- 12 5月, 2011 3 次提交
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由 Catalin Marinas 提交于
Since mandatory barriers may be used (explicitly or implicitly via readl etc.) to ensure the ordering between Device and Normal memory accesses, a DMB is not enough. This patch converts it to a DSB. Cc: Colin Cross <ccross@android.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Arnd Bergmann 提交于
GDB's interrupt.exp test cases currenly fail on ARM. The problem is how do_signal handled restarting interrupted system calls: The entry.S assembler code determines that we come from a system call; and that information is passed as "syscall" parameter to do_signal. That routine then calls get_signal_to_deliver [*] and if a signal is to be delivered, calls into handle_signal. If a system call is to be restarted either after the signal handler returns, or if no handler is to be called in the first place, the PC is updated after the get_signal_to_deliver call, either in handle_signal (if we have a handler) or at the end of do_signal (otherwise). Now the problem is that during [*], the call to get_signal_to_deliver, a ptrace intercept may happen. During this intercept, the debugger may change registers, including the PC. This is done by GDB if it wants to execute an "inferior call", i.e. the execution of some code in the debugged program triggered by GDB. To this purpose, GDB will save all registers, allocate a stack frame, set up PC and arguments as appropriate for the call, and point the link register to a dummy breakpoint instruction. Once the process is restarted, it will execute the call and then trap back to the debugger, at which point GDB will restore all registers and continue original execution. This generally works fine. However, now consider what happens when GDB attempts to do exactly that while the process was interrupted during execution of a to-be- restarted system call: do_signal is called with the syscall flag set; it calls get_signal_to_deliver, at which point the debugger takes over and changes the PC to point to a completely different place. Now get_signal_to_deliver returns without a signal to deliver; but now do_signal decides it should be restarting a system call, and decrements the PC by 2 or 4 -- so it now points to 2 or 4 bytes before the function GDB wants to call -- which leads to a subsequent crash. To fix this problem, two things need to be supported: - do_signal must be able to recognize that get_signal_to_deliver changed the PC to a different location, and skip the restart-syscall sequence - once the debugger has restored all registers at the end of the inferior call sequence, do_signal must recognize that *now* it needs to restart the pending system call, even though it was now entered from a breakpoint instead of an actual svc instruction This set of issues is solved on other platforms, usually by one of two mechanisms: - The status information "do_signal is handling a system call that may need restarting" is itself carried in some register that can be accessed via ptrace. This is e.g. on Intel the "orig_eax" register; on Sparc the kernel defines a magic extra bit in the flags register for this purpose. This allows GDB to manage that state: reset it when doing an inferior call, and restore it after the call is finished. - On s390, do_signal transparently handles this problem without requiring GDB interaction, by performing system call restarting in the following way: first, adjust the PC as necessary for restarting the call. Then, call get_signal_to_deliver; and finally just continue execution at the PC. This way, if GDB does not change the PC, everything is as before. If GDB *does* change the PC, execution will simply continue there -- and once GDB restores the PC it saved at that point, it will automatically point to the *restarted* system call. (There is the minor twist how to handle system calls that do *not* need restarting -- do_signal will undo the PC change in this case, after get_signal_to_deliver has returned, and only if ptrace did not change the PC during that call.) Because there does not appear to be any obvious register to carry the syscall-restart information on ARM, we'd either have to introduce a new artificial ptrace register just for that purpose, or else handle the issue transparently like on s390. The patch below implements the second option; using this patch makes the interrupt.exp test cases pass on ARM, with no regression in the GDB test suite otherwise. Cc: patches@linaro.org Signed-off-by: NUlrich Weigand <ulrich.weigand@linaro.org> Signed-off-by: NArnd Bergmann <arnd.bergmann@linaro.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Will Deacon 提交于
