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2011-03-04libceph: fix msgr keepalive flagSage Weil1-1/+0
There was some broken keepalive code using a dead variable. Shift to using the proper bit flag. Signed-off-by: Sage Weil <[email protected]>
2011-03-04libceph: fix msgr backoffSage Weil1-0/+1
With commit f363e45f we replaced a bunch of hacky workqueue mutual exclusion logic with the WQ_NON_REENTRANT flag. One pieces of fallout is that the exponential backoff breaks in certain cases: * con_work attempts to connect. * we get an immediate failure, and the socket state change handler queues immediate work. * con_work calls con_fault, we decide to back off, but can't queue delayed work. In this case, we add a BACKOFF bit to make con_work reschedule delayed work next time it runs (which should be immediately). Signed-off-by: Sage Weil <[email protected]>
2011-03-04Merge branch 'master' of ↵John W. Linville1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
2011-03-04Merge branch 'for-linus' of ../linux-2.6-block into block-for-2.6.39/coreTejun Heo8-19/+32
This merge creates two set of conflicts. One is simple context conflicts caused by removal of throtl_scheduled_delayed_work() in for-linus and removal of throtl_shutdown_timer_wq() in for-2.6.39/core. The other is caused by commit 255bb490c8 (block: blk-flush shouldn't call directly into q->request_fn() __blk_run_queue()) in for-linus crashing with FLUSH reimplementation in for-2.6.39/core. The conflict isn't trivial but the resolution is straight-forward. * __blk_run_queue() calls in flush_end_io() and flush_data_end_io() should be called with @force_kblockd set to %true. * elv_insert() in blk_kick_flush() should use %ELEVATOR_INSERT_REQUEUE. Both changes are to avoid invoking ->request_fn() directly from request completion path and closely match the changes in the commit 255bb490c8. Signed-off-by: Tejun Heo <[email protected]>
2011-03-04Mark ptrace_{traceme,attach,detach} staticLinus Torvalds1-3/+0
They are only used inside kernel/ptrace.c, and have been for a long time. We don't want to go back to the bad-old-days when architectures did things on their own, so make them static and private. Signed-off-by: Linus Torvalds <[email protected]>
2011-03-04perf: Add support for supplementary event registersAndi Kleen1-2/+11
Change logs against Andi's original version: - Extends perf_event_attr:config to config{,1,2} (Peter Zijlstra) - Fixed a major event scheduling issue. There cannot be a ref++ on an event that has already done ref++ once and without calling put_constraint() in between. (Stephane Eranian) - Use thread_cpumask for percore allocation. (Lin Ming) - Use MSR names in the extra reg lists. (Lin Ming) - Remove redundant "c = NULL" in intel_percore_constraints - Fix comment of perf_event_attr::config1 Intel Nehalem/Westmere have a special OFFCORE_RESPONSE event that can be used to monitor any offcore accesses from a core. This is a very useful event for various tunings, and it's also needed to implement the generic LLC-* events correctly. Unfortunately this event requires programming a mask in a separate register. And worse this separate register is per core, not per CPU thread. This patch: - Teaches perf_events that OFFCORE_RESPONSE needs extra parameters. The extra parameters are passed by user space in the perf_event_attr::config1 field. - Adds support to the Intel perf_event core to schedule per core resources. This adds fairly generic infrastructure that can be also used for other per core resources. The basic code has is patterned after the similar AMD northbridge constraints code. Thanks to Stephane Eranian who pointed out some problems in the original version and suggested improvements. Signed-off-by: Andi Kleen <[email protected]> Signed-off-by: Lin Ming <[email protected]> Signed-off-by: Peter Zijlstra <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2011-03-04Merge branch 'sched/urgent' into sched/coreIngo Molnar9-19/+33
