Dmitry Torokhov [Wed, 9 Feb 2011 00:29:33 +0000 (16:29 -0800)]
USB: xhci: rework xhci_print_ir_set() to get ir set from xhci itself
xhci->ir_set points to __iomem region, but xhci_print_ir_set accepts
plain struct xhci_intr_reg * causing multiple sparse warning at call
sites and inside the fucntion when we try to read that memory.
Instead of adding __iomem qualifier to the argument let's rework the
function so it itself gets needed register set from xhci and prints
it.
Signed-off-by: Dmitry Torokhov <dtor@vmware.com> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Luben Tuikov [Fri, 11 Feb 2011 19:33:10 +0000 (11:33 -0800)]
USB: Reset USB 3.0 devices on (re)discovery
If the device isn't reset, the XHCI HCD sends
SET ADDRESS to address 0 while the device is
already in Addressed state, and the request is
dropped on the floor as it is addressed to the
default address. This sequence of events, which this
patch fixes looks like this:
usb_reset_and_verify_device()
hub_port_init()
hub_set_address()
SET_ADDRESS to 0 with 1
usb_get_device_descriptor(udev, 8)
usb_get_device_descriptor(udev, 18)
descriptors_changed() --> goto re_enumerate:
hub_port_logical_disconnect()
kick_khubd()
And then:
hub_events()
hub_port_connect_change()
usb_disconnect()
usb_disable_device()
new device struct
sets device state to Powered
choose_address()
hub_port_init() <-- no reset, but SET ADDRESS to 0 with 1, timeout!
The solution is to always reset the device in
hub_port_init() to put it in a known state.
Note from Sarah Sharp:
This patch should be queued for stable trees all the way back to 2.6.34,
since that was the first kernel that supported configured device reset.
The code this patch touches has been there since 2.6.32, but the bug
would never be hit before 2.6.34 because the xHCI driver would
completely reject an attempt to reset a configured device under xHCI.
Signed-off-by: Luben Tuikov <ltuikov@yahoo.com> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: stable@kernel.org
Paul Zimmerman [Sat, 12 Feb 2011 22:07:57 +0000 (14:07 -0800)]
xhci: Fix an error in count_sg_trbs_needed()
The expression
while (running_total < sg_dma_len(sg))
does not take into account that the remaining data length can be less
than sg_dma_len(sg). In that case, running_total can end up being
greater than the total data length, so an extra TRB is counted.
Changing the expression to
while (running_total < sg_dma_len(sg) && running_total < temp)
fixes that.
This patch should be queued for stable kernels back to 2.6.31.
Signed-off-by: Paul Zimmerman <paulz@synopsys.com> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: stable@kernel.org
are incorrect, because running_total can never be zero, so the if()
expression will never be true. I think the intention was that
running_total be in the range of 0 to TRB_MAX_BUFF_SIZE-1, not 1
to TRB_MAX_BUFF_SIZE. So adding a
running_total &= TRB_MAX_BUFF_SIZE - 1;
fixes the problem.
This patch should be queued for stable kernels back to 2.6.31.
Signed-off-by: Paul Zimmerman <paulz@synopsys.com> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: stable@kernel.org
Paul Zimmerman [Sat, 12 Feb 2011 22:06:44 +0000 (14:06 -0800)]
xhci: Clarify some expressions in the TRB math
This makes it easier to spot some problems, which will be fixed by the
next patch in the series. Also change dev_dbg to dev_err in
check_trb_math(), so any math errors will be visible even when running
with debug disabled.
Note: This patch changes the expressions containing
"((1 << TRB_MAX_BUFF_SHIFT) - 1)" to use the equivalent
"(TRB_MAX_BUFF_SIZE - 1)". No change in behavior is intended for
those expressions.
This patch should be queued for stable kernels back to 2.6.31.
Signed-off-by: Paul Zimmerman <paulz@synopsys.com> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: stable@kernel.org
Johan Hovold [Fri, 11 Feb 2011 15:57:08 +0000 (16:57 +0100)]
USB: musb: omap2430: fix kernel panic on reboot
Cancel idle timer in musb_platform_exit.
The idle timer could trigger after clock had been disabled leading to
kernel panic when MUSB_DEVCTL is accessed in musb_do_idle on 2.6.37.