The SPARSEMEM code allocates memmap entries only for sections which are present (i.e. those which contain some valid memory). The membank checks in free_unused_memmap do not take this into account and can incorrectly attempt to free memory which is not allocated, resulting in a BUG() in the bootmem code. However, if memory is configured as follows: |<----section---->|<----hole---->|<----section---->| +--------+--------+--------------+--------+--------+ | bank 0 | unused | | bank 1 | unused | +--------+--------+--------------+--------+--------+ where a bank only occupies part of a section, the memmap allocated for the remainder of the section *can* be freed. This patch modifies the checks in free_unused_memmap so that only valid memmap entries are considered for removal. Acked-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 07 5月, 2011 5 次提交
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由 Nicolas Pitre 提交于
For correctness, the initial page table located right before the decompressed kernel should be considered when determining if relocation is required. Signed-off-by: NNicolas Pitre <nicolas.pitre@linaro.org> Tested-by: NShawn Guo <shawn.guo@linaro.org> Acked-by: NTony Lindgren <tony@atomide.com>
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由 Nicolas Pitre 提交于
If the zImage load address is slightly below the relocation address, there is a risk for the copied data to overwrite the copy loop or cache flush code that the relocation process requires. Always bump the relocation address by the size of that code to avoid this issue. Noticed by Tony Lindgren <tony@atomide.com>. While at it, let's start the copy from the restart symbol which makes the above code size computation possible by the assembler directly (same sections), given that we don't need to preserve the code before that point anyway. And therefore we don't need to carry the _start pointer in r5 anymore. Signed-off-by: NNicolas Pitre <nicolas.pitre@linaro.org> Tested-by: NTony Lindgren <tony@atomide.com>
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由 Tony Lindgren 提交于
Otherwise cache_clean_flush can overwrite some of the relocated area depending on where the kernel image gets loaded. This fixes booting on n900 after commit 6d7d0ae5 (ARM: 6750/1: improvements to compressed/head.S). Thanks to Aaro Koskinen <aaro.koskinen@nokia.com> for debugging the address of the relocated area that gets corrupted, and to Nicolas Pitre <nicolas.pitre@linaro.org> for the other uncompress related fixes. Signed-off-by: NTony Lindgren <tony@atomide.com> Signed-off-by: NNicolas Pitre <nicolas.pitre@linaro.org>
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由 Nicolas Pitre 提交于
With ARMv5+ and EABI, the compiler expects a 64-bit aligned stack so instructions like STRD and LDRD can be used. Without this, mysterious boot failures were seen semi randomly with the LZMA decompressor. While at it, let's align .bss as well. Signed-off-by: NNicolas Pitre <nicolas.pitre@linaro.org> Tested-by: NShawn Guo <shawn.guo@linaro.org> Acked-by: NTony Lindgren <tony@atomide.com> CC: stable@kernel.org
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- 06 5月, 2011 2 次提交
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由 Russell King 提交于
WARNING: drivers/video/built-in.o(.devinit.text+0x38): Section mismatch in reference from the function acornfb_probe() to the function .init.text:acornfb_setup() The function __devinit acornfb_probe() references a function __init acornfb_setup(). If acornfb_setup is only used by acornfb_probe then annotate acornfb_setup with a matching annotation. WARNING: drivers/video/built-in.o(.devinit.text+0x3c): Section mismatch in reference from the function acornfb_probe() to the function .init.text:acornfb_init_fbinfo() The function __devinit acornfb_probe() references a function __init acornfb_init_fbinfo(). If acornfb_init_fbinfo is only used by acornfb_probe then annotate acornfb_init_fbinfo with a matching annotation. WARNING: drivers/video/built-in.o(.devinit.text+0x4c0): Section mismatch in reference from the function acornfb_probe() to the (unknown reference) .init.data:(unknown) The function __devinit acornfb_probe() references a (unknown reference) __initdata (unknown). If (unknown) is only used by acornfb_probe then annotate (unknown) with a matching annotation. WARNING: drivers/video/built-in.o(.devinit.text+0x4c8): Section mismatch in reference from the function acornfb_probe() to the (unknown reference) .init.data:(unknown) The function __devinit acornfb_probe() references a (unknown reference) __initdata (unknown). If (unknown) is only used by acornfb_probe then annotate (unknown) with a matching annotation. WARNING: drivers/video/built-in.o(.devinit.text+0x4cc): Section mismatch in reference from the function acornfb_probe() to the (unknown reference) .init.data:(unknown) The function __devinit acornfb_probe() references a (unknown reference) __initdata (unknown). If (unknown) is only used by acornfb_probe then annotate (unknown) with a matching annotation. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
WARNING: drivers/net/arm/built-in.o(.data+0x0): Section mismatch in reference from the variable etherh_driver to the function .init.text:etherh_probe() The variable etherh_driver references the function __init etherh_probe() If the reference is valid then annotate the variable with __init* or __refdata (see linux/init.h) or name the variable: *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 05 5月, 2011 8 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6由 Linus Torvalds 提交于
* 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6: staging: Remove a warning for drivers/staging/wlan-ng/cfg80211.c staging: intel_sst: intelmid needs delay.h staging: solo6x10: add select SND_PCM to fix build error staging: usbip: vhci: fix oops on subsequent attach staging: ft1000: Remove unnecessary EXPORT_SYMBOLs staging: rts_pstor: use #ifdef instead of #if staging: rts_pstor: Add <linux/vmalloc.h> staging: gma500: Depend on X86 staging: olpc: Add <linux/delay.h>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6由 Linus Torvalds 提交于
* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: xHCI: Clear PLC in xhci_bus_resume() USB: fix regression in usbip by setting has_tt flag usb/isp1760: Report correct urb status after unlink omap:usb: add regulator support for EHCI mfd: Fix usbhs_enable error handling usb: musb: gadget: Fix out-of-sync runtime pm calls usb: musb: omap2430: Fix retention idle on musb peripheral only boards
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: ceph: do not call __mark_dirty_inode under i_lock libceph: fix ceph_osdc_alloc_request error checks ceph: handle ceph_osdc_new_request failure in ceph_writepages_start libceph: fix ceph_msg_new error path ceph: use ihold() when i_lock is held
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6由 Linus Torvalds 提交于
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: [media] ngene: Fix CI data transfer regression Fix CI data transfer regression introduced by previous cleanup. [media] v4l: make sure drivers supply a zeroed struct v4l2_subdev [media] Missing frontend config for LME DM04/QQBOX [media] rc_core: avoid kernel oops when rmmod saa7134 [media] imon: add conditional locking in change_protocol [media] rc: show RC_TYPE_OTHER in sysfs [media] ite-cir: modular build on ppc requires delay.h include [media] mceusb: add Dell transceiver ID
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git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6由 Linus Torvalds 提交于
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: firewire: Fix for broken configrom updates in quick succession
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由 Linus Torvalds 提交于
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: flex_arrays: allow zero length flex arrays flex_array: flex_array_prealloc takes a number of elements, not an end SELinux: pass last path component in may_create
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由 Thomas Gleixner 提交于
The SLUB allocator use of the cmpxchg_double logic was wrong: it actually needs the irq-safe one. That happens automatically when we use the native unlocked 'cmpxchg8b' instruction, but when compiling the kernel for older x86 CPUs that do not support that instruction, we fall back to the generic emulation code. And if you don't specify that you want the irq-safe version, the generic code ends up just open-coding the cmpxchg8b equivalent without any protection against interrupts or preemption. Which definitely doesn't work for SLUB. This was reported by Werner Landgraf <w.landgraf@ru.ru>, who saw instability with his distro-kernel that was compiled to support pretty much everything under the sun. Most big Linux distributions tend to compile for PPro and later, and would never have noticed this problem. This also fixes the prototypes for the irqsafe