Bjorn Helgaas [Thu, 25 Mar 2010 15:28:30 +0000 (09:28 -0600)]
x86/PCI: truncate _CRS windows with _LEN > _MAX - _MIN + 1
Yanko's GA-MA78GM-S2H (BIOS F11) reports the following resource in a PCI
host bridge _CRS:
[07] 32-Bit DWORD Address Space Resource
Min Relocatability : MinFixed
Max Relocatability : MaxFixed
Address Minimum : CFF00000 (_MIN)
Address Maximum : FEBFFFFF (_MAX)
Address Length : 3EE10000 (_LEN)
This is invalid per spec (ACPI 4.0, 6.4.3.5) because it's a fixed size,
fixed location descriptor, but _LEN != _MAX - _MIN + 1.
Based on https://bugzilla.kernel.org/show_bug.cgi?id=15480#c15, I think
Windows handles this by truncating the window so it fits between _MIN and
_MAX. I also verified this by modifying the SeaBIOS DSDT and booting
Windows 2008 R2 with qemu.
This patch makes Linux truncate the window, too, which fixes:
http://bugzilla.kernel.org/show_bug.cgi?id=15480
Bjorn Helgaas [Mon, 22 Mar 2010 22:34:05 +0000 (16:34 -0600)]
PCI: don't say we claimed a resource if we failed
pci_claim_resource() can fail, so pay attention and only claim success
when it actually succeeded. If pci_claim_resource() fails, it prints a
useful diagnostic.
Clemens Ladisch [Mon, 22 Mar 2010 08:52:16 +0000 (09:52 +0100)]
PCI quirk: RS780/RS880: work around missing MSI initialization
AMD says in section 2.5.4 (GFX MSI Enable) of #43291 (AMD 780G Family
Register Programming Requirements):
The SBIOS must enable internal graphics MSI capability in GCCFG by
setting the following: NBCFG.NB_CNTL.STRAP_MSI_ENABLE='1'
Quite a few BIOS writers misinterpret this sentence and think that
enabling MSI is an optional feature. However, clearing that bit just
prevents delivery of MSI messages but does not remove the MSI PCI
capabilities registers, and so leaves these devices unusable for any
driver that attempts to use MSI.
Setting that bit is not possible after the BIOS has locked down the
configuration registers, so we have to manually disable MSI for the
affected devices.
This fixes the codec communication errors in the HDA driver when
accessing the HDMI audio device, and allows us to get rid of the
overcautious quirk in radeon_irq_kms.c.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Tested-by: Alex Deucher <alexdeucher@gamil.com> Cc: <stable@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Tim Yamin [Fri, 19 Mar 2010 21:22:58 +0000 (14:22 -0700)]
PCI quirk: only apply CX700 PCI bus parking quirk if external VT6212L is present
Apply the CX700 quirk only when an external VT6212L is present (which
is the case for the errant hardware the quirk was written for), don't
touch the settings otherwise -- Hauppage PVR-500 tuners need PCI Bus
Parking in order to work and when that's turned on everything seems
to behave fine.
I guess the underlying problem is a combination of an external VT6212L
and the CX700 rather than the CX700's PCI being broken completely for
all cases...
Bjorn Helgaas [Fri, 19 Mar 2010 20:56:27 +0000 (14:56 -0600)]
PCI: complain about devices that seem to be broken
If we can tell that a device isn't working correctly, we should tell
the user to make debugging easier. Otherwise, it can take a lot of
work to determine whether the problem is in the driver, PCMCIA, PCI,
hardware, etc., as in http://bugzilla.kernel.org/show_bug.cgi?id=12006
Bjorn Helgaas [Tue, 16 Mar 2010 21:53:03 +0000 (15:53 -0600)]
PCI: make disabled window printk style match the enabled ones
No functional change; this just tweaks the changes from 349e1823a405
so the new printks for disabled PCI-to-PCI bridge windows match the
ones for the enabled windows.
Bjorn Helgaas [Fri, 12 Mar 2010 00:01:09 +0000 (17:01 -0700)]
resources: add interfaces that return conflict information
request_resource() and insert_resource() only return success or failure,
which no information about what existing resource conflicted with the
proposed new reservation. This patch adds request_resource_conflict()
and insert_resource_conflict(), which return the conflicting resource.
Callers may use this for better error messages or to adjust the new
resource and retry the request.
The PCIBIOS_ errors are returned from the PCI functions generated by the
PCI_OP_READ() and PCI_OP_WRITE() macros.
In a similar manner, pcix_set_mmrbc() also returns the PCIBIOS_ error values
returned from pci_read_config_[word|dword]() and pci_write_config_word().
Following pcix_get_max_mmrbc()'s example, the following patch simply returns
-EINVAL for all PCIBIOS_ errors encountered by pcix_get_mmrbc(), and -EINVAL
or -EIO for those encountered by pcix_set_mmrbc().