The fault below is no longer triggered on 2.6.38-rc4 (clock is disabled
later, and only if compiled as a module, and the offending memory access
has moved) but the timer should be cancelled nonetheless.
Luben Tuikov [Fri, 11 Feb 2011 19:33:10 +0000 (11:33 -0800)]
USB: Reset USB 3.0 devices on (re)discovery
If the device isn't reset, the XHCI HCD sends
SET ADDRESS to address 0 while the device is
already in Addressed state, and the request is
dropped on the floor as it is addressed to the
default address. This sequence of events, which this
patch fixes looks like this:
usb_reset_and_verify_device()
hub_port_init()
hub_set_address()
SET_ADDRESS to 0 with 1
usb_get_device_descriptor(udev, 8)
usb_get_device_descriptor(udev, 18)
descriptors_changed() --> goto re_enumerate:
hub_port_logical_disconnect()
kick_khubd()
And then:
hub_events()
hub_port_connect_change()
usb_disconnect()
usb_disable_device()
new device struct
sets device state to Powered
choose_address()
hub_port_init() <-- no reset, but SET ADDRESS to 0 with 1, timeout!
The solution is to always reset the device in
hub_port_init() to put it in a known state.
Signed-off-by: Luben Tuikov <ltuikov@yahoo.com> Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
My Galaxy Spica needs this quirk when in modem mode, otherwise
it causes endless USB bus resets and is unusable in this mode.
Unfortunately Samsung decided to reuse ID of its old CDMA phone SGH-I500
for the modem part.
That's why in addition to this patch the visor driver must be prevented
from binding to SPH-I500 ID, so ACM driver can do that.
USB: Add Samsung SGH-I500/Android modem ID switch to visor driver
[USB]Add Samsung SGH-I500/Android modem ID switch to visor driver
Samsung decided to reuse USB ID of its old CDMA phone SGH-I500 for the
modem part of some of their Android phones. At least Galaxy Spica
is affected.
This modem needs ACM driver and does not work with visor driver which
binds the conflicting ID for SGH-I500.
Because SGH-I500 is pretty an old hardware its best to add switch to
visor
driver in cause somebody still wants to use that phone with Linux.
Note that this is needed only when using the Android phone as modem,
not in USB storage or ADB mode.
Alan Stern [Thu, 17 Feb 2011 15:26:38 +0000 (10:26 -0500)]
USB: add quirks entry for Keytouch QWERTY Panel
This patch (as1448) adds a quirks entry for the Keytouch QWERTY Panel
firmware, used in the IEC 60945 keyboard. This device crashes during
enumeration when the computer asks for its configuration string
descriptor.
Johan Hovold [Fri, 11 Feb 2011 15:57:08 +0000 (16:57 +0100)]
usb: musb: omap2430: fix kernel panic on reboot
Cancel idle timer in musb_platform_exit.
The idle timer could trigger after clock had been disabled leading to
kernel panic when MUSB_DEVCTL is accessed in musb_do_idle on 2.6.37.
The fault below is no longer triggered on 2.6.38-rc4 (clock is disabled
later, and only if compiled as a module, and the offending memory access
has moved) but the timer should be cancelled nonetheless.
Linus Torvalds [Wed, 16 Feb 2011 01:51:18 +0000 (17:51 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68knommu: set flow handler for secondary interrupt controller of 5249
m68knommu: remove use of IRQ_FLG_LOCK from 68360 platform support
m68knommu: fix dereference of port.tty
m68knommu: add missing linker __modver section
m68knommu: fix mis-named variable int set_irq_chip loop
m68knommu: add optimize memmove() function
m68k: remove arch specific non-optimized memcmp()
m68knommu: fix use of un-defined _TIF_WORK_MASK
m68knommu: Rename m548x_wdt.c to m54xx_wdt.c
m68knommu: fix m548x_wdt.c compilation after headers renaming
m68knommu: Remove dependencies on nonexistent M68KNOMMU
Greg Ungerer [Tue, 8 Feb 2011 04:40:44 +0000 (14:40 +1000)]
m68knommu: fix mis-named variable int set_irq_chip loop
Compiling for 68360 targets gives:
CC arch/m68knommu/platform/68360/ints.o
arch/m68knommu/platform/68360/ints.c: In function ‘init_IRQ’:
arch/m68knommu/platform/68360/ints.c:135:16: error: ‘irq’ undeclared (first use in this function)
arch/m68knommu/platform/68360/ints.c:135:16: note: each undeclared identifier is reported only once for each function it appears in
Greg Ungerer [Thu, 3 Feb 2011 11:58:39 +0000 (21:58 +1000)]
m68knommu: add optimize memmove() function
Add an m68k/coldfire optimized memmove() function for the m68knommu arch.
