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2007-09-06m32r: Rename STI/CLI macrosHirokazu Takata
The names of STI and CLI macros were derived from i386 arch historically, but their name are incomprehensible. So, for easy to understand, rename these macros to ENABLE_INTERRUPTS and DISABLE_INTERRUPTS, respectively. Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2007-09-06m32r: build fix of entry.SHirokazu Takata
This patch fixes the following compile error: <-- snip --> ... AS arch/m32r/kernel/entry.o /home/bunk/linux/kernel-2.6/linux-2.6.23-rc3-mm1/arch/m32r/kernel/entry.S: Assembler messages: /home/bunk/linux/kernel-2.6/linux-2.6.23-rc3-mm1/arch/m32r/kernel/entry.S:358: Error: bad instruction `addi r0,#(((((0)+(64))+(32))+(32)))' make[2]: *** [arch/m32r/kernel/entry.o] Error 1 <-- snip --> Signed-off-by: Hirokazu Takata <takata@linux-m32r.org> Cc: Adrian Bunk <bunk@kernel.org>
2007-09-03m32r: Separate syscall table from entry.SHirokazu Takata
- Separate sys_call_table from arch/m32r/kernel/entry.S and move it to arch/m32r/kernel/system_call.S. - Change sys_call_table section from .data to .rodata. Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2007-09-03m32r: Cosmetic updates of arch/m32r/kernel/entry.SHirokazu Takata
- Remove unused symbols *_MASK - Change indentation of comments, etc. Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2007-09-03m32r: Exit ei_handler directly for no IRQ case or IPI operationsHirokazu Takata
If no IRQ request is found in the IRQ check of ei_handler, we can exit directly by jumping "restore_all", instead of via "ret_from_intr". This modification is also likely effective for IPI operations, because scheduler call never happen at the exit of IPIs. Signed-off-by: Hitoshi Yamamoto <hitoshiy@linux-m32r.org> Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2007-09-03m32r: Simplify ei_handler codeHirokazu Takata
Simplify and clean up messy ei_handler code in arch/m32r/kernel/entry.S. - Remove ifdef's for CONFIG_CHIP_* configulations. - Rearrange the M32700 workaround code. - Remove the messy platform-dependent interrupt check routines and consolidate them to common INT0/INT1/INT2 check routines for all platforms with cascaded interrupt controllers. Signed-off-by: Hitoshi Yamamoto <hitoshiy@linux-m32r.org> Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2007-09-03m32r: Define symbols to unify platform-dependent ICU checksHirokazu Takata
On some m32r platforms, cascaded ICUs are used. This patch is required to simplify ei_handler and consolidate platform- dependent ICU check routines. platform ICU/INT1 ICU/INT0 ICU/INT2 -------------- -------- -------- -------- m32104ut o - - m32700ut o o o opsput o o o usrv o - - (others) - - - Signed-off-by: Hitoshi Yamamoto <hitoshiy@linux-m32r.org> Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2007-09-03m32r: Move dot.gdbinit filesHirokazu Takata
Move dot.gdbinit files from arch/m32r/{platforms}/dot.gdbinit* to arch/m32r/platforms/{platform}/. Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2007-09-03m32r: Rearrange platform-dependent codesHirokazu Takata
Rearrange platform-dependent codes from arch/m32r/kernel/*.c to arch/m32r/platforms/{platform}/. Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2007-09-03m32r: Add defconfig file for the usrv platform.Hirokazu Takata
Add usrv_defcofig file for the usrv (M32R MicroServer) platform. platform defconfig Note ---------- ---------------------- --------------------------- usrv usrv_defconfig SMP Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2007-09-03m32r: Update defconfig files for 2.6.23-rc1Hirokazu Takata
Update defconfig files for 2.6.23-rc1 in arch/m32r/configs/. Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2007-09-03m32r: Move defconfig files to arch/m32r/configs/Hirokazu Takata
