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2010-05-12e1000e: cleanup multiple common exit pointsBruce Allan
...in e1000_update_nvm_checksum_ich8lan(). Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12e1000e: s/w initiated LSC MSI-X interrupts not generated; no transmitBruce Allan
In MSI-X mode when an IMPI SoL session was active (i.e. the PHY reset was blocked), the LSC interrupt generated by s/w to start the watchdog which started the transmitter was not getting fired by the hardware because bit 24 (the 'other' cause bit) also needed to be set. Without an active SoL session, the PHY was reset which caused the h/w to fire the LSC interrupt. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12e1000e: initialize manageability (IPMI) pass-through in 82574/82583Bruce Allan
82574/82583 uses different registers/bits to setup manageability filters than all other parts supported by e1000e; set them accordingly for IPMI pass-through. Rename the function to better reflect what it does. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12e1000e: bad state after running ethtool diagnostics with AMT enabledBruce Allan
When running ethtool online diagnostics with no open interface, there is a short period of time where the driver relinquishes control of the adapter during which time AMT (manageability firmware) can put the adapter into an unknown state resulting in such things as link test failure, hardware hang, reporting an incorrect link speed, etc. Resetting the adapter during an open() resolves this by putting the adapter into a quiescent state. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12e1000e: use static params to save stack space (part 2)Bruce Allan
A couple stack cleanups missed in an earlier patch from Jesse. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Cc: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/kaber/ipmr-2.6
2010-05-12netxen: handle queue manager accessAmit Kumar Salecha
Check the access by tools for hardware queue engine and handle it separately than other block registers, otherwise incorrect data is returned. Support for only NX3031 based cards. Acked-by: Dhananjay Phadke <dhananjay.phadke@qlogic.com> Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12netxen: to fix onchip memory access.Sucheta Chakraborty
Remove unnecessary remap of the region in bar 0 to access onhip memory for NX3031. Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com> Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12netxen: remove unnecessary size checksSucheta Chakraborty
NX3031 have 64bit on card memory. Fix the limit check to 64MB and remove unnecessary 128bit read/write check. Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com> Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12netxen: fix register usageAmit Kumar Salecha
o For NX3031, MSI_MODE, CAPABILITIES_FW and SCRATCHPAD registers are obsolete. These register addresses can be used for different purpose. Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12tipc: Reduce footprint by un-inlining tipc_msg_* routinesAllan Stephens
Convert tipc_msg_* inline routines that are more than one line into standard functions, thereby eliminating some repeated code. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12tipc: Reduce footprint by un-inlining buf_acquire routineAllan Stephens
Convert buf_acquire inline routine that is more than one line into a standard function, thereby eliminating some repeated code. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12tipc: Reduce footprint by un-inlining bearer congestion routineAllan Stephens
Convert bearer congestion inline routine that is more than one line into a standard function, thereby eliminating some repeated code. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12tipc: Reduce footprint by un-inlining port list routinesAllan Stephens
Converts port list inline routines that are more than one line into standard functions, thereby eliminating a significant amount of repeated code. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12tipc: Reduce footprint by un-inlining nmap routinesAllan Stephens
Converts nmap inline routines that are more than one line into standard functions, thereby eliminating a significant amount of repeated code. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12tipc: Reduce footprint by un-inlining address routinesAllan Stephens
Convert address-related inline routines that are more than one line into standard functions, thereby eliminating a significant amount of repeated code. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12tipc: add tipc_ prefix to fcns targeted for un-inliningAllan Stephens
These functions have enough code in them such that they seem like sensible targets for un-inlining. Prior to doing that, this adds the tipc_ prefix to the functions, so that in the event of a panic dump or similar, the subsystem from which the functions come from is immediately clear. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12tipc: Relocate trivial link status functions to header fileAllan Stephens