This is the same function as used by m68k. Simple speed tests show this
is faster once buffers are larger than 4 bytes, and significantly faster
on much larger buffers (4 times faster above about 100 bytes).
This also goes part of the way to fixing a regression caused by commit ea61bc461d09e8d331a307916530aaae808c72a2 ("m68k/m68knommu: merge MMU and
non-MMU string.h"), which breaks non-coldfire non-mmu builds (which is
the 68x328 and 68360 families). They currently have no memmove() fucntion
defined, since there was none in the m68knommu/lib functions.
Greg Ungerer [Thu, 3 Feb 2011 11:31:20 +0000 (21:31 +1000)]
m68k: remove arch specific non-optimized memcmp()
The m68k arch implements its own memcmp() function. It is not optimized
in any way (it is the most strait forward coding of memcmp you can get).
Remove it and use the kernels standard memcmp() implementation.
This also goes part of the way to fixing a regression caused by commit ea61bc461d09e8d331a307916530aaae808c72a2 ("m68k/m68knommu: merge MMU and
non-MMU string.h"), which breaks non-coldfire non-mmu builds (which is
the 68x328 and 68360 families). They currently have no memcmp() function
defined, since there is none in the m68knommu/lib functions.
Linus Torvalds [Tue, 15 Feb 2011 23:25:33 +0000 (15:25 -0800)]
Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (27 commits)
drm/radeon/kms: hopefully fix pll issues for real (v3)
drm/radeon/kms: add bounds checking to avivo pll algo
drm: fix wrong usages of drm_device in DRM Developer's Guide
drm/radeon/kms: fix a few more atombios endian issues
drm/radeon/kms: improve 6xx/7xx CS error output
drm/radeon/kms: check AA resolve registers on r300
drm/radeon/kms: fix tracking of BLENDCNTL, COLOR_CHANNEL_MASK, and GB_Z on r300
drm/radeon/kms: use linear aligned for evergreen/ni bo blits
drm/radeon/kms: use linear aligned for 6xx/7xx bo blits
drm/radeon: fix race between GPU reset and TTM delayed delete thread.
drm/radeon/kms: evergreen/ni big endian fixes (v2)
drm/radeon/kms: 6xx/7xx big endian fixes
drm/radeon/kms: atombios big endian fixes
drm/radeon: 6xx/7xx non-kms endian fixes
drm/radeon/kms: optimize CS state checking for r100->r500
drm: do not leak kernel addresses via /proc/dri/*/vma
drm/radeon/kms: add connector table for mac g5 9600
radeon mkregtable: Add missing fclose() calls
drm/radeon/kms: fix interlaced modes on dce4+
drm/radeon: fix memory debugging since d961db75ce86a84f1f04e91ad1014653ed7d9f46
...
Linus Torvalds [Tue, 15 Feb 2011 23:25:11 +0000 (15:25 -0800)]
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:
pci: use security_capable() when checking capablities during config space read
Andrea Arcangeli [Tue, 15 Feb 2011 18:02:45 +0000 (19:02 +0100)]
thp: prevent hugepages during args/env copying into the user stack
Transparent hugepages can only be created if rmap is fully
functional. So we must prevent hugepages to be created while
is_vma_temporary_stack() is true.
This also optmizes away some harmless but unnecessary setting of
khugepaged_scan.address and it switches some BUG_ON to VM_BUG_ON.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Tue, 15 Feb 2011 23:19:45 +0000 (15:19 -0800)]
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
ACPI / Video: Probe for output switch method when searching video devices.