cmpxchg_double functions to use 'bool' like they should. [ Btw, that whole "generic code defaults to no protection" design just sounds stupid - if the code needs no protection, there is no reason to use "cmpxchg_double" to begin with. So we should probably just remove the unprotected version entirely as pointless. - Linus ] Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Reported-and-tested-by: Nwerner <w.landgraf@ru.ru> Acked-and-tested-by: NIngo Molnar <mingo@elte.hu> Acked-by: NChristoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: Tejun Heo <tj@kernel.org> Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1105041539050.3005@ionosSigned-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Sage Weil 提交于
The __mark_dirty_inode helper now takes i_lock as of 250df6ed. Fix the one ceph callers that held i_lock (__ceph_mark_dirty_caps) to return the flags value so that the callers can do it outside of i_lock. Signed-off-by: NSage Weil <sage@newdream.net>
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- 04 5月, 2011 17 次提交
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由 Linus Torvalds 提交于
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6由 Linus Torvalds 提交于
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/radeon/kms: fix gart setup on fusion parts (v2) drm: Send pending vblank events before disabling vblank. drm/radeon: fix regression on atom cards with hardcoded EDID record. drm/radeon/kms: add some new pci ids
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由 Alex Deucher 提交于
Out of the entire GART/VM subsystem, the hw designers changed the location of 3 regs. v2: airlied: add parameter for userspace to work from. Signed-off-by: NAlex Deucher <alexdeucher@gmail.com> Signed-off-by: NJerome Glisse <jglisse@redhat.com> Cc: stable@kernel.org Signed-off-by: NDave Airlie <airlied@redhat.com>
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This is the least-bad behaviour. It means that we signal the vblank event before it actually happens, but since we're disabling vblanks there's no guarantee that it will *ever* happen otherwise. This prevents GL applications which use WaitMSC from hanging indefinitely. Signed-off-by: NChristopher James Halse Rogers <christopher.halse.rogers@canonical.com> Signed-off-by: NDave Airlie <airlied@redhat.com>
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由 Dave Airlie 提交于
Since fafcf94e introduced an edid size, it seems to have broken this path. This manifest as oops on T500 Lenovo laptops with dual graphics primarily. Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=33812 cc: stable@kernel.org Reviewed-by: NAlex Deucher <alexdeucher@gmail.com> Signed-off-by: NDave Airlie <airlied@redhat.com>
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由 Alex Deucher 提交于
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com> Cc: stable@kernel.org Signed-off-by: NDave Airlie <airlied@redhat.com>
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由 Linus Torvalds 提交于
In particular, s_freeing_list needs to be initialized early, since it is used on some of the error paths when mounts fail. The mapping inode, for example, would be initialized and then free'd on an error path before s_freeing_list was initialized, but the inode drop operation needs the s_freeing_list to be set up. Normally you'd never see this, because not only is logfs fairly rare, but a successful mount will never have any issues. Reported-by: Nwerner <w.landgraf@ru.ru> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Harry Wei 提交于
Hi us, When i was compiling kernel, a warning happened to me. The warning said like following. drivers/staging/wlan-ng/cfg80211.c:709: warning: initialization from incompatible pointer type. See http://s1202.photobucket.com/albums/bb364/harrywei/?action=view¤t=patched2.png for more details. So i patch like following. Signed-off-by: NHarry Wei <harryxiyou@gmail.com> Acked-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Andiry Xu 提交于
This patch clears PORT_PLC if xhci_bus_resume() resumes a previous suspended port, because if a port transition from U3 to U0 state, it will report a port link state change, and software should clear the corresponding PLC bit. It also uses hcd->speed to check if a port is a USB2 protocol port. The patch fixes the issue that USB keyboard can not wakeup system from hibernation. Signed-off-by: NAndiry Xu <andiry.xu@amd.com> Signed-off-by: NSarah Sharp <sarah.a.sharp@linux.intel.com>
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由 Sage Weil 提交于