Change defconfig file's location from arch/m32r/{platform}/defconfig* to arch/m32r/configs/{platform}_defconfig. Applying this patch, we can use defconfig file for each m32r platform easily, like other architectures. ex. Setup defconfig for cross-building $ make ARCH=m32r CROSS_COMPILE=m32r-linux-gnu- {platform}_defconfig. platform defconfig Note ---------- ---------------------- --------------------------- m32104ut m32104ut_defconfig MMU-less m32700ut m32700ut.smp_defconfig SMP m32700ut m32700ut.up_defconfig UP mappi mappi.smp_defconfig SMP mappi mappi.up_defconfig UP mappi mappi.nommu_defconfig MMU-less mappi2 mappi2.opsp_defconfig FPGA env. (CPU Core: OPSP) mappi2 mappi2.vdec2_defconfig FPGA env. (CPU Core: VDEC2) mappi3 imappi3.smp_defconfig SMP oaks32r oaks32r_defconfig MMU-less opsput opsput_defconfig UP Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
2007-08-31Linux 2.6.23-rc5Linus Torvalds
2007-08-31Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-x86setup * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-x86setup: [x86 setup] Don't rely on the VESA BIOS being register-clean
2007-08-31Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/ehca: SRQ fixes to enable IPoIB CM IB/ehca: Fix Small QP regressions
2007-08-31NFS: Fix the mount regressionTrond Myklebust
This avoids the recent NFS mount regression (returning EBUSY when mounting the same filesystem twice with different parameters). The best I can do given the constraints appears to be to have the kernel first look for a superblock that matches both the fsid and the user-specified mount options, and then spawn off a new superblock if that search fails. Note that this is not the same as specifying nosharecache everywhere since nosharecache will never attempt to match an existing superblock. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Tested-by: Hua Zhong <hzhong@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31x86: be even more careful about checking the stack frame on dumpingLinus Torvalds
lguest didn't initialize the kernel stack the way a real i386 kernel does, and ended up triggering a corner-case in the stack frame checking that doesn't happen on naive i386, and that the stack dumping didn't handle quite right. This makes the frame handling more correct, and tries to clarify the code at the same time so that it's a bit more obvious what is going on. Thanks to Rusty Russell for debugging the lguest failure- Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31Do not use the ia64 clocksource on non-ia64 architecturesLinus Torvalds
The HPET clocksource in drivers/char/hpet.c was written as generic code for ia64, but it is not yet ready to replace the native HPET clocksource implementations that the i386/x86-64 architectures use. On x86[-64], trying to register this clocksource results in potentially multiple hpet-based clocksources being registered, and if the ia64 one is chosen on x86_64 some users have experienced hangs. Eventually all three architectures may end up using the same code, but that is not the case right now. Cc: John Stultz <johnstul@us.ibm.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Paolo Ornati <ornati@fastwebnet.it> Cc: Bob Picco <bob.picco@hp.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31Merge branch 'upstream-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: - cxgb3 engine microcode load cxgb3 - Fix dev->priv usage qeth: Drop ARP packages on HiperSockets interface with NOARP attribute. qeth: provide specific message for OSA-adapters exclusively used qeth: crash during reboot after failing online setting qeth: Announce tx checksumming for qeth devices in TSO/EDDP mode qeth: dont return the return values of void functions. qeth: enforce a rate limit for inbound scatter gather messages qeth: ungrouping a device must not be interruptible netxen: fix crashes during module unload netxen: Avoid firmware load in PCI probe PS3: fix the bug that 'ifconfig down' would hang IOC3: Program UART predividers.