Merge reason: Add fixes before applying dependent patches. Signed-off-by: Ingo Molnar <[email protected]>
2011-03-04Merge branch 'perf/urgent' into perf/coreIngo Molnar6-10/+31
Merge reason: Pick up updates before queueing up dependent patches. Signed-off-by: Ingo Molnar <[email protected]>
2011-03-03Merge branch 'master' of ↵David S. Miller9-19/+33
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/bnx2x/bnx2x.h
2011-03-03Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2-5/+1
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: kill loop_mutex blktrace: Remove blk_fill_rwbs_rq. block: blk-flush shouldn't call directly into q->request_fn() __blk_run_queue() block: add @force_kblockd to __blk_run_queue() block: fix kernel-doc format for blkdev_issue_zeroout blk-throttle: Do not use kblockd workqueue for throtl work
2011-03-03netlink: kill eff_cap from struct netlink_skb_parmsPatrick McHardy1-1/+0
Netlink message processing in the kernel is synchronous these days, capabilities can be checked directly in security_netlink_recv() from the current process. Signed-off-by: Patrick McHardy <[email protected]> Reviewed-by: James Morris <[email protected]> [chrisw: update to include pohmelfs and uvesafb] Signed-off-by: Chris Wright <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-03-03LSM: Pass -o remount options to the LSMEric Paris1-0/+13
The VFS mount code passes the mount options to the LSM. The LSM will remove options it understands from the data and the VFS will then pass the remaining options onto the underlying filesystem. This is how options like the SELinux context= work. The problem comes in that -o remount never calls into LSM code. So if you include an LSM specific option it will get passed to the filesystem and will cause the remount to fail. An example of where this is a problem is the 'seclabel' option. The SELinux LSM hook will print this word in /proc/mounts if the filesystem is being labeled using xattrs. If you pass this word on mount it will be silently stripped and ignored. But if you pass this word on remount the LSM never gets called and it will be passed to the FS. The FS doesn't know what seclabel means and thus should fail the mount. For example an ext3 fs mounted over loop # mount -o loop /tmp/fs /mnt/tmp # cat /proc/mounts | grep /mnt/tmp /dev/loop0 /mnt/tmp ext3 rw,seclabel,relatime,errors=continue,barrier=0,data=ordered 0 0 # mount -o remount /mnt/tmp mount: /mnt/tmp not mounted already, or bad option # dmesg EXT3-fs (loop0): error: unrecognized mount option "seclabel" or missing value This patch passes the remount mount options to an new LSM hook. Signed-off-by: Eric Paris <[email protected]> Reviewed-by: James Morris <[email protected]>
2011-03-03netlink: kill loginuid/sessionid/sid members from struct netlink_skb_parmsPatrick McHardy1-3/+0
Netlink message processing in the kernel is synchronous these days, the session information can be collected when needed. Signed-off-by: Patrick McHardy <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-03-03blktrace: Remove blk_fill_rwbs_rq.Tao Ma1-1/+0
If we enable trace events to trace block actions, We use blk_fill_rwbs_rq to analyze the corresponding actions in request's cmd_flags, but we only choose the minor 2 bits from it, so most of other flags(e.g, REQ_SYNC) are missing. For example, with a sync write we get: write_test-2409 [001] 160.013869: block_rq_insert: 3,64 W 0 () 258135 + = 8 [write_test] Since now we have integrated the flags of both bio and request, it is safe to pass rq->cmd_flags directly to blk_fill_rwbs and blk_fill_rwbs_rq isn't needed any more. With this patch, after a sync write we get: write_test-2417 [000] 226.603878: block_rq_insert: 3,64 WS 0 () 258135 += 8 [write_test] Signed-off-by: Tao Ma <[email protected]> Acked-by: Jeff Moyer <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2011-03-02dcbnl: add support for retrieving peer configuration - ceeShmulik Ravid1-0/+71