Rather than live in link.c where they can only be used in that file alone, these helper routines are better served by being in link.h Relocated are the following: link_working_working link_working_unknown link_reset_unknown link_reset_reset link_blocked link_congested Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12tipc: remove abstraction for link_max_pktAllan Stephens
This is just a straight return of a field; there is no value in the abstraction of hiding it behind a function. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12tipc: Update commenting in TIPC APIAllan Stephens
Eliminate comments in TIPC's main API files that are either obsolete, incorrect, misleading, or unhelpful. It also adds in one new comment. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12tipc: Add support for "-s" configuration optionAllan Stephens
Provide initial support for displaying overall TIPC status/statistics information at runtime. Currently, only version info for the TIPC kernel module is displayed. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12tipc: Rename "multicast-link" to "broadcast-link"Allan Stephens
Make a cosmetic change to the name displayed for the broadcast link, to better reflect its true nature. Since TIPC utilizes this link to distribute name table information, in addition to multicast messages sent by user applications, the prior name "multicast-link" is no longer appropriate. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12tipc: Eliminate unnecessary initialization in native API send routinesAllan Stephens
Eliminate a couple of instances where TIPC's native API send routines were doing pointless initialization of local variables. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12tipc: Prune unused data structures from configuration serviceAllan Stephens
Eliminate some unused data structures in the TIPC configuration service that relate to the handling of link subscriptions, which were not supported when TIPC 1.5 was introduced. If and when support for link subscriptions is offered in TIPC, these elements may need to be re-introduced. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12tipc: Eliminate unused argument in print statementAllan Stephens
Eliminate an argument in a print statement that has no corresponding format specification. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12tipc: Eliminate obsolete port's "congested_link" fieldAllan Stephens
Eliminate a field of the TIPC port structure that is populated, but never referenced. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12netfilter: xtables: add missing depends for xt_TEEJan Engelhardt
Aviod these link-time errors when IPV6=m, XT_TEE=y: net/built-in.o: In function `tee_tg_route6': xt_TEE.c:(.text+0x45ca5): undefined reference to `ip6_route_output' net/built-in.o: In function `tee_tg6': xt_TEE.c:(.text+0x45d79): undefined reference to `ip6_local_out' Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-12Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: Documentation/feature-removal-schedule.txt drivers/net/wireless/ath/ar9170/usb.c drivers/scsi/iscsi_tcp.c net/ipv4/ipmr.c
2010-05-11Merge branch 'hwmon-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: hwmon: (applesmc) Correct sysfs fan error handling hwmon: (asc7621) Bug fixes
2010-05-11Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: kprobes/x86: Fix removed int3 checking order perf: Fix static strings treated like dynamic ones
2010-05-11drivers/gpu/drm/i915/i915_irq.c:i915_error_object_create(): use correct ↵Andrew Morton
kmap-atomic slot i915_error_object_create() is called from the timer interrupt and hence can corrupt the KM_USER0 slot. Use KM_IRQ0 instead. Reported-by: Jaswinder Singh Rajput <jaswinderlinux@gmail.com> Tested-by: Jaswinder Singh Rajput <jaswinderlinux@gmail.com> Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Dave Airlie <airlied@linux.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11hp_accel: fix race in device removalOliver Neukum
The work queue has to be flushed after the device has been made inaccessible. The patch closes a window during which a work queue might remain active after the device is removed and would then lead to ACPI calls with undefined behavior. Signed-off-by: Oliver Neukum <oneukum@suse.de> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Pavel Herrmann <morpheus.ibis@gmail.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11mqueue: fix kernel BUG caused by double free() on mq_open()André Goddard Rosa