This simplification was chosen in light of the fact that none of the current
callers of these functions are interested in the specific type of error
encountered. In the future, should this change, one could simply create a
function that maps each PCIBIOS_ error to a corresponding unique errno value,
which could be called by pcix_get_max_mmrbc(), pcix_get_mmrbc(), and
pcix_set_mmrbc().
Additionally, this patch eliminates some unnecessary variables.
Cc: stable@kernel.org Signed-off-by: Dean Nelson <dnelson@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Dean Nelson [Wed, 10 Mar 2010 03:26:48 +0000 (22:26 -0500)]
PCI: fix access of PCI_X_CMD by pcix get and set mmrbc functions
An e1000 driver on a system with a PCI-X bus was always being returned
a value of 135 from both pcix_get_mmrbc() and pcix_set_mmrbc(). This
value reflects an error return of PCIBIOS_BAD_REGISTER_NUMBER from
pci_bus_read_config_dword(,, cap + PCI_X_CMD,).
This is because for a dword, the following portion of the PCI_OP_READ()
macro:
if (PCI_##size##_BAD) return PCIBIOS_BAD_REGISTER_NUMBER;
expands to:
if (pos & 3) return PCIBIOS_BAD_REGISTER_NUMBER;
And is always true for 'cap + PCI_X_CMD', which is 0xe4 + 2 = 0xe6. ('cap' is
the result of calling pci_find_capability(, PCI_CAP_ID_PCIX).)
The same problem exists for pci_bus_write_config_dword(,, cap + PCI_X_CMD,).
In both cases, instead of calling _dword(), _word() should be called.
Cc: stable@kernel.org Signed-off-by: Dean Nelson <dnelson@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Dean Nelson [Wed, 10 Mar 2010 03:26:40 +0000 (22:26 -0500)]
PCI: fix return value from pcix_get_max_mmrbc()
For the PCI_X_STATUS register, pcix_get_max_mmrbc() is returning an incorrect
value, which is based on:
(stat & PCI_X_STATUS_MAX_READ) >> 12
Valid return values are 512, 1024, 2048, 4096, which correspond to a 'stat'
(masked and right shifted by 21) of 0, 1, 2, 3, respectively.
A right shift by 11 would generate the correct return value when 'stat' (masked
and right shifted by 21) has a value of 1 or 2. But for a value of 0 or 3 it's
not possible to generate the correct return value by only right shifting.
Fix is based on pcix_get_mmrbc()'s similar dealings with the PCI_X_CMD register.
Cc: stable@kernel.org Signed-off-by: Dean Nelson <dnelson@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Linus Torvalds [Fri, 19 Mar 2010 16:43:06 +0000 (09:43 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (205 commits)
ceph: update for write_inode API change
ceph: reset osd after relevant messages timed out
ceph: fix flush_dirty_caps race with caps migration
ceph: include migrating caps in issued set
ceph: fix osdmap decoding when pools include (removed) snaps
ceph: return EBADF if waiting for caps on closed file
ceph: set osd request message front length correctly
ceph: reset front len on return to msgpool; BUG on mismatched front iov
ceph: fix snaptrace decoding on cap migration between mds
ceph: use single osd op reply msg
ceph: reset bits on connection close
ceph: remove bogus mds forward warning
ceph: remove fragile __map_osds optimization
ceph: fix connection fault STANDBY check
ceph: invalidate_authorizer without con->mutex held
ceph: don't clobber write return value when using O_SYNC
ceph: fix client_request_forward decoding
ceph: drop messages on unregistered mds sessions; cleanup
ceph: fix comments, locking in destroy_inode
ceph: move dereference after NULL test
...
Fix trivial conflicts in Documentation/ioctl/ioctl-number.txt
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
cifs: trivial white space
[CIFS] checkpatch cleanup
cifs: add cifs_revalidate_file
cifs: add a CIFSSMBUnixQFileInfo function
cifs: add a CIFSSMBQFileInfo function
cifs: overhaul cifs_revalidate and rename to cifs_revalidate_dentry
Linus Torvalds [Fri, 19 Mar 2010 00:02:35 +0000 (17:02 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: (96 commits)
Blackfin: stop cleaning include/asm/asm-offsets.h
Blackfin: scale calibration when cpu freq changes
Blackfin: eat spurious space in asm/dpmc.h
Blackfin: fix anomaly 283 handling with exact hardware error
Blackfin: bf537-stamp: add example ADXL346 orientation resources
Blackfin: bf537-stamp: add example AD2S1210 IIO resources
Blackfin: don't support keypad wakeup from hibernate
Blackfin: bf537-stamp: add example AD7416 IIO resources
Blackfin: bf537-stamp: add example ADP8860 backlight/led resources
Blackfin: bf537-stamp: add example AD7414 temp sensor resources
Blackfin: rename AD1836 to AD183X in board files
Blackfin: bf537-stamp: add example AD2S120x resources
Blackfin: add support for the on-chip MAC status interrupts
Blackfin: asm/page.h: pull in asm-generic headers
Blackfin: mark gpio lib functions static
Blackfin: bf537-stamp: add example ADAU1361 resources
Blackfin: GPIO: implement to_irq handler
Blackfin: bf537-stamp: add example ADP122/ADP150 power regulator resources
Blackfin: bf537-stamp: add example AD2S90 resources
Blackfin: bf537-stamp: add example AD5398 power regulator resources
...