ceph_osdc_alloc_request returns NULL on failure. Signed-off-by: NSage Weil <sage@newdream.net>
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由 Henry C Chang 提交于
We should unlock the page and return -ENOMEM if ceph_osdc_new_request failed. Signed-off-by: NHenry C Chang <henry_c_chang@tcloudcomputing.com> Signed-off-by: NSage Weil <sage@newdream.net>
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由 Henry C Chang 提交于
If memory allocation failed, calling ceph_msg_put() will cause GPF since some of ceph_msg variables are not initialized first. Fix Bug #970. Signed-off-by: NHenry C Chang <henry_c_chang@tcloudcomputing.com> Signed-off-by: NSage Weil <sage@newdream.net>
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由 Sage Weil 提交于
See 0444d76a. Signed-off-by: NSage Weil <sage@newdream.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen由 Linus Torvalds 提交于
* 'stable/bug-fixes-for-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen: mask_rw_pte mark RO all pagetable pages up to pgt_buf_top xen/mmu: Add workaround "x86-64, mm: Put early page table high"
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git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: mmc: sdhci: Check mrq != NULL in sdhci_tasklet_finish mmc: sdhci: Check mrq->cmd in sdhci_tasklet_finish mmc: tmio: fix .set_ios(MMC_POWER_UP) handling mmc: fix a race between card-detect rescan and clock-gate work instances mmc: omap: Fix possible NULL pointer deref mmc: core: mmc_add_card(): fix missing break in switch statement mmc: sdhci-pci: Fix error case in sdhci_pci_probe_slot()
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由 Linus Torvalds 提交于
Merge branches 'x86-fixes-for-linus' and 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, reboot: Fix relocations in reboot_32.S x86, NUMA: Fix empty memblk detection in numa_cleanup_meminfo() x86, AMD: Fix APIC timer erratum 400 affecting K8 Rev.A-E processors * 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: genirq: Fix typo CONFIG_GENIRC_IRQ_SHOW_LEVEL
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- 03 5月, 2011 5 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: wm831x-ts - move BTN_TOUCH reporting to data transfer Input: wm831x-ts - allow IRQ flags to be specified Input: wm831x-ts - fix races with IRQ management
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (47 commits) sysctl: net: call unregister_net_sysctl_table where needed Revert: veth: remove unneeded ifname code from veth_newlink() smsc95xx: fix reset check tg3: Fix failure to enable WoL by default when possible networking: inappropriate ioctl operation should return ENOTTY amd8111e: trivial typo spelling: Negotitate -> Negotiate ipv4: don't spam dmesg with "Using LC-trie" messages af_unix: Only allow recv on connected seqpacket sockets. mii: add support of pause frames in mii_get_an net: ftmac100: fix scheduling while atomic during PHY link status change usbnet: Transfer of maintainership usbnet: add support for some Huawei modems with cdc-ether ports bnx2: cancel timer on device removal iwl4965: fix "Received BA when not expected" iwlagn: fix "Received BA when not expected" dsa/mv88e6131: fix unknown multicast/broadcast forwarding on mv88e6085 usbnet: Resubmit interrupt URB if device is open iwl4965: fix "TX Power requested while scanning" iwlegacy: led stay solid on when no traffic b43: trivial: update module info about ucode16_mimo firmware ...
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由 Alan Stern 提交于
This patch (as1460) fixes a regression in the usbip driver caused by the new check for Transaction Translators in USB-2 hubs. The root hub registered by vhci_hcd needs to have the has_tt flag set, because it can connect to low- and full-speed devices as well as high-speed devices. Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Reported-and-tested-by: NNikola Ciprich <nikola.ciprich@linuxbox.cz> CC: <stable@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Arvid Brodin 提交于
This fixes a bug in my previous (2.6.38) patch series which caused urb->status value to be wrong after unlink (broke usbtest 11, 12). Signed-off-by: NArvid Brodin <arvid.brodin@enea.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Lucian Adrian Grijincu 提交于
ctl_table_headers registered with register_net_sysctl_table should have been unregistered with the equivalent unregister_net_sysctl_table Signed-off-by: NLucian Adrian Grijincu <lucian.grijincu@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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