ACPI / Wakeup: Enable button GPEs unconditionally during initialization
ACPI / ACPICA: Avoid crashing if _PRW is defined for the root object
ACPI: Fix acpi_os_read_memory() and acpi_os_write_memory() (v2)
Linus Torvalds [Tue, 15 Feb 2011 20:07:35 +0000 (12:07 -0800)]
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: (21 commits)
dmaengine: add slave-dma maintainer
dma: ipu_idmac: do not lose valid received data in the irq handler
dmaengine: imx-sdma: fix up param for the last BD in sdma_prep_slave_sg()
dmaengine: imx-sdma: correct sdmac->status in sdma_handle_channel_loop()
dmaengine: imx-sdma: return sdmac->status in sdma_tx_status()
dmaengine: imx-sdma: set sdmac->status to DMA_ERROR in err_out of sdma_prep_slave_sg()
dmaengine: imx-sdma: remove IMX_DMA_SG_LOOP handling in sdma_prep_slave_sg()
dmaengine i.MX dma: initialize dma capabilities outside channel loop
dmaengine i.MX DMA: do not initialize chan_id field
dmaengine i.MX dma: check sg entries for valid addresses and lengths
dmaengine i.MX dma: set maximum segment size for our device
dmaengine i.MX SDMA: reserve channel 0 by not registering it
dmaengine i.MX SDMA: initialize dma capabilities outside channel loop
dmaengine i.MX SDMA: do not initialize chan_id field
dmaengine i.MX sdma: check sg entries for valid addresses and lengths
dmaengine i.MX sdma: set maximum segment size for our device
DMA: PL08x: fix channel pausing to timeout rather than lockup
DMA: PL08x: fix infinite wait when terminating transfers
dmaengine: imx-sdma: fix inconsistent naming in sdma_assign_cookie()
dmaengine: imx-sdma: propagate error in sdma_probe() instead of returning 0
...
Linus Torvalds [Tue, 15 Feb 2011 20:06:38 +0000 (12:06 -0800)]
Merge branch 'for-2.6.38' of git://linux-nfs.org/~bfields/linux
* 'for-2.6.38' of git://linux-nfs.org/~bfields/linux:
nfsd: break lease on unlink due to rename
nfsd4: acquire only one lease per file
nfsd4: modify fi_delegations under recall_lock
nfsd4: remove unused deleg dprintk's.
nfsd4: split lease setting into separate function
nfsd4: fix leak on allocation error
nfsd4: add helper function for lease setup
nfsd4: split up nfsd_break_deleg_cb
NFSD: memory corruption due to writing beyond the stat array
NFSD: use nfserr for status after decode_cb_op_status
nfsd: don't leak dentry count on mnt_want_write failure
Linus Torvalds [Tue, 15 Feb 2011 18:19:18 +0000 (10:19 -0800)]
Merge branches 'core-fixes-for-linus' and 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
Revert "lockdep, timer: Fix del_timer_sync() annotation"
* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
timer debug: Hide kernel addresses via %pK in /proc/timer_list
Linus Torvalds [Tue, 15 Feb 2011 18:18:48 +0000 (10:18 -0800)]
Merge branch 'perf-fixes-for-linus' of 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:
x86: Fix text_poke_smp_batch() deadlock
perf tools: Fix thread_map event synthesizing in top and record
watchdog, nmi: Lower the severity of error messages
ARM: oprofile: Fix backtraces in timer mode
oprofile: Fix usage of CONFIG_HW_PERF_EVENTS for oprofile_perf_init and friends
Linus Torvalds [Tue, 15 Feb 2011 18:18:29 +0000 (10:18 -0800)]
Merge branch 'x86-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, dmi, debug: Log board name (when present) in dmesg/oops output
x86, ioapic: Don't warn about non-existing IOAPICs if we have none
x86: Fix mwait_usable section mismatch
x86: Readd missing irq_to_desc() in fixup_irq()
x86: Fix section mismatch in LAPIC initialization
Linus Torvalds [Tue, 15 Feb 2011 16:06:36 +0000 (08:06 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
get rid of nameidata_dentry_drop_rcu() calling nameidata_drop_rcu()
drop out of RCU in return_reval
split do_revalidate() into RCU and non-RCU cases
in do_lookup() split RCU and non-RCU cases of need_revalidate
nothing in do_follow_link() is going to see RCU
task_show_regs used to be a debugging aid in the early bringup days
of Linux on s390. /proc/<pid>/status is a world readable file, it
is not a good idea to show the registers of a process. The only
correct fix is to remove task_show_regs.