Linus Torvalds [Thu, 18 Mar 2010 23:59:30 +0000 (16:59 -0700)]
Merge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
ARM/OMAP: Remove the +x bit from a couple of source files
omap: McBSP: Drop unnecessary status/error bit clearing on reg_cacheretrieved register values
OMAP4: fix temporary hacks that break multi-omap PM
OMAP2: cpu_is_omap2*: fix compile-time removal of unused code
omap3: pandora: add missing i2c3 board_info
omap: mach-omap2/io.c: fix function declarations
omap: Fix gpio_resume_after_retention
omap3: Fix support for the LEDs connected to GPIO outputs on IGEP v2board
omap: Checkpatch cleanup for blizzard.h
omap: pass the reboot command to the boot loader
omap2/3/4: mailbox: remove compiler warning
OMAP2: serial.c: Fix number of uarts in early_init
omap: Enable PM_RUNTIME in defconfigs to avoid USB compile errors
omap2: Update n8x0 defconfig to test multi-omap and DMA api changes
omap2: add USB initialization for tusb6010
omap4: Fix build break by moving omap_smc1 into a separate .S
omap2/3/4: ehci: avoid compiler error with touchbook
omap3: Fix compile for Touch Book early_param
Linus Torvalds [Thu, 18 Mar 2010 23:57:24 +0000 (16:57 -0700)]
Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: (27 commits)
microblaze: entry.S use delay slot for return handlers
microblaze: Save current task directly
microblaze: Simplify entry.S - save/restore r3/r4 - ret_from_trap
microblaze: PCI early support for noMMU system
microblaze: Fix dma alloc and free coherent dma functions
microblaze: Add consistent code
microblaze: pgtable.h: move consistent functions
microblaze: Remove ancient Kconfig option for consistent mapping
microblaze: Remove VMALLOC_VMADDR
microblaze: Add define for ASM_LOOP
microblaze: Preliminary support for dma drivers
microblaze: remove trailing space in messages
microblaze: Use generic show_mem()
microblaze: Change temp register for cmdline
microblaze: Preliminary support for dma drivers
microblaze: Move cache function to cache.c
microblaze: Add support from PREEMPT
microblaze: Add support for Xilinx PCI host bridge
microblaze: Enable PCI, missing files
microblaze: Add core PCI files
...
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (69 commits)
[SCSI] scsi_transport_fc: Fix synchronization issue while deleting vport
[SCSI] bfa: Update the driver version to 2.1.2.1.
[SCSI] bfa: Remove unused header files and did some cleanup.
[SCSI] bfa: Handle SCSI IO underrun case.
[SCSI] bfa: FCS and include file changes.
[SCSI] bfa: Modified the portstats get/clear logic
[SCSI] bfa: Replace bfa_get_attr() with specific APIs
[SCSI] bfa: New portlog entries for events (FIP/FLOGI/FDISC/LOGO).
[SCSI] bfa: Rename pport to fcport in BFA FCS.
[SCSI] bfa: IOC fixes, check for IOC down condition.
[SCSI] bfa: In MSIX mode, ignore spurious RME interrupts when FCoE ports are in FW mismatch state.
[SCSI] bfa: Fix Command Queue (CPE) full condition check and ack CPE interrupt.
[SCSI] bfa: IOC recovery fix in fcmode.
[SCSI] bfa: AEN and byte alignment fixes.
[SCSI] bfa: Introduce a link notification state machine.
[SCSI] bfa: Added firmware save clear feature for BFA driver.
[SCSI] bfa: FCS authentication related changes.
[SCSI] bfa: PCI VPD, FIP and include file changes.
[SCSI] bfa: Fix to copy fpma MAC when requested by user space application.
[SCSI] bfa: RPORT state machine: direct attach mode fix.
...
Linus Torvalds [Thu, 18 Mar 2010 23:52:46 +0000 (16:52 -0700)]
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: (35 commits)
perf: Fix unexported generic perf_arch_fetch_caller_regs
perf record: Don't try to find buildids in a zero sized file
perf: export perf_trace_regs and perf_arch_fetch_caller_regs
perf, x86: Fix hw_perf_enable() event assignment
perf, ppc: Fix compile error due to new cpu notifiers
perf: Make the install relative to DESTDIR if specified
kprobes: Calculate the index correctly when freeing the out-of-line execution slot
perf tools: Fix sparse CPU numbering related bugs
perf_event: Fix oops triggered by cpu offline/online
perf: Drop the obsolete profile naming for trace events
perf: Take a hot regs snapshot for trace events
perf: Introduce new perf_fetch_caller_regs() for hot regs snapshot
perf/x86-64: Use frame pointer to walk on irq and process stacks
lockdep: Move lock events under lockdep recursion protection
perf report: Print the map table just after samples for which no map was found
perf report: Add multiple event support
perf session: Change perf_session post processing functions to take histogram tree
perf session: Add storage for seperating event types in report
perf session: Change add_hist_entry to take the tree root instead of session
perf record: Add ID and to recorded event data when recording multiple events
...