This patch adds the support for retrieving the remote or peer DCBX configuration via dcbnl for embedded DCBX stacks supporting the CEE DCBX standard. Signed-off-by: Shmulik Ravid <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-03-02dcbnl: add support for retrieving peer configuration - ieeeShmulik Ravid1-0/+28
These 2 patches add the support for retrieving the remote or peer DCBX configuration via dcbnl for embedded DCBX stacks. The peer configuration is part of the DCBX MIB and is useful for debugging and diagnostics of the overall DCB configuration. The first patch add this support for IEEE 802.1Qaz standard the second patch add the same support for the older CEE standard. Diff for v2 - the peer-app-info is CEE specific. Signed-off-by: Shmulik Ravid <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-03-02netdevice: make initial group visible to userspaceVlad Dogaru1-3/+3
INIT_NETDEV_GROUP is needed by userspace, move it outside __KERNEL__ guards. Signed-off-by: Vlad Dogaru <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-03-03Merge branch '/tip/perf/filter' of ↵Frederic Weisbecker1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace.git into perf/core
2011-03-02Merge branches 'devel-iommu-mailbox', 'devel-mcbsp', 'devel-board' and ↵Tony Lindgren1-2/+0
'devel-hsmmc' into omap-for-linus Conflicts: arch/arm/mach-omap2/omap_hwmod_44xx_data.c
2011-03-02Merge branch 'devel-cleanup' into omap-for-linusTony Lindgren12-24/+62
Conflicts: arch/arm/mach-omap2/timer-gp.c
2011-03-02mfd: twl4030_codec: Remove unused and duplicate audio_mclk fieldsIlkka Koskinen1-2/+0
audio_mclk can be queried from mfd driver. Therefore, it is not needed in twl4030_codec_audio_data or in twl4030_codec_vibra_data anymore. Signed-off-by: Ilkka Koskinen <[email protected]> Acked-by: Peter Ujfalusi <[email protected]> Acked-by: Mark Brown <[email protected]> Acked-by: Samuel Ortiz <[email protected]> Signed-off-by: Tony Lindgren <[email protected]>
2011-03-02block: Move blk_throtl_exit() call to blk_cleanup_queue()Vivek Goyal1-2/+0
Move blk_throtl_exit() in blk_cleanup_queue() as blk_throtl_exit() is written in such a way that it needs queue lock. In blk_release_queue() there is no gurantee that ->queue_lock is still around. Initially blk_throtl_exit() was in blk_cleanup_queue() but Ingo reported one problem. https://lkml.org/lkml/2010/10/23/86 And a quick fix moved blk_throtl_exit() to blk_release_queue(). commit 7ad58c028652753814054f4e3ac58f925e7343f4 Author: Jens Axboe <[email protected]> Date: Sat Oct 23 20:40:26 2010 +0200 block: fix use-after-free bug in blk throttle code This patch reverts above change and does not try to shutdown the throtl work in blk_sync_queue(). By avoiding call to throtl_shutdown_timer_wq() from blk_sync_queue(), we should also avoid the problem reported by Ingo. blk_sync_queue() seems to be used only by md driver and it seems to be using it to make sure q->unplug_fn is not called as md registers its own unplug functions and it is about to free up the data structures used by unplug_fn(). Block throttle does not call back into unplug_fn() or into md. So there is no need to cancel blk throttle work. In fact I think cancelling block throttle work is bad because it might happen that some bios are throttled and scheduled to be dispatched later with the help of pending work and if work is cancelled, these bios might never be dispatched. Block layer also uses blk_sync_queue() during blk_cleanup_queue() and blk_release_queue() time. That should be safe as we are also calling blk_throtl_exit() which should make sure all the throttling related data structures are cleaned up. Signed-off-by: Vivek Goyal <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2011-03-02msm: mdp: Add support for RGBX 8888 image format.Dima Zavin1-0/+1
Signed-off-by: Dima Zavin <[email protected]> Signed-off-by: Carl Vanderlip <[email protected]> Signed-off-by: David Brown <[email protected]>
2011-03-02block: add @force_kblockd to __blk_run_queue()Tejun Heo1-1/+1
