00 00 b8 20 88 b1 c0 c7 44 24 08 ff ff ff ff e8 3e 52 22 00 f6 83 24 04 00 00 20 75 34 8b 43 08 8d 4c 24 08 8b 53 1c <8b> 70 40 89 4c 24 04 89 f9 c7 04 24 04 00 00 00 ff 16 89 c6 f0 EIP: [<c05c82d5>] pci_user_read_config_dword+0x65/0xa0 SS:ESP 0068:e144df0c CR2: 0000000000000042 Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo
implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2009-01-07PCI: define PCI resource names in an 'enum'Yu Zhao
This patch moves all definitions of the PCI resource names to an 'enum', and also replaces some hard-coded resource variables with symbol names. This change eases introduction of device specific resources. Reviewed-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-01-07PCI: check mmap range of /proc/bus/pci files tooJesse Barnes
/proc/bus/pci allows you to mmap resource ranges too, so we should probably be checking to make sure the mapping is somewhat valid. Uses the same code as the recent sysfs mmap range checking patch from Linus. Acked-by: David Miller <davem@davemloft.net> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-07-22PCI: fixup sparse endianness warnings in proc.cHarvey Harrison
drivers/pci/proc.c:91:3: warning: cast from restricted __le16 drivers/pci/proc.c:100:3: warning: cast from restricted __le32 drivers/pci/proc.c:109:3: warning: cast from restricted __le16 drivers/pci/proc.c:161:40: warning: cast to restricted __le16 drivers/pci/proc.c:170:41: warning: cast to restricted __le32 drivers/pci/proc.c:179:40: warning: cast to restricted __le16 Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10PCI: remove CVS keywordsAdrian Bunk
This patch removes CVS keywords that weren't updated for a long time from comments. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-10PCI: Replace deprecated __initcall with device_initcall.Robert P. J. Day
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-04-29drivers: use non-racy method for proc entries creation (2)Denis V. Lunev
Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data be setup before gluing PDE to main tree. Signed-off-by: Denis V. Lunev <den@openvz.org> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Peter Osterlund <petero2@telia.com> Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Dmitry Torokhov <dtor@mail.ru> Cc: Neil Brown <neilb@suse.de> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29proc: remove proc_busAlexey Dobriyan
Remove proc_bus export and variable itself. Using pathnames works fine and is slightly more understandable and greppable. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-21PCI: Fix wrong reference counter check for proc_dir_entryKenji Kaneshige
Fix wrong counter check for proc_dir_entry in pci_proc_detach_device(). The pci_proc_detach_device() returns with -EBUSY before calling remove_proc_entry() if the reference counter of proc_dir_entry is not 0. But this check is wrong and pci_proc_detach_device() always fails because the reference counter of proc_dir_entry is initialized with 1 at creating time and decremented in remove_proc_entry(). This bug cause strange behaviour as followings: - Accessing /proc/bus/pci/XXXX/YY file after hot-removing pci adapter card causes kernel panic. - Repeating hot-add/hot-remove of pci adapter card increases files with the same name under /proc/bus/pci/XXXX/ directory. For example: # pwd /proc/bus/pci/0002:09 # ls 01.0 # for i in `seq 5` > do > echo 0 > /sys/bus/pci/slots/0009_0032/power > echo 1 > /sys/bus/pci/slots/0009_0032/power > done # ls 01.0 01.0 01.0 01.0 01.0 01.0 The pci_proc_detach_device() should check if the reference counter is not larger than 1 instead. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-01PCI: constify function pointer tablesJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-01PCI: Convert drivers/pci/proc.c to use unlocked_ioctlMathieu Segaud
Change access to inode thru file->f_dentry->d_inode, and add explicit lock/unlock_kernel() calls. Signed-off-by: Mathieu Segaud <mathieu.segaud@regala.cx> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-01PCI: drivers/pci/: remove unused exportsAdrian Bunk
This patch removes the following unused exports: - remove the following unused EXPORT_SYMBOL's: - pci-acpi.c: pci_osc_support_set - proc.c: pci_proc_detach_bus - remove the following unused EXPORT_SYMBOL_GPL's: - bus.c: pci_walk_bus - probe.c: pci_create_bus - setup-res.c: pci_claim_resource Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12pci: write file size to inode on proc bus file writeDavid Rientjes
When a /proc/bus/pci file is written to, the size of that PCI device's configuration space must be written to the inode. Otherwise, it is possible for the file to specify a size of 0 on stat if a task is holding the same file open. Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12pci: use size stored in proc_dir_entry for proc bus filesDavid Rientjes
On pci_proc_attach_device(), the size of the PCI configuration space is stored in the proc_dir_entry as the size of the file. Thus, the procfs interface to PCI devices should use it instead of the device directly. Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-07-16Remove capability.h from mm.hAlexey Dobriyan