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (30 commits)
Btrfs: fix the inode ref searches done by btrfs_search_path_in_tree
Btrfs: allow treeid==0 in the inode lookup ioctl
Btrfs: return keys for large items to the search ioctl
Btrfs: fix key checks and advance in the search ioctl
Btrfs: buffer results in the space_info ioctl
Btrfs: use __u64 types in ioctl.h
Btrfs: fix search_ioctl key advance
Btrfs: fix gfp flags masking in the compression code
Btrfs: don't look at bio flags after submit_bio
btrfs: using btrfs_stack_device_id() get devid
btrfs: use memparse
Btrfs: add a "df" ioctl for btrfs
Btrfs: cache the extent state everywhere we possibly can V2
Btrfs: cache ordered extent when completing io
Btrfs: cache extent state in find_delalloc_range
Btrfs: change the ordered tree to use a spinlock instead of a mutex
Btrfs: finish read pages in the order they are submitted
btrfs: fix btrfs_mkdir goto for no free objectids
Btrfs: flush data on snapshot creation
Btrfs: make df be a little bit more understandable
...
Linus Torvalds [Thu, 18 Mar 2010 23:50:09 +0000 (16:50 -0700)]
Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
NFS: ensure bdi_unregister is called on mount failure.
NFS: Avoid a deadlock in nfs_release_page
NFSv4: Don't ignore the NFS_INO_REVAL_FORCED flag in nfs_revalidate_inode()
nfs4: Make the v4 callback service hidden
nfs: fix unlikely memory leak
rpc client can not deal with ENOSOCK, so translate it into ENOCONN
Linus Torvalds [Thu, 18 Mar 2010 23:49:24 +0000 (16:49 -0700)]
Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
ahci: pp->active_link is not reliable when FBS is enabled
ahci: use BIOS date in broken_suspend list
ahci: add missing nv IDs
Linus Torvalds [Thu, 18 Mar 2010 23:48:19 +0000 (16:48 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
sound: sequencer: clean up remove bogus check
ALSA: hda: Use LPIB and 6stack-dig for eMachines T5212
ALSA: hda - Disable MSI for Nvidia controller
ALSA: hda - Add PCI quirks for MSI NetOn AP1900 and Wind Top AE2220
ALSA: hda - Fix secondary ADC of ALC260 basic model
ALSA: hda - Add an error message for invalid mapping NID
ALSA: hda - New Intel HDA controller
Linus Torvalds [Thu, 18 Mar 2010 23:47:04 +0000 (16:47 -0700)]
Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds
* 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds:
leds: Fix race between LED device uevent and actual attributes creation
leds-gpio: fix default state handling on OF platforms
leds: Add Dell Business Class Netbook LED driver
leds: Kconfig cleanup
leds: led-class.c - Quiet boot messages
leds: make PCI device id constant
leds: ALIX2: Add dependency to !GPIO_CS5335
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (39 commits)
gigaset: fix build failure
bridge: Make first arg to deliver_clone const.
bridge br_multicast: Don't refer to BR_INPUT_SKB_CB(skb)->mrouters_only without IGMP snooping.
route: Fix caught BUG_ON during rt_secret_rebuild_oneshot()
bridge br_multicast: Fix skb leakage in error path.
bridge br_multicast: Fix handling of Max Response Code in IGMPv3 message.
NET: netpoll, fix potential NULL ptr dereference
tipc: fix lockdep warning on address assignment
l2tp: Fix UDP socket reference count bugs in the pppol2tp driver
smsc95xx: wait for PHY to complete reset during init
l2tp: Fix oops in pppol2tp_xmit
smsc75xx: SMSC LAN75xx USB gigabit ethernet adapter driver
ne: Do not use slashes in irq name string
NET: ksz884x, fix lock imbalance
gigaset: correct range checking off by one error
bridge: Fix br_forward crash in promiscuous mode
bridge: Move NULL mdb check into br_mdb_ip_get
ISDN: Add PCI ID for HFC-2S/4S Beronet Card PCIe
net-2.6 [Bug-Fix][dccp]: fix oops caused after failed initialisation
myri: remove dead code
...
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sunxvr1000: Add missing FB=y depenency.
MAINTAINERS: Add entry for sparc serial drivers.
drivers/serial/sunsab.c: adjust the constant used to initialize the interrupt_mask0 fields
Linus Torvalds [Thu, 18 Mar 2010 18:04:59 +0000 (11:04 -0700)]
Merge branch 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
* 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6:
PCMCIA: resource, fix lock imbalance
pcmcia: add important if statement
pcmcia: re-route Cardbus IRQ to ISA on ti1130 bridges if necessary
pcmcia: allow for cb_irq to differ from pci_dev's irq in yenta_socket
pcmcia: honor saved flags in yenta_socket's I365_CSCINT register
pcmcia: revert "irq probe can be done without risking an IRQ storm"
pcmcia: pd6729, i82092: use parent (PCI) resources
pcmcia/vrc4171: use local spinlock for device local lock.