__blk_run_queue() automatically either calls q->request_fn() directly or schedules kblockd depending on whether the function is recursed. blk-flush implementation needs to be able to explicitly choose kblockd. Add @force_kblockd. All the current users are converted to specify %false for the parameter and this patch doesn't introduce any behavior change. stable: This is prerequisite for fixing ide oops caused by the new blk-flush implementation. Signed-off-by: Tejun Heo <[email protected]> Cc: Jan Beulich <[email protected]> Cc: James Bottomley <[email protected]> Cc: [email protected] Signed-off-by: Jens Axboe <[email protected]>
2011-03-02mfd: Don't suspend WM8994 if the CODEC is not suspendedMark Brown1-0/+1
ASoC supports keeping the audio subsysetm active over suspend in order to support use cases such as audio passthrough from a cellular modem with the main CPU suspended. Ensure that we don't power down the CODEC when this is happening by checking to see if VMID is up and skipping suspend and resume when it is. If the CODEC has suspended then it'll turn VMID off before the core suspend() gets called. Signed-off-by: Mark Brown <[email protected]> Signed-off-by: Samuel Ortiz <[email protected]>
2011-03-02libata: remove ATA_FLAG_LPMSergei Shtylyov1-1/+0
Commit 6b7ae9545ad9875a289f4191c0216b473e313cb9 (libata: reimplement link power management) removed the check of ATA_FLAG_LPM but neglected to remove the flag itself. Do it now... Signed-off-by: Sergei Shtylyov <[email protected]> Signed-off-by: Jeff Garzik <[email protected]>
2011-03-02libata: remove ATA_FLAG_NO_LEGACYSergei Shtylyov1-1/+0
All checks of ATA_FLAG_NO_LEGACY have been removed by the commits c791c30670ea61f19eec390124128bf278e854fe ([libata] minor PCI IDE probe fixes and cleanups) and f0d36efdc624beb3d9e29b9ab9e9537bf0f25d5b (libata: update libata core layer to use devres), so I think it's time to finally get rid of this flag... Signed-off-by: Sergei Shtylyov <[email protected]> Signed-off-by: Jeff Garzik <[email protected]>
2011-03-02libata: remove ATA_FLAG_MMIOSergei Shtylyov1-1/+0
Commit 0d5ff566779f894ca9937231a181eb31e4adff0e (libata: convert to iomap) removed all checks of ATA_FLAG_MMIO but neglected to remove the flag itself. Do it now, at last... Signed-off-by: Sergei Shtylyov <[email protected]> Signed-off-by: Jeff Garzik <[email protected]>
2011-03-02libata: remove ATA_FLAG_{SRST|SATA_RESET}Sergei Shtylyov1-2/+0
These flags are marked as obsolete and the checks for them have been removed by commit 294440887b32c58d220fb54b73b7a58079b78f20 (libata-sff: kill unused ata_bus_reset()), so I think it's time to finally get rid of them... Signed-off-by: Sergei Shtylyov <[email protected]> Signed-off-by: Jeff Garzik <[email protected]>
2011-03-02libata: separate error handler into usable componentsJames Bottomley1-0/+2
Right at the moment, the libata error handler is incredibly monolithic. This makes it impossible to use from composite drivers like libsas and ipr which have to handle error themselves in the first instance. The essence of the change is to split the monolithic error handler into two components: one which handles a queue of ata commands for processing and the other which handles the back end of readying a port. This allows the upper error handler fine grained control in calling libsas functions (and making sure they only get called for ATA commands whose lower errors have been fixed up). Signed-off-by: James Bottomley <[email protected]> Signed-off-by: Jeff Garzik <[email protected]>
2011-03-01Merge commit 'v2.6.38-rc6' into for-2.6.39/coreJens Axboe308-2713/+7078
Conflicts: block/cfq-iosched.c Signed-off-by: Jens Axboe <[email protected]>
2011-03-01cfg80211: add a field for the bitrate of the last rx data packet from a stationFelix Fietkau1-0/+3
Also fix a typo in the STATION_INFO_TX_BITRATE description Signed-off-by: Felix Fietkau <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-03-01blk-throttle: Do not use kblockd workqueue for throtl workVivek Goyal1-3/+0