I forgot to remove capability.h from mm.h while removing sched.h! This patch remedies that, because the only inline function which was using CAP_something was made out of line. Cross-compile tested without regressions on: all powerpc defconfigs all mips defconfigs all m68k defconfigs all arm defconfigs all ia64 defconfigs alpha alpha-allnoconfig alpha-defconfig alpha-up arm i386 i386-allnoconfig i386-defconfig i386-up ia64 ia64-allnoconfig ia64-defconfig ia64-up m68k mips parisc parisc-allnoconfig parisc-defconfig parisc-up powerpc powerpc-up s390 s390-allnoconfig s390-defconfig s390-up sparc sparc-allnoconfig sparc-defconfig sparc-up sparc64 sparc64-allnoconfig sparc64-defconfig sparc64-up um-x86_64 x86_64 x86_64-allnoconfig x86_64-defconfig x86_64-up as well as my two usual configs. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-11PCI: unexport pci_proc_attach_deviceAdrian Bunk
On Mon, Apr 02, 2007 at 10:47:45PM -0700, Andrew Morton wrote: >... > Changes since 2.6.21-rc5-mm3: >... > +fix-82875-pci-setup.patch >... > Misc >... pci_proc_attach_device() no longer has any modular user. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-08header cleaning: don't include smp_lock.h when not usedRandy Dunlap
Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] mark struct file_operations const 5Arjan van de Ven
Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2006-12-08[PATCH] struct path: convert pciJosef Sipek
Signed-off-by: Josef Sipek <jsipek@fsl.cs.sunysb.edu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-27[PATCH] 64bit resource: change pci core and arch code to use resource_size_tGreg Kroah-Hartman
Based on a patch series originally from Vivek Goyal <vgoyal@in.ibm.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-27[PATCH] 64bit resource: fix up printks for resources in pci core and hotplug ↵Greg Kroah-Hartman
drivers This is needed if we wish to change the size of the resource structures. Based on an original patch from Vivek Goyal <vgoyal@in.ibm.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-23[PATCH] PCI: the scheduled removal of PCI_LEGACY_PROCAdrian Bunk
This patch contains the scheduled removal of PCI_LEGACY_PROC. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-09Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6Linus Torvalds
2006-01-09[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_semJes Sorensen
This patch converts the inode semaphore to a mutex. I have tested it on XFS and compiled as much as one can consider on an ia64. Anyway your luck with it might be different. Modified-by: Ingo Molnar <mingo@elte.hu> (finished the conversion) Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2006-01-09[PATCH] PCI: drivers/pci: some cleanupsAdrian Bunk
This patch contains the following cleanups: - hotplug/pciehp_core.c: make the needlessly global hpdriver_context static - #if 0 the following unused functions: - pci.c: pci_bus_max_busnr() - pci.c: pci_max_busnr() - proc.c: pci_proc_attach_bus() - remove.c: pci_remove_device_safe Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] PCI: Block config access during BISTBrian King
Some PCI adapters (eg. ipr scsi adapters) have an exposure today in that they issue BIST to the adapter to reset the card. If, during the time it takes to complete BIST, userspace attempts to access PCI config space, the host bus bridge will master abort the access since the ipr adapter does not respond on the PCI bus for a brief period of time when running BIST. On PPC64 hardware, this master abort results in the host PCI bridge isolating that PCI device from the rest of the system, making the device unusable until Linux is rebooted. This patch is an attempt to close that exposure by introducing some blocking code in the PCI code. When blocked, writes will be humored and reads will return the cached value. Ben Herrenschmidt has also mentioned that he plans to use this in PPC power management. Signed-off-by: Brian King <brking@us.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> drivers/pci/access.c | 89 ++++++++++++++++++++++++++++++++++++++++++++++++ drivers/pci/pci-sysfs.c | 20 +++++----- drivers/pci/pci.h | 7 +++ drivers/pci/proc.c | 28 +++++++-------- drivers/pci/syscall.c | 14 +++---- include/linux/pci.h | 7 +++ 6 files changed, 134 insertions(+), 31 deletions(-)
2005-09-08[PATCH] PCI: remove CONFIG_PCI_NAMESAdrian Bunk
This patch removes CONFIG_PCI_NAMES. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-27[PATCH] PCI: fix-pci-mmap-on-ppc-and-ppc64.patchMichael Ellerman
This is an updated version of Ben's fix-pci-mmap-on-ppc-and-ppc64.patch which is in 2.6.12-rc4-mm1. It fixes the patch to work on PPC iSeries, removes some debug printks at Ben's request, and incorporates your fix-pci-mmap-on-ppc-and-ppc64-fix.patch also. Originally from Benjamin Herrenschmidt <benh@kernel.crashing.org> This patch was discussed at length on linux-pci and so far, the last iteration of it didn't raise any comment. It's effect is a nop on architecture that don't define the new pci_resource_to_user() callback anyway. It allows architecture like ppc who put weird things inside of PCI resource structures to convert to some different value for user visible ones. It also fixes mmap'ing of IO space on those archs. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-03[PATCH] PCI: Clean up a lot of sparse "Should it be static?" warnings.Greg KH
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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