In case of aborting because we reach the maximum amount of memory which can be allocated to message queues per user (RLIMIT_MSGQUEUE), we would try to free the message area twice when bailing out: first by the error handling code itself, and then later when cleaning up the inode through delete_inode(). Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11fbdev: bfin-t350mcqb-fb: fix fbmem allocation with blanking linesMichael Hennerich
The current allocation does not include the memory required for blanking lines. So avoid memory corruption when multiple devices are using the DMA memory near each other. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11memcg: fix css_is_ancestor() RCU lockingKAMEZAWA Hiroyuki
Some callers (in memcontrol.c) calls css_is_ancestor() without rcu_read_lock. Because css_is_ancestor() has to access RCU protected data, it should be under rcu_read_lock(). This makes css_is_ancestor() itself does safe access to RCU protected area. (At least, "root" can have refcnt==0 if it's not an ancestor of "child". So, we need rcu_read_lock().) Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11memcg: fix css_id() RCU locking for realKAMEZAWA Hiroyuki
Commit ad4ba375373937817404fd92239ef4cadbded23b ("memcg: css_id() must be called under rcu_read_lock()") modifies memcontol.c for fixing RCU check message. But Andrew Morton pointed out that the fix doesn't seems sane and it was just for hidining lockdep messages. This is a patch for do proper things. Checking again, all places, accessing without rcu_read_lock, that commit fixies was intentional.... all callers of css_id() has reference count on it. So, it's not necessary to be under rcu_read_lock(). Considering again, we can use rcu_dereference_check for css_id(). We know css->id is valid if css->refcnt > 0. (css->id never changes and freed after css->refcnt going to be 0.) This patch makes use of rcu_dereference_check() in css_id/depth and remove unnecessary rcu-read-lock added by the commit. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11bsdacct: use del_timer_sync() in acct_exit_ns()Vitaliy Gusev
acct_exit_ns --> acct_file_reopen deletes timer without check timer execution on other CPUs. So acct_timeout() can change an unmapped memory. Signed-off-by: Vitaliy Gusev <vgusev@openvz.org> Cc: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11rmap: remove anon_vma check in page_address_in_vma()Naoya Horiguchi
Currently page_address_in_vma() compares vma->anon_vma and page_anon_vma(page) for parameter check, but in 2.6.34 a vma can have multiple anon_vmas with anon_vma_chain, so current check does not work. (For anonymous page shared by multiple processes, some verified (page,vma) pairs return -EFAULT wrongly.) We can go to checking all anon_vmas in the "same_vma" chain, but it needs to meet lock requirement. Instead, we can remove anon_vma check safely because page_address_in_vma() assumes that page and vma are already checked to belong to the identical process. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Reviewed-by: Rik van Riel <riel@redhat.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11hugetlbfs: kill applications that use MAP_NORESERVE with SIGBUS instead of ↵Mel Gorman
OOM-killer Ordinarily, application using hugetlbfs will create mappings with reserves. For shared mappings, these pages are reserved before mmap() returns success and for private mappings, the caller process is guaranteed and a child process that cannot get the pages gets killed with sigbus. An application that uses MAP_NORESERVE gets no reservations and mmap() will always succeed at the risk the page will not be available at fault time. This might be used for example on very large sparse mappings where the developer is confident the necessary huge pages exist to satisfy all faults even though the whole mapping cannot be backed by huge pages. Unfortunately, if an allocation does fail, VM_FAULT_OOM is returned to the fault handler which proceeds to trigger the OOM-killer. This is unhelpful. Even without hugetlbfs mounted, a user using mmap() can trivially trigger the OOM-killer because VM_FAULT_OOM is returned (will provide example program if desired - it's a whopping 24 lines long). It could be considered a DOS available to an unprivileged user. This patch alters hugetlbfs to kill a process that uses MAP_NORESERVE where huge pages were not available with SIGBUS instead of triggering the OOM killer. This change affects hugetlb_cow() as well. I feel there is a failure case in there, but I didn't create one. It would need a fairly specific target in terms of the faulting application and the hugepage pool size. The hugetlb_no_page() path is much easier to hit but both might as well be closed. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: David Rientjes <rientjes@google.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11kexec: fix OOPS in crash_kernel_shrinkVitaly Mayatskikh