o Dominik Klein reported a system hang issue while doing some blkio throttling testing. https://lkml.org/lkml/2011/2/24/173 o Some tracing revealed that CFQ was not dispatching any more jobs as queue unplug was not happening. And queue unplug was not happening because unplug work was not being called as there was one throttling work on same cpu which as not finished yet. And throttling work had not finished as it was tyring to dispatch a bio to CFQ but all the request descriptors were consume to it was put to sleep. o So basically it is a cyclic dependecny between CFQ unplug work and throtl dispatch work. Tejun suggested that use separate workqueue for such cases. o This patch uses a separate workqueue for throttle related work and does not rely on kblockd workqueue anymore. Cc: [email protected] Reported-by: Dominik Klein <[email protected]> Signed-off-by: Vivek Goyal <[email protected]> Acked-by: Tejun Heo <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2011-03-01dt: eliminate of_platform_driver shim codeGrant Likely1-11/+1
Commit eca393016, "of: Merge of_platform_bus_type with platform_bus_type" added a shim to allow of_platform_drivers to get registers onto the platform bus so that there was time to migrate the existing drivers to the platform_bus_type. This patch removes the shim since there are no more users of the old interface. Signed-off-by: Grant Likely <[email protected]>
2011-03-01HID: Do not create input devices for feature reportsHenrik Rydberg1-1/+1
When the multi input quirk is set, there is a new input device created for every feature report. Since the idea is to present features per hid device, not per input device, revert back to the original report loop and change the feature_mapping() callback to not take the input device as argument. Signed-off-by: Henrik Rydberg <[email protected]> Tested-by: Benjamin Tissoires <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2011-02-28ACPI: Fix build for CONFIG_NET unsetRafael J. Wysocki1-0/+8
Several ACPI drivers fail to build if CONFIG_NET is unset, because they refer to things depending on CONFIG_THERMAL that in turn depends on CONFIG_NET. However, CONFIG_THERMAL doesn't really need to depend on CONFIG_NET, because the only part of it requiring CONFIG_NET is the netlink interface in thermal_sys.c. Put the netlink interface in thermal_sys.c under #ifdef CONFIG_NET and remove the dependency of CONFIG_THERMAL on CONFIG_NET from drivers/thermal/Kconfig. Signed-off-by: Rafael J. Wysocki <[email protected]> Acked-by: Randy Dunlap <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Len Brown <[email protected]> Cc: Stephen Rothwell <[email protected]> Cc: Luming Yu <[email protected]> Cc: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-28percpu: Generic support for this_cpu_cmpxchg_double()Christoph Lameter1-0/+128
Introduce this_cpu_cmpxchg_double(). this_cpu_cmpxchg_double() allows the comparison between two consecutive words and replaces them if there is a match. bool this_cpu_cmpxchg_double(pcp1, pcp2, old_word1, old_word2, new_word1, new_word2) this_cpu_cmpxchg_double does not return the old value (difficult since there are two words) but a boolean indicating if the operation was successful. The first percpu variable must be double word aligned! -tj: Updated to return bool instead of int, converted size check to BUILD_BUG_ON() instead of VM_BUG_ON() and other cosmetic changes. Signed-off-by: Christoph Lameter <[email protected]> Signed-off-by: Tejun Heo <[email protected]>
2011-02-28dt/powerpc: move of_bus_type infrastructure to ibmebusGrant Likely1-6/+0
arch/powerpc/kernel/ibmebus.c is the only remaining user of the of_bus_type support code for initializing the bus and registering drivers. All others have either been switched to the vanilla platform bus or already have their own infrastructure. This patch moves the functionality that ibmebus is using out of drivers/of/{platform,device}.c and into ibmebus.c where it is actually used. Also renames the moved symbols from of_platform_* to ibmebus_bus_* to reflect the actual usage. This patch is part of moving all of the of_platform_bus_type users over to the platform_bus_type. Signed-off-by: Grant Likely <[email protected]>