2007-08-31IB/ehca: SRQ fixes to enable IPoIB CMJoachim Fenkes
Fix ehca SRQ support so that IPoIB connected mode works: - Report max_srq > 0 if SRQ is supported - Report "last wqe reached" asynchronous event when base QP dies; this is required by the IB spec and IPoIB CM relies on receiving it when cleaning up. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-31IB/ehca: Fix Small QP regressionsStefan Roscher
The new Small QP code had a few bugs that would also make it trigger for non-Small QPs. Fix them. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-31[x86 setup] Don't rely on the VESA BIOS being register-cleanH. Peter Anvin
The VESA BIOS is specified to be register-clean. However, we have now found at least one system which violates that. Thus, be as paranoid about VESA calls as about everything else. Huge thanks to Will Simoneau for reporting, diagnosing, and testing this out on Dell Inspiron 5150. Cc: Will Simoneau <simoneau@ele.uri.edu> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2007-08-31Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-schedLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched: sched: clean up task_new_fair() sched: small schedstat fix sched: fix wait_start_fair condition in update_stats_wait_end() sched: call update_curr() in task_tick_fair() sched: make the scheduler converge to the ideal latency sched: fix sleeper bonus limit
2007-08-31Merge branch 'upstream-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: [libata] Bump driver versions ata_piix: implement IOCFG bit18 quirk libata: implement BROKEN_HPA horkage and apply it to affected drives sata_promise: FastTrack TX4200 is a second-generation chip pata_marvell: Add more identifiers ata_piix: add Satellite U200 to broken suspend list ata: add ATA_MWDMA* and ATA_SWDMA* defines ata_piix: IDE mode SATA patch for Intel Tolapai libata-core: Allow translation setting to fail
2007-08-31- cxgb3 engine microcode loadDivy Le Ray
Load the engine microcode when an interface is brought up, instead of of doing it when the module is loaded. Loosen up tight binding between the driver and the engine microcode version. There is no need for microcode update with T3A boards. Fix the file naming. Do a better job at logging the loading activity. Signed-off-by: Divy Le Ray <divy@chelsio.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31cxgb3 - Fix dev->priv usageDivy Le Ray
cxgb3 used netdev_priv() and dev->priv for different purposes. In 2.6.23, netdev_priv() == dev->priv, cxgb3 needs a fix. This patch is a partial backport of Dave Miller's changes in the net-2.6.24 git branch. Without this fix, cxgb3 crashes on 2.6.23. Signed-off-by: Divy Le Ray <divy@chelsio.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31qeth: Drop ARP packages on HiperSockets interface with NOARP attribute.Klaus D. Wacker
A network interface can get ARP packets even when the interface has NOARP specified. In a HiperSockets environment this disturbs receiving systems when packets are sent on the multicast queue. (E.g. TCP/IP on z/VM issues messages reporting invalid data on the HiperSockets interface.) Qeth will no longer send ARP packets on HiperSockets interface when interface has the NOARP attribute. Signed-off-by: Klaus D. Wacker <kdwacker@de.ibm.com> Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31qeth: provide specific message for OSA-adapters exclusively usedUrsula Braun
Exclusive usage of OSA-cards has been introduced. Even though Linux does not make use of it, qeth should be prepared to receive a bad RC for some initialization steps. A meaningful message is now given, if an OSA-device is set online, even though the OSA-adapter is already exclusively used by another host. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31qeth: crash during reboot after failing online settingUrsula Braun
Online setting of a qeth device may fail for instance because of: - out-of-memory condition when allocating qdio queues - IDX ACTIVATE problem - ... Such a device is still returned in a driver_for_each_device loop processed in qeth_reboot_event(), which calls qeth_clear_qdio_buffers(). Make sure qeth_clear_output_buffer() is called only, if the qdio queues have been successfully allocated during initialization of a qeth device. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31qeth: Announce tx checksumming for qeth devices in TSO/EDDP modeFrank Blaschka
TSO requires tx checksumming. For non GSO frames in TSO/EDDP mode we have to manually calculate the checksum. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31qeth: dont return the return values of void functions.Heiko Carstens
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31qeth: enforce a rate limit for inbound scatter gather messagesFrank Blaschka
under memory pressure scatter gather mode switching messages must be rate limited. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31qeth: ungrouping a device must not be interruptibleUrsula Braun