Two "echo 0 > /sys/kernel/kexec_crash_size" OOPSes kernel. Also content of this file is invalid after first shrink to zero: it shows 1 instead of 0. This scenario is unlikely to happen often (root privs, valid crashkernel= in cmdline, dump-capture kernel not loaded), I hit it only by chance. This patch fixes it. Signed-off-by: Vitaly Mayatskikh <v.mayatskih@gmail.com> Cc: Cong Wang <amwang@redhat.com> Cc: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11mmc: atmel-mci: fix in debugfs: response value printingNicolas Ferre
In debugfs, printing of command response reports resp[2] twice: fix it to resp[3]. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11mmc: atmel-mci: remove data error interrupt after xferNicolas Ferre
Disable data error interrupts while we are actually recording that there is not such errors. This will prevent, in some cases, the warning message printed at new request queuing (in atmci_start_request()). Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: <linux-mmc@vger.kernel.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11mmc: atmel-mci: prevent kernel oops while removing cardNicolas Ferre
The removing of an SD card in certain circumstances can lead to a kernel oops if we do not make sure that the "data" field of the host structure is valid. This patch adds a test in atmci_dma_cleanup() function and also calls atmci_stop_dma() before throwing away the reference to data. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: <linux-mmc@vger.kernel.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11mmc: atmel-mci: fix two parameters swappedNicolas Ferre
Two parameters were swapped in the calls to atmci_init_slot(). Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Reported-by: Anders Grahn <anders.grahn@hd-wireless.se> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: <linux-mmc@vger.kernel.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11revert "procfs: provide stack information for threads" and its fixup commitsRobin Holt
Originally, commit d899bf7b ("procfs: provide stack information for threads") attempted to introduce a new feature for showing where the threadstack was located and how many pages are being utilized by the stack. Commit c44972f1 ("procfs: disable per-task stack usage on NOMMU") was applied to fix the NO_MMU case. Commit 89240ba0 ("x86, fs: Fix x86 procfs stack information for threads on 64-bit") was applied to fix a bug in ia32 executables being loaded. Commit 9ebd4eba7 ("procfs: fix /proc/<pid>/stat stack pointer for kernel threads") was applied to fix a bug which had kernel threads printing a userland stack address. Commit 1306d603f ('proc: partially revert "procfs: provide stack information for threads"') was then applied to revert the stack pages being used to solve a significant performance regression. This patch nearly undoes the effect of all these patches. The reason for reverting these is it provides an unusable value in field 28. For x86_64, a fork will result in the task->stack_start value being updated to the current user top of stack and not the stack start address. This unpredictability of the stack_start value makes it worthless. That includes the intended use of showing how much stack space a thread has. Other architectures will get different values. As an example, ia64 gets 0. The do_fork() and copy_process() functions appear to treat the stack_start and stack_size parameters as architecture specific. I only partially reverted c44972f1 ("procfs: disable per-task stack usage on NOMMU") . If I had completely reverted it, I would have had to change mm/Makefile only build pagewalk.o when CONFIG_PROC_PAGE_MONITOR is configured. Since I could not test the builds without significant effort, I decided to not change mm/Makefile. I only partially reverted 89240ba0 ("x86, fs: Fix x86 procfs stack information for threads on 64-bit") . I left the KSTK_ESP() change in place as that seemed worthwhile. Signed-off-by: Robin Holt <holt@sgi.com> Cc: Stefani Seibold <stefani@seibold.net> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Ingo Molnar <mingo@elte.hu> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11it8761e_gpio: fix bug in gpio numberingDenis Turischev
The SIO chip contains 16 possible gpio lines, not 14. The schematic was not read carefully. Signed-off-by: Denis Turischev <denis@compulab.co.il> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11dma-mapping: fix dma_sync_single_range_*FUJITA Tomonori
dma_sync_single_range_for_cpu() and dma_sync_single_range_for_device() use a wrong address with a partial synchronization. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-11ar9170: fix for driver-core ABI changeStephen Rothwell
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-05-11Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem Conflicts: drivers/net/wireless/ath/ar9170/main.c
2010-05-11Merge branch 'drm-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/radeon: Fix 3 regressions - since buffer rework
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