Chris Mason [Thu, 18 Mar 2010 16:23:10 +0000 (12:23 -0400)]
Btrfs: fix the inode ref searches done by btrfs_search_path_in_tree
This is used by the inode lookup ioctl to follow all the backrefs up
to the subvol root. But the search being done would sometimes land one
past the last item in the leaf instead of finding the backref.
This changes the search to look for the highest possible backref and hop
back one item. It also fixes a leaked path on failure to find the root.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 18 Mar 2010 16:17:05 +0000 (12:17 -0400)]
Btrfs: allow treeid==0 in the inode lookup ioctl
When a root id of 0 is sent to the inode lookup ioctl, it will
use the root of the file we're ioctling and pass the root id
back to userland along with the results.
This allows userland to do searches based on that root later on.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 18 Mar 2010 16:14:54 +0000 (12:14 -0400)]
Btrfs: return keys for large items to the search ioctl
The search ioctl was skipping large items entirely (ones that are too
big for the results buffer). This changes things to at least copy
the item header so that we can send information about the item back to
userland.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Chris Mason [Thu, 18 Mar 2010 16:10:08 +0000 (12:10 -0400)]
Btrfs: fix key checks and advance in the search ioctl
The search ioctl was working well for finding tree roots, but using it for
generic searches requires a few changes to how the keys are advanced.
This treats the search control min fields for objectid, type and offset
more like a key, where we drop the offset to zero once we bump the type,
etc.
The downside of this is that we are changing the min_type and min_offset
fields during the search, and so the ioctl caller needs extra checks to make sure
the keys in the result are the ones it wanted.
This also changes key_in_sk to use btrfs_comp_cpu_keys, just to make
things more readable.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
It's not quite right to do partial name match. Entries in a compatible
list are meant to be matched whole. If a device is compatible with both
"foo" and "foo1", then the device should have both strings in its
"compatible" property.
This patch reverts powerpc and microblaze us to use strcasecmp.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
(for patch description) Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Michal Simek <michal.simek@petalogix.com>
Heiko Carstens [Mon, 15 Mar 2010 04:35:05 +0000 (00:35 -0400)]
memory hotplug/s390: set phys_device
Implement arch specific arch_get_memory_phys_device function and
initialize phys_device for each memory section. That way we finally can
tell which piece of memory belongs to which physical device.
This makes s390's /sys/devices/system/memory/memoryX/phys_device display
the correct thing?
Heiko Carstens [Mon, 15 Mar 2010 04:35:03 +0000 (00:35 -0400)]
memory hotplug: allow setting of phys_device
/sys/devices/system/memory/memoryX/phys_device is supposed to contain the
number of the physical device that the corresponding piece of memory
belongs to.
In case a physical device should be replaced or taken offline for whatever
reason it is necessary to set all corresponding memory pieces offline.
The current implementation always sets phys_device to '0' and there is no
way or hook to change that. Seems like there was a plan to implement that
but it wasn't finished for whatever reason.
So add a weak function which architectures can override to actually set
the phys_device from within add_memory_block().
Akinobu Mita [Mon, 15 Mar 2010 04:35:01 +0000 (00:35 -0400)]
hpet: use for_each_set_bit()
Replace open-coded loop with for_each_set_bit().
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Clemens Ladisch <clemens@ladisch.de> Cc: Bob Picco <bob.picco@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
jffs2: fix up rb_root initializations to use RB_ROOT
jffs2 uses rb_node = NULL; to zero rb_root.
The problem with this is that 17d9ddc72fb8bba0d4f678 ("rbtree: Add
support for augmented rbtrees") in the linux-next tree adds a new field
to that struct which needs to be NULL as well. This patch uses RB_ROOT
as the intializer so all of the relevant fields will be NULL'd.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Eric Paris <eparis@redhat.com> Acked-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
memcg: avoid use cmpxchg in swap cgroup maintainance
swap_cgroup uses 2bytes data and uses cmpxchg in a new operation. 2byte
cmpxchg/xchg is not available on some archs. This patch replaces
cmpxchg/xchg with operations under lock.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reported-by: Sachin Sant <sachinp@in.ibm.com> wrote: Acked-by: Balbir Singh <balbir@in.ibm.com> Acked-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Li Zefan <lizf@cn.fujitsu.com> 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>
Tilman Schmidt [Wed, 17 Mar 2010 21:22:07 +0000 (14:22 -0700)]
gigaset: fix build failure
Update the dummy LL interface to the LL interface change
introduced by commit daab433c03c15fd642c71c94eb51bdd3f32602c8.
This fixes the build failure occurring after that commit when
enabling ISDN_DRV_GIGASET but neither ISDN_I4L nor ISDN_CAPI.
Impact: bugfix Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
Shane Huang [Tue, 16 Mar 2010 10:08:55 +0000 (18:08 +0800)]
ahci: pp->active_link is not reliable when FBS is enabled
pp->active_link is not reliable when FBS is enabled.