Problem: A recovery thread must not be active when device is removed. In qeth_remove_device() an interruptible wait operation is used to wait until a qeth recovery thread is finished. If a user really interrupts the ungroup operation of a qeth device while a recovery is running, cio and qeth are out of sync (device already removed from cio, but kept in qeth). A following module unload of qeth results in a kernel OOPS here. Solution: Do not allow interruption of ungroup operation to guarantee finishing of a potentially running qeth recovery thread. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31netxen: fix crashes during module unloaddhananjay@netxen.com
This patch fixes two problems during driver unload. The pci_disable_device() call is before firmware reload, causing reads and writes across PCI bus after disabling device. Second problem is the register window was wrong during firmware reload Signed-off by: Dhananjay Phadke <dhananjay@netxen.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31netxen: Avoid firmware load in PCI probedhananjay@netxen.com
Loading firmware during PCI probe can lead to incorrect initialization, rendering the card unusable until next reboot. This was introduced a while ago as a workaround for firmware bug, a better workaround was submitted for this a while ago. So removing original hack that loads firmware during probe. Signed-off by: Dhananjay Phadke <dhananjay@netxen.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31PS3: fix the bug that 'ifconfig down' would hangMasakazu Mokuno
Fix the bug that 'ifconfig eth0 down' would hang up, reported by Stefan Assmann <sassmann@suse.de>. As we removed netif_poll_enable() from dev->open(), we should not use netif_poll_disable() in dev->stop(). Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp> CC: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31IOC3: Program UART predividers.Ralf Baechle
The IOC3 driver's UART detection bits used to rely on the the firmware setting the UART pre-divider in a way that's apropriate for the 8250 driver which doesn't currently program this register. This happens to work for the console but not rarely for additional ports. While at it, also program the UART to RS-232 PIO mode; it the UART might have been in mac-serial and/or DMA mode though that hasn't actually been observed in practice. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31[libata] Bump driver versionsJeff Garzik
Bump the versions for drivers that were modified, but had not already had a version number bump. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31Page migration: Do not accept invalid nodes in the target nodesetChristoph Lameter
Page migration currently does not check if the target of the move contains nodes that that are invalid (if root attempts to migrate pages) and may try to allocate from invalid nodes if these are specified leading to oopses. Return -EINVAL if an offline node is specified. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Shaohua Li <shaohua.li@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31hugepage: fix broken check for offset alignment in hugepage mappingsDavid Gibson
For hugepage mappings, the file offset, like the address and size, needs to be aligned to the size of a hugepage. In commit 68589bc353037f233fe510ad9ff432338c95db66, the check for this was moved into prepare_hugepage_range() along with the address and size checks. But since BenH's rework of the get_unmapped_area() paths leading up to commit 4b1d89290b62bb2db476c94c82cf7442aab440c8, prepare_hugepage_range() is only called for MAP_FIXED mappings, not for other mappings. This means we're no longer ever checking for an aligned offset - I've confirmed that mmap() will (apparently) succeed with a misaligned offset on both powerpc and i386 at least. This patch restores the check, removing it from prepare_hugepage_range() and putting it back into hugetlbfs_file_mmap(). I'm putting it there, rather than in the get_unmapped_area() path so it only needs to go in one place, than separately in the half-dozen or so arch-specific implementations of hugetlb_get_unmapped_area(). Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Cc: Adam Litke <agl@us.ibm.com> Cc: Andi Kleen <ak@suse.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31MAINTAINERS, order NETERION alphabeticallyJiri Slaby
MAINTAINERS, order NETERION alphabetically Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31i2c-piix4: Fix SB700 PCI device IDShane Huang
We find that SB700 and SB800 use the same SMBus device ID as SB600, which is 0x4385, instead of the already submitted 0x4395. Besides removing the wrong SB700 device ID, add SB800 support to kernel, by renaming the PCI_DEVICE_ID_ATI_IXP600_SMBUS into PCI_DEVICE_ID_ATI_SBX00_SMBUS. Signed-off-by: Shane Huang <shane.huang@amd.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31MAINTAINERS: update DCO infoRandy Dunlap
Drop the URL for DCO (URL is invalid). Also, point to SubmittingPatches for the current DCO. 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>