Reported-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Chris Wright [Tue, 15 Feb 2011 01:21:49 +0000 (17:21 -0800)]
pci: use security_capable() when checking capablities during config space read
This reintroduces commit 47970b1b which was subsequently reverted
as f00eaeea. The original change was broken and caused X startup
failures and generally made privileged processes incapable of reading
device dependent config space. The normal capable() interface returns
true on success, but the LSM interface returns 0 on success. This thinko
is now fixed in this patch, and has been confirmed to work properly.
So, once again...Eric Paris noted that commit de139a3 ("pci: check caps
from sysfs file open to read device dependent config space") caused the
capability check to bypass security modules and potentially auditing.
Rectify this by calling security_capable() when checking the open file's
capabilities for config space reads.
Reported-by: Eric Paris <eparis@redhat.com> Tested-by: Dave Young <hidave.darkstar@gmail.com> Acked-by: James Morris <jmorris@namei.org> Cc: Dave Airlie <airlied@gmail.com> Cc: Alex Riesen <raa.lkml@gmail.com> Cc: Sedat Dilek <sedat.dilek@googlemail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: James Morris <jmorris@namei.org>
Naga Chumbalkar [Mon, 14 Feb 2011 22:47:17 +0000 (22:47 +0000)]
x86, dmi, debug: Log board name (when present) in dmesg/oops output
The "Type 2" SMBIOS record that contains Board Name is not
strictly required and may be absent in the SMBIOS on some
platforms.
( Please note that Type 2 is not listed in Table 3 in Sec 6.2
("Required Structures and Data") of the SMBIOS v2.7
Specification. )
Use the Manufacturer Name (aka System Vendor) name.
Print Board Name only when it is present.
Before the fix:
(i) dmesg output: DMI: /ProLiant DL380 G6, BIOS P62 01/29/2011
(ii) oops output: Pid: 2170, comm: bash Not tainted 2.6.38-rc4+ #3 /ProLiant DL380 G6
After the fix:
(i) dmesg output: DMI: HP ProLiant DL380 G6, BIOS P62 01/29/2011
(ii) oops output: Pid: 2278, comm: bash Not tainted 2.6.38-rc4+ #4 HP ProLiant DL380 G6
Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@hp.com> Reviewed-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: <stable@kernel.org> # .3x - good for debugging, please apply as far back as it applies cleanly
LKML-Reference: <20110214224423.2182.13929.sendpatchset@nchumbalkar.americas.hpqcorp.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Paul Bolle [Mon, 14 Feb 2011 21:52:38 +0000 (22:52 +0100)]
x86, ioapic: Don't warn about non-existing IOAPICs if we have none
mp_find_ioapic() prints errors like:
ERROR: Unable to locate IOAPIC for GSI 13
if it can't find the IOAPIC that manages that specific GSI. I
see errors like that at every boot of a laptop that apparently
doesn't have any IOAPICs.
But if there are no IOAPICs it doesn't seem to be an error that
none can be found. A solution that gets rid of this message is
to directly return if nr_ioapics (still) is zero. (But keep
returning -1 in that case, so nothing breaks from this change.)
The call chain that generates this error is:
pnpacpi_allocated_resource()
case ACPI_RESOURCE_TYPE_IRQ:
pnpacpi_parse_allocated_irqresource()
acpi_get_override_irq()
mp_find_ioapic()
Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Alex Deucher [Mon, 14 Feb 2011 16:43:11 +0000 (11:43 -0500)]
drm/radeon/kms: hopefully fix pll issues for real (v3)
The problematic boards have a recommended reference divider
to be used when spread spectrum is enabled on the laptop panel.
Enable the use of the recommended reference divider along with
the new pll algo.
v2: testing options
v3: When using the fixed reference divider with LVDS, prefer
min m to max p and use fractional feedback dividers.