Both PORT_SCR_ACT and PORT_CMD_ISSUE should be checked
because mixed NCQ and non-NCQ commands may be in flight.
Signed-off-by: Shane Huang <shane.huang@amd.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Tejun Heo [Tue, 16 Mar 2010 00:50:26 +0000 (09:50 +0900)]
ahci: use BIOS date in broken_suspend list
HP is recycling both DMI_PRODUCT_NAME and DMI_BIOS_VERSION making
ahci_broken_suspend() trigger for later products which are not
affected by the original problems. Match BIOS date instead of version
and add references to bko's so that full information can be found
easier later.
This fixes http://bugzilla.kernel.org/show_bug.cgi?id=15462
Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: tigerfishdaisy@gmail.com Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Tejun Heo [Thu, 11 Mar 2010 02:37:16 +0000 (11:37 +0900)]
ahci: add missing nv IDs
bko#15481 shows that we're missing some NVIDIA ahci PCI IDs. Peer
Chen confirms that IDs 0x580-0x58f are reserved for cases where Linux
ID option is selected in the BIOS and are only used for mcp65-73. Add
0x0581-0x058f.
Vitaliy Gusev [Tue, 16 Mar 2010 01:07:51 +0000 (01:07 +0000)]
route: Fix caught BUG_ON during rt_secret_rebuild_oneshot()
route: Fix caught BUG_ON during rt_secret_rebuild_oneshot()
Call rt_secret_rebuild can cause BUG_ON(timer_pending(&net->ipv4.rt_secret_timer)) in
add_timer as there is not any synchronization for call rt_secret_rebuild_oneshot()
for the same net namespace.
Also this issue affects to rt_secret_reschedule().
Thus use mod_timer enstead.
Signed-off-by: Vitaliy Gusev <vgusev@openvz.org> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Slaby [Tue, 16 Mar 2010 05:29:54 +0000 (05:29 +0000)]
NET: netpoll, fix potential NULL ptr dereference
Stanse found that one error path in netpoll_setup dereferences npinfo
even though it is NULL. Avoid that by adding new label and go to that
instead.
Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Daniel Borkmann <danborkmann@googlemail.com> Cc: David S. Miller <davem@davemloft.net> Acked-by: chavey@google.com Acked-by: Matt Mackall <mpm@selenic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Neil Horman [Tue, 16 Mar 2010 08:14:33 +0000 (08:14 +0000)]
tipc: fix lockdep warning on address assignment
So in the forward porting of various tipc packages, I was constantly
getting this lockdep warning everytime I used tipc-config to set a network
address for the protocol:
[ INFO: possible circular locking dependency detected ]
2.6.33 #1
tipc-config/1326 is trying to acquire lock:
(ref_table_lock){+.-...}, at: [<ffffffffa0315148>] tipc_ref_discard+0x53/0xd4 [tipc]
but task is already holding lock:
(&(&entry->lock)->rlock#2){+.-...}, at: [<ffffffffa03150d5>] tipc_ref_lock+0x43/0x63 [tipc]
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
Finally decided I should fix this. Its a straightforward inversion,
tipc_ref_acquire takes two locks in this order:
ref_table_lock
entry->lock
while tipc_deleteport takes them in this order:
entry->lock (via tipc_port_lock())
ref_table_lock (via tipc_ref_discard())
when the same entry is referenced, we get the above warning. The fix is equally
straightforward. Theres no real relation between the entry->lock and the
ref_table_lock (they just are needed at the same time), so move the entry->lock
aquisition in tipc_ref_acquire down, after we unlock ref_table_lock (this is
safe since the ref_table_lock guards changes to the reference table, and we've
already claimed a slot there. I've tested the below fix and confirmed that it
clears up the lockdep issue
Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
James Chapman [Tue, 16 Mar 2010 06:29:20 +0000 (06:29 +0000)]
l2tp: Fix UDP socket reference count bugs in the pppol2tp driver
This patch fixes UDP socket refcnt bugs in the pppol2tp driver.
A bug can cause a kernel stack trace when a tunnel socket is closed.
A way to reproduce the issue is to prepare the UDP socket for L2TP (by
opening a tunnel pppol2tp socket) and then close it before any L2TP
sessions are added to it. The sequence is
Create UDP socket
Create tunnel pppol2tp socket to prepare UDP socket for L2TP
pppol2tp_connect: session_id=0, peer_session_id=0
L2TP SCCRP control frame received (tunnel_id==0)
pppol2tp_recv_core: sock_hold()
pppol2tp_recv_core: sock_put
L2TP ZLB control frame received (tunnel_id=nnn)
pppol2tp_recv_core: sock_hold()
pppol2tp_recv_core: sock_put
Close tunnel management socket
pppol2tp_release: session_id=0, peer_session_id=0
Close UDP socket
udp_lib_close: BUG
The addition of sock_hold() in pppol2tp_connect() solves the problem.