2007-08-31sigqueue_free: fix the race with collect_signal()Oleg Nesterov
Spotted by taoyue <yue.tao@windriver.com> and Jeremy Katz <jeremy.katz@windriver.com>. collect_signal: sigqueue_free: list_del_init(&first->list); if (!list_empty(&q->list)) { // not taken } q->flags &= ~SIGQUEUE_PREALLOC; __sigqueue_free(first); __sigqueue_free(q); Now, __sigqueue_free() is called twice on the same "struct sigqueue" with the obviously bad implications. In particular, this double free breaks the array_cache->avail logic, so the same sigqueue could be "allocated" twice, and the bug can manifest itself via the "impossible" BUG_ON(!SIGQUEUE_PREALLOC) in sigqueue_free/send_sigqueue. Hopefully this can explain these mysterious bug-reports, see http://marc.info/?t=118766926500003 http://marc.info/?t=118466273000005 Alexey Dobriyan reports this patch makes the difference for the testcase, but nobody has an access to the application which opened the problems originally. Also, this patch removes tasklist lock/unlock, ->siglock is enough. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: taoyue <yue.tao@windriver.com> Cc: Jeremy Katz <jeremy.katz@windriver.com> Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com> Cc: Alexey Dobriyan <adobriyan@sw.ru> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Roland McGrath <roland@redhat.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31userns: don't leak root userAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Acked-by: Cedric Le Goater <clg@fr.ibm.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31request_irq: fix DEBUG_SHIRQ handlingJarek Poplawski
Mariusz Kozlowski reported lockdep's warning: > ================================= > [ INFO: inconsistent lock state ] > 2.6.23-rc2-mm1 #7 > --------------------------------- > inconsistent {in-hardirq-W} -> {hardirq-on-W} usage. > ifconfig/5492 [HC0[0]:SC0[0]:HE1:SE1] takes: > (&tp->lock){+...}, at: [<de8706e0>] rtl8139_interrupt+0x27/0x46b [8139too] > {in-hardirq-W} state was registered at: > [<c0138eeb>] __lock_acquire+0x949/0x11ac > [<c01397e7>] lock_acquire+0x99/0xb2 > [<c0452ff3>] _spin_lock+0x35/0x42 > [<de8706e0>] rtl8139_interrupt+0x27/0x46b [8139too] > [<c0147a5d>] handle_IRQ_event+0x28/0x59 > [<c01493ca>] handle_level_irq+0xad/0x10b > [<c0105a13>] do_IRQ+0x93/0xd0 > [<c010441e>] common_interrupt+0x2e/0x34 ... > other info that might help us debug this: > 1 lock held by ifconfig/5492: > #0: (rtnl_mutex){--..}, at: [<c0451778>] mutex_lock+0x1c/0x1f > > stack backtrace: ... > [<c0452ff3>] _spin_lock+0x35/0x42 > [<de8706e0>] rtl8139_interrupt+0x27/0x46b [8139too] > [<c01480fd>] free_irq+0x11b/0x146 > [<de871d59>] rtl8139_close+0x8a/0x14a [8139too] > [<c03bde63>] dev_close+0x57/0x74 ... This shows that a driver's irq handler was running both in hard interrupt and process contexts with irqs enabled. The latter was done during free_irq() call and was possible only with CONFIG_DEBUG_SHIRQ enabled. This was fixed by another patch. But similar problem is possible with request_irq(): any locks taken from irq handler could be vulnerable - especially with soft interrupts. This patch fixes it by disabling local interrupts during handler's run. (It seems, disabling softirqs should be enough, but it needs more checking on possible races or other special cases). Reported-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: Jarek Poplawski <jarkao2@o2.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31eCryptfs: fix possible fault in ecryptfs_sync_pageRyusuke Konishi
This will avoid a possible fault in ecryptfs_sync_page(). In the function, eCryptfs calls sync_page() method of a lower filesystem without checking its existence. However, there are many filesystems that don't have this method including network filesystems such as NFS, AFS, and so forth. They may fail when an eCryptfs page is waiting for lock. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Acked-by: Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31Fix typo in atmel_spi.cAndrew Victor
Fix cut 'n paste bug in Atmel SPI driver. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Acked-by: David Brownell <david-b@pacbell.net> Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31Fix modpost warning in serial driverRalf Baechle
This is triggered if PCI && !HOTPLUG. MODPOST vmlinux.o WARNING: vmlinux.o(.data+0xc910): Section mismatch: reference to .init.text:pci_ite887x_init (between 'pci_serial_quirks' and 'serial_pci_tbl') Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-31Add MAINTAINERS entry for IOC3 serial driverRalf Baechle
The IOC3 is a multifunction device but not in sense of the PCI specification. Currently its ethernet and serial functionality are supported by two separate drivers authored and maintained by different people, so MAINTAINERS should reflect that. Cc: Patrick Gefre <pfg@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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