Linus Torvalds [Mon, 14 Feb 2011 22:49:29 +0000 (14:49 -0800)]
Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: 6657/1: hw_breakpoint: fix ptrace breakpoint advertising on unsupported arch
ARM: 6656/1: hw_breakpoint: avoid UNPREDICTABLE behaviour when reading DBGDSCR
ARM: 6658/1: collie: do actually pass locomo_info to locomo driver
ARM: 6659/1: Thumb-2: Make CONFIG_OABI_COMPAT depend on !CONFIG_THUMB2_KERNEL
ARM: 6654/1: perf/oprofile: fix off-by-one in stack check
ARM: fixup SMP alternatives in modules
ARM: make SWP emulation explicit on !CPU_USE_DOMAINS
ARM: Avoid building unsafe kernels on OMAP2 and MX3
ARM: pxa: Properly configure PWM period for palm27x
ARM: pxa: only save/restore registers when pm functions are defined
ARM: pxa/colibri: use correct SD detect pin
ARM: pxa: fix mfpr_sync to read from valid offset
Tsutomu Itoh [Mon, 14 Feb 2011 00:45:29 +0000 (00:45 +0000)]
Btrfs: check return value of alloc_extent_map()
I add the check on the return value of alloc_extent_map() to several places.
In addition, alloc_extent_map() returns only the address or NULL.
Therefore, check by IS_ERR() is unnecessary. So, I remove IS_ERR() checking.
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
space_args.space_slots is an unsigned 64-bit type controlled by a
possibly unprivileged caller. The comparison as a signed int type
allows providing values that are treated as negative and cause the
subsequent allocation size calculation to wrap, or be truncated to 0.
By providing a size that's truncated to 0, kmalloc() will return
ZERO_SIZE_PTR. It's also possible to provide a value smaller than the
slot count. The subsequent loop ignores the allocation size when
copying data in, resulting in a heap overflow or write to ZERO_SIZE_PTR.
The fix changes the slot count type and comparison typecast to u64,
which prevents truncation or signedness errors, and also ensures that we
don't copy more data than we've allocated in the subsequent loop. Note
that zero-size allocations are no longer possible since there is already
an explicit check for space_args.space_slots being 0 and truncation of
this value is no longer an issue.
Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com> Signed-off-by: Josef Bacik <josef@redhat.com> Reviewed-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Linus Torvalds [Mon, 14 Feb 2011 18:10:07 +0000 (10:10 -0800)]
Merge branch 'rtc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'rtc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
RTC: Fix minor compile warning
RTC: Convert rtc drivers to use the alarm_irq_enable method
RTC: Fix rtc driver ioctl specific shortcutting
Chris Mason [Mon, 14 Feb 2011 17:52:08 +0000 (12:52 -0500)]
Btrfs: don't release pages when we can't clear the uptodate bits
Btrfs tracks uptodate state in an rbtree as well as in the
page bits. This is supposed to enable us to use block sizes other than
the page size, but there are a few parts still missing before that
completely works.
But, our readpage routine trusts this additional range based tracking
of uptodateness, much in the same way the buffer head up to date bits
are trusted for the other filesystems.
The problem is that sometimes we need to allocate memory in order to
split records in the rbtree, even when we are just clearing bits. This
can be difficult when our clearing function is called GFP_ATOMIC, which
can happen in the releasepage path.
So, what happens today looks like this:
releasepage called with GFP_ATOMIC
btrfs_releasepage calls clear_extent_bit
clear_extent_bit fails to allocate ram, leaving the up to date bit set
btrfs_releasepage returns success
The end result is the page being gone, but btrfs thinking the range is
up to date. Later on if someone tries to read that same page, the
btrfs readpage code will return immediately thinking the page is already
up to date.
This commit fixes things to fail the releasepage when we can't clear the
extent state bits. It covers both data pages and metadata tree blocks.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 10 Feb 2011 17:35:00 +0000 (12:35 -0500)]
Btrfs: fix page->private races
There is a race where btrfs_releasepage can drop the
page->private contents just as alloc_extent_buffer is setting
up pages for metadata. Because of how the Btrfs page flags work,
this results in us skipping the crc on the page during IO.
This patch sovles the race by waiting until after the extent buffer
is inserted into the radix tree before it sets page private.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
J. Bruce Fields [Sun, 6 Feb 2011 21:46:30 +0000 (16:46 -0500)]
nfsd: break lease on unlink due to rename
4795bb37effb7b8fe77e2d2034545d062d3788a8 "nfsd: break lease on unlink,
link, and rename", only broke the lease on the file that was being
renamed, and didn't handle the case where the target path refers to an
already-existing file that will be unlinked by a rename--in that case
the target file should have any leases broken as well.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
J. Bruce Fields [Tue, 1 Feb 2011 00:20:39 +0000 (19:20 -0500)]
nfsd4: acquire only one lease per file
Instead of acquiring one lease each time another client opens a file,
nfsd can acquire just one lease to represent all of them, and reference
count it to determine when to release it.