For data frames, two sock_put() calls were added to plug a refcnt leak
per received data frame. The ref that is grabbed at the top of
pppol2tp_recv_core() must always be released, but this wasn't done for
accepted data frames or data frames discarded because of bad UDP
checksums. This leak meant that any UDP socket that had passed L2TP
data traffic (i.e. L2TP data frames, not just L2TP control frames)
using pppol2tp would not be released by the kernel.
James Chapman [Tue, 16 Mar 2010 06:46:31 +0000 (06:46 +0000)]
l2tp: Fix oops in pppol2tp_xmit
When transmitting L2TP frames, we derive the outgoing interface's UDP
checksum hardware assist capabilities from the tunnel dst dev. This
can sometimes be NULL, especially when routing protocols are used and
routing changes occur. This patch just checks for NULL dst or dev
pointers when checking for netdev hardware assist features.
smsc75xx: SMSC LAN75xx USB gigabit ethernet adapter driver
This patch adds a driver for SMSC's LAN7500 family of USB 2.0
to gigabit ethernet adapters. It's loosely based on the smsc95xx
driver but the device registers for LAN7500 are completely different.
Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Slaby [Tue, 16 Mar 2010 04:53:50 +0000 (04:53 +0000)]
NET: ksz884x, fix lock imbalance
Stanse found that one error path (when alloc_skb fails) in netdev_tx
omits to unlock hw_priv->hwlock. Fix that.
Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Tristram Ha <Tristram.Ha@micrel.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Tilman Schmidt [Tue, 16 Mar 2010 07:04:01 +0000 (07:04 +0000)]
gigaset: correct range checking off by one error
Correct a potential array overrun due to an off by one error in the
range check on the CAPI CONNECT_REQ CIPValue parameter.
Found and reported by Dan Carpenter using smatch.
Impact: bugfix Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
Dave Chinner [Mon, 15 Mar 2010 02:36:35 +0000 (02:36 +0000)]
xfs: don't warn about page discards on shutdown
If we are doing a forced shutdown, we can get lots of noise about
delalloc pages being discarded. This is happens by design during a
forced shutdown, so don't spam the logs with these messages.
Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
Implement XFS's large buffer support with the new vmap APIs. See the vmap
rewrite (db64fe02) for some numbers. The biggest improvement that comes from
using the new APIs is avoiding the global KVA allocation lock on every call.
Signed-off-by: Nick Piggin <npiggin@suse.de> Reviewed-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Only modifications here were a minor reformat, plus making the patch
apply given the new use of xfs_buf_is_vmapped().
Modified-by: Alex Elder <aelder@sgi.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
XFS's vmap batching simply defers a number (up to 64) of vunmaps,
and keeps track of them in a list. To purge the batch, it just goes
through the list and calls vunamp on each one. This is pretty poor:
a global TLB flush is generally still performed on each vunmap, with
the most expensive parts of the operation being the broadcast IPIs
and locking involved in the SMP callouts, and the locking involved
in the vmap management -- none of these are avoided by just batching
up the calls. I'm actually surprised it ever made much difference.
(Now that the lazy vmap allocator is upstream, this description is
not quite right, but the vunmap batching still doesn't seem to do
much).
Rip all this logic out of XFS completely. I will improve vmap
performance and scalability directly in subsequent patch.
Signed-off-by: Nick Piggin <npiggin@suse.de> Reviewed-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
The only change I made was to use the "new" xfs_buf_is_vmapped()
function in a place it had been open-coded in the original.
Modified-by: Alex Elder <aelder@sgi.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
Florian Fainelli [Wed, 10 Mar 2010 17:32:18 +0000 (18:32 +0100)]
leds: Fix race between LED device uevent and actual attributes creation
If we were to dynamically register/unregister leds and have udev or other
daemons handle the leds class uevents, we would be notified of the adding of a
new LED and if the daemon immediately tries to open one of the attributes of
the led device, it would fail with a "no such file or directory" error since
this the attributes are not yet created. Fix this by switching attributes to be
class-wide, such that the driver core will register these attributes with
device_add_attrs and then emit the kobject_uevent ADD signal.
Signed-off-by: Fainelli <ffainelli@freebox.fr> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Properly return backlight registration error to parent.
Mark struct backlight_ops as const.
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org> Acked-by: Harald Welte <laforge@gnumonks.org> (registration failure) Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Check newly registered backlight_device for error and properly
return error to parent
Mark struct backlight_ops as const.
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org> Acked-by: Mike Frysinger <vapier@gentoo.org> (constify struct backlight_ops) Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Anton Vorontsov [Thu, 11 Mar 2010 21:58:47 +0000 (13:58 -0800)]
leds-gpio: fix default state handling on OF platforms
The driver wrongly sets default state for LEDs that don't specify
default-state property.
Currently the driver handles default state this way:
memset(&led, 0, sizeof(led));
for_each_child_of_node(np, child) {
state = of_get_property(child, "default-state", NULL);
if (state) {
if (!strcmp(state, "keep"))
led.default_state = LEDS_GPIO_DEFSTATE_KEEP;
...