2011-02-28drivercore/dt: add a match table pointer to struct deviceGrant Likely2-2/+4
Add a new .of_match field to struct device which points at the matching device driver .of_match_table entry when a device is probed via the device tree Signed-off-by: Grant Likely <[email protected]> Acked-by: Greg Kroah-Hartman <[email protected]>
2011-02-28dt: Typo fix.Lennert Buytenhek1-1/+1
Signed-off-by: Lennert Buytenhek <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2011-02-28Merge commit 'v2.6.38-rc6' into devicetree/nextGrant Likely23-61/+138
Conflicts: drivers/spi/pxa2xx_spi_pci.c
2011-02-27netpoll: remove IFF_IN_NETPOLL flagAmerigo Wang1-5/+4
V4: rebase to net-next-2.6 This patch removes the flag IFF_IN_NETPOLL, we don't need it any more since we have netpoll_tx_running() now. Signed-off-by: WANG Cong <[email protected]> Acked-by: Neil Horman <[email protected]> Cc: Herbert Xu <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-02-26genirq: Provide forced interrupt threadingThomas Gleixner1-0/+7
Add a commandline parameter "threadirqs" which forces all interrupts except those marked IRQF_NO_THREAD to run threaded. That's mostly a debug option to allow retrieving better debug data from crashing interrupt handlers. If "threadirqs" is not enabled on the kernel command line, then there is no impact in the interrupt hotpath. Architecture code needs to select CONFIG_IRQ_FORCED_THREADING after marking the interrupts which cant be threaded IRQF_NO_THREAD. All interrupts which have IRQF_TIMER set are implict marked IRQF_NO_THREAD. Also all PER_CPU interrupts are excluded. Forced threading hard interrupts also forces all soft interrupt handling into thread context. When enabled it might slow down things a bit, but for debugging problems in interrupt code it's a reasonable penalty as it does not immediately crash and burn the machine when an interrupt handler is buggy. Some test results on a Core2Duo machine: Cache cold run of: # time git grep irq_desc non-threaded threaded real 1m18.741s 1m19.061s user 0m1.874s 0m1.757s sys 0m5.843s 0m5.427s # iperf -c server non-threaded [ 3] 0.0-10.0 sec 1.09 GBytes 933 Mbits/sec [ 3] 0.0-10.0 sec 1.09 GBytes 934 Mbits/sec [ 3] 0.0-10.0 sec 1.09 GBytes 933 Mbits/sec threaded [ 3] 0.0-10.0 sec 1.09 GBytes 939 Mbits/sec [ 3] 0.0-10.0 sec 1.09 GBytes 934 Mbits/sec [ 3] 0.0-10.0 sec 1.09 GBytes 937 Mbits/sec Signed-off-by: Thomas Gleixner <[email protected]> Cc: Peter Zijlstra <[email protected]> LKML-Reference: <[email protected]>
2011-02-25Merge branch 'pm-fixes' of ↵Linus Torvalds2-11/+16
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 * 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: PM: Make ACPI wakeup from S5 work again when CONFIG_PM_SLEEP is unset
2011-02-25rapidio: fix sysfs config attribute to access 16MB of maint spaceAlexandre Bounine1-1/+3
Fixes sysfs config attribute to allow access to entire 16MB maintenance space of RapidIO devices. Signed-off-by: Alexandre Bounine <[email protected]> Cc: Kumar Gala <[email protected]> Cc: Matt Porter <[email protected]> Cc: Li Yang <[email protected]> Cc: Thomas Moll <[email protected]> Cc: Micha Nelissen <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2011-02-25firmware: Add DMI entry types to the headersMike Waychison1-0/+47
In preparation for the upcoming commits, introduce the DMI entry types to the headers. These type names are based on those specified in the DMTF SMBIOS specification version 2.7.1. Signed-off-by: Mike Waychison <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-02-25USB: fix unsafe USB_SS_MAX_STREAMS() definitionDmitry Torokhov1-1/+1
Macro arguments used in expressions need to be enclosed in parenthesis to avoid unpleasant surprises. Signed-off-by: Dmitry Torokhov <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-02-25USB: serial drivers need to use larger bulk-in buffersAlan Stern