This fixes a regression introduced by c45821d263a8a5109d69a9e8942b8d65bcd5f31a "locks: eliminate fl_mylease
callback": after that patch, only the struct file * is used to determine
who owns a given lease. But since we recently converted the server to
share a single struct file per open, if we acquire multiple leases on
the same file from nfsd, it then becomes impossible on unlocking a lease
to determine which of those leases (all of whom share the same struct
file *) we meant to remove.
Thanks to Takashi Iwai <tiwai@suse.de> for catching a bug in a previous
version of this patch.
Tested-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
NFSD: memory corruption due to writing beyond the stat array
If nfsd fails to find an exported via NFS file in the readahead cache, it
should increment corresponding nfsdstats counter (ra_depth[10]), but due to a
bug it may instead write to ra_depth[11], corrupting the following field.
In a kernel with NFSDv4 compiled in the corruption takes the form of an
increment of a counter of the number of NFSv4 operation 0's received; since
there is no operation 0, this is harmless.
In a kernel with NFSDv4 disabled it corrupts whatever happens to be in the
memory beyond nfsdstats.
Signed-off-by: Konstantin Khorenko <khorenko@openvz.org> Cc: stable@kernel.org Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Dan Williams [Mon, 14 Feb 2011 08:42:08 +0000 (00:42 -0800)]
dmaengine: add slave-dma maintainer
Slave-dma has become the predominant usage model for dmaengine and needs
special attention. Memory-to-memory dma usage cases will continue to be
maintained by Dan.
Cc: Alan Cox <alan@linux.intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
dma: ipu_idmac: do not lose valid received data in the irq handler
Currently when two or more buffers are queued by the camera driver
and so the double buffering is enabled in the idmac, we lose one
frame comming from CSI since the reporting of arrival of the first
frame is deferred by the DMAIC_7_EOF interrupt handler and reporting
of the arrival of the last frame is not done at all. So when requesting
N frames from the image sensor we actually receive N - 1 frames in
user space.
The reason for this behaviour is that the DMAIC_7_EOF interrupt
handler misleadingly assumes that the CUR_BUF flag is pointing to the
buffer used by the IDMAC. Actually it is not the case since the
CUR_BUF flag will be flipped by the FSU when the FSU is sending the
<TASK>_NEW_FRM_RDY signal when new frame data is delivered by the CSI.
When sending this singal, FSU updates the DMA_CUR_BUF and the
DMA_BUFx_RDY flags: the DMA_CUR_BUF is flipped, the DMA_BUFx_RDY
is cleared, indicating that the frame data is beeing written by
the IDMAC to the pointed buffer. DMA_BUFx_RDY is supposed to be
set to the ready state again by the MCU, when it has handled the
received data. DMAIC_7_CUR_BUF flag won't be flipped here by the
IPU, so waiting for this event in the EOF interrupt handler is wrong.
Actually there is no spurious interrupt as described in the comments,
this is the valid DMAIC_7_EOF interrupt indicating reception of the
frame from CSI.
The patch removes code that waits for flipping of the DMAIC_7_CUR_BUF
flag in the DMAIC_7_EOF interrupt handler. As the comment in the
current code denotes, this waiting doesn't help anyway. As a result
of this removal the reporting of the first arrived frame is not
deferred to the time of arrival of the next frame and the drivers
software flag 'ichan->active_buffer' is in sync with DMAIC_7_CUR_BUF
flag, so the reception of all requested frames works.
This has been verified on the hardware which is triggering the
image sensor by the programmable state machine, allowing to
obtain exact number of frames. On this hardware we do not tolerate
losing frames.
This patch also removes resetting the DMA_BUFx_RDY flags of
all channels in ipu_disable_channel() since transfers on other
DMA channels might be triggered by other running tasks and the
buffers should always be ready for data sending or reception.
Signed-off-by: Anatolij Gustschin <agust@denx.de> Reviewed-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Tested-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
David Miller [Mon, 14 Feb 2011 00:37:07 +0000 (16:37 -0800)]
klist: Fix object alignment on 64-bit.