}
ret = create_gpio_led(&led, ...);
}
Which means that all LEDs that do not specify default-state will inherit
the last value of the default-state property, which is wrong.
This patch fixes the issue by moving LED's template initialization into
the loop body.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Bob Rodgers [Wed, 17 Feb 2010 21:23:31 +0000 (15:23 -0600)]
leds: Add Dell Business Class Netbook LED driver
This patch adds an LED driver to support the Dell Activity LED on the
Dell Latitude 2100 netbook and future products to come. The Activity LED
is visible externally in the lid so classroom instructors can observe it
from a distance. The driver uses the sysfs led_class and provides a
standard LED interface.
Signed-off by: Bob Rodgers <Robert_Rodgers@dell.com> Signed-off-by: Louis Davis <Louis_Davis@dell.com> Signed-off-by: Jim Dailey <Jim_Dailey@dell.com>, Developers Acked-by: Matthew Garrett <mjg@redhat.com> Acked-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
As each led device gets registered a kernel message gets printed. In
an embedded system with a number of leds this can produce a lot
of output that just looks like noise.
Change the message type to KERN_DEBUG since it might be useful
in the dmesg output "after" booting.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Daniel Mack [Sun, 10 Jan 2010 12:27:54 +0000 (13:27 +0100)]
leds: ALIX2: Add dependency to !GPIO_CS5335
The ALIX2 LED driver and the CS5535 GPIO drivers share the same I/O
range which causes a conflict if they're both enabled. Fix this for now
by adding Kconfig dependencies. While at it, also drop the EXPERIMENTAL
flag, as the code has been around for awhile already.
Note that this is a hack. At some point, a real platform support for
this board should be added which handles the LEDs via the leds-gpio
driver.
Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Matthew Garrett [Wed, 17 Feb 2010 21:39:44 +0000 (16:39 -0500)]
backlight: Allow properties to be passed at registration
Values such as max_brightness should be set before backlights are
registered, but the current API doesn't allow that. Add a parameter to
backlight_device_register and update drivers to ensure that they
set this correctly.
Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Bruno Prémont [Sat, 20 Feb 2010 23:20:01 +0000 (00:20 +0100)]
backlight: Add backlight_device parameter to check_fb
check_fb from backlight_ops lacks a reference to the backlight_device
that's being referred to. Add this parameter so a backlight_device
can be mapped to a single framebuffer, especially if the same driver
handles multiple devices on a single system.
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Stanse found an ommitted pci_dev_puts on error path in progearbl_probe.
pmu_dev and sb_dev are gotten, but never put when
backlight_device_register fails.
So unify fail paths and put the devs when the failure occurs.
Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Richard Purdie [Mon, 18 Jan 2010 14:16:07 +0000 (14:16 +0000)]
backlight: Revert some const qualifiers
9905a43b2d563e6f89e4c63c4278ada03f2ebb14 went a little to far with const
qualifiers as there are legitiment cases where the function pointers
can change (machine specific setup code for example).
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Alberto Panizzo [Fri, 18 Dec 2009 15:42:11 +0000 (16:42 +0100)]
backlight: Add Epson L4F00242T03 LCD driver
The Epson LCD L4F00242T03 is mounted on the Freescale i.MX31 PDK board.
Based upon Marek Vasut work in l4f00242t03.c, this driver provides
basic init and power on/off functionality for this device through the
sysfs lcd interface.
Unfortunately Datasheet for this device are not available and
all the control sequences sent to the display were copied from the
freescale driver that in the i.MX31 Linux BSP.
As in the i.MX31PDK board the core and io suppliers are voltage
regulators, that functionality is embedded here, but not strict.
Signed-off-by: Alberto Panizzo <maramaopercheseimorto@gmail.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Chris Mason [Tue, 16 Mar 2010 19:40:10 +0000 (15:40 -0400)]
Btrfs: buffer results in the space_info ioctl
The space_info ioctl was using copy_to_user inside rcu_read_lock. This
commit changes things to copy into a buffer first and then dump the
result down to userland.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Jiri Slaby [Tue, 16 Mar 2010 14:57:44 +0000 (15:57 +0100)]
PCMCIA: resource, fix lock imbalance
Stanse found that one error path (when alloc_skb fails) in netdev_tx
omits to unlock hw_priv->hwlock. Fix that by moving away from unlock in
each fail path. Unlock at one place instead.
Bruno Prémont [Mon, 15 Mar 2010 18:00:27 +0000 (19:00 +0100)]
HID: avoid '\0' in hid debugfs events file
When dumping /sys/kernel/debug/hid/$device/events '\0' characters show up
(invisible if cat to console but shown by less or while looking at a dump
file). These are due to hid_debug_event() adding strlen()+1 bytes to the ring
buffer (e.g. including the trailing '\0'). Any roll-over causes a '\0' as well
as hid_debug_event() handles the ring buffers with HID_DEBUG_BUFSIZE-1 size
while hid_debug_events_read() handles it with full HID_DEBUG_BUFSIZE size.
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
projects / karo-tx-linux.git / log