Commit c0e69a5bbc6f ("klist.c: bit 0 in pointer can't be used as flag")
intended to make sure that all klist objects were at least pointer size
aligned, but used the constant "4" which only works on 32-bit.
Use "sizeof(void *)" which is correct in all cases.
Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Cc: stable <stable@kernel.org> Cc: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dave Airlie [Mon, 14 Feb 2011 00:13:34 +0000 (10:13 +1000)]
Merge remote branch 'intel/drm-intel-fixes' of /ssd/git/drm-next into drm-fixes
* 'intel/drm-intel-fixes' of /ssd/git/drm-next:
drm/i915: Fix resume regression from 5d1d0cc
drm/i915/tv: Use polling rather than interrupt-based hotplug
drm/i915: Trigger modesetting if force-audio changes
drm/i915/sdvo: If we have an EDID confirm it matches the mode of the connection
drm/i915: Disable RC6 on Ironlake
drm/i915/lvds: Restore dithering on native modes for gen2/3
drm/i915: Invalidate TLB caches on SNB BLT/BSD rings
Marek Olšák [Mon, 14 Feb 2011 00:01:10 +0000 (01:01 +0100)]
drm/radeon/kms: check AA resolve registers on r300
This is an important security fix because we allowed arbitrary values
to be passed to AARESOLVE_OFFSET. This also puts the right buffer address
in the register.
Signed-off-by: Marek Olšák <maraeo@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Thu, 10 Feb 2011 19:51:34 +0000 (14:51 -0500)]
drm/radeon/kms: use linear aligned for evergreen/ni bo blits
Not only is linear aligned supposedly more performant,
linear general is only supported by the CB in single
slice mode. The texture hardware doesn't support
linear general, but I think the hw automatically
upgrades it to linear aligned.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Thu, 10 Feb 2011 19:51:33 +0000 (14:51 -0500)]
drm/radeon/kms: use linear aligned for 6xx/7xx bo blits
Not only is linear aligned supposedly more performant,
linear general is only supported by the CB in single
slice mode. The texture hardware doesn't support
linear general, but I think the hw automatically
upgrades it to linear aligned.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Thu, 10 Feb 2011 04:46:06 +0000 (14:46 +1000)]
drm/radeon: fix race between GPU reset and TTM delayed delete thread.
My evergreen has been in a remote PC for week and reset has never once
saved me from certain doom, I finally relocated to the box with a
serial cable and noticed an oops when the GPU resets, and the TTM
delayed delete thread tries to remove something from the GTT.
This stops the delayed delete thread from executing across the GPU
reset handler, and woot I can GPU reset now.
Marek Olšák [Sat, 12 Feb 2011 18:21:35 +0000 (19:21 +0100)]
drm/radeon/kms: optimize CS state checking for r100->r500
The colorbuffer, zbuffer, and texture states are checked only once when
they get changed. This improves performance in the apps which emit
lots of draw packets and few state changes.
This drops performance in glxgears by a 1% or so, but glxgears is not
a benchmark we care about.
The time spent in the kernel when running Torcs dropped from 33% to 23%
and the frame rate is higher, which is a good thing.
r600 might need something like this as well.
Signed-off-by: Marek Olšák <maraeo@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Jesper Juhl [Sat, 5 Feb 2011 19:51:53 +0000 (20:51 +0100)]
radeon mkregtable: Add missing fclose() calls
drivers/gpu/drm/radeon/mkregtable.c:parser_auth() almost always remembers
to fclose(file) before returning, but it misses two spots.
This is not really important since the process will exit shortly after and
thus close the file for us, but being explicit prevents static analysis
tools from complaining about leaked memory and missing fclose() calls and
it also seems to be the prefered style of the existing code to explicitly
close the file.
So, here's a patch to add the two missing fclose() calls.
Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher [Sun, 6 Feb 2011 19:23:26 +0000 (14:23 -0500)]
drm/radeon/kms: fix interlaced modes on dce4+
- set scaler table clears the interleave bit, need to
reset it in encoder quirks, this was already done for
pre-dce4.
- remove the interleave settings from set_base() functions
this is now handled in the encoder quirks functions, and
isn't technically part of the display base setup.
- rename evergreen_do_set_base() to dce4_do_set_base() since
it's used on both evergreen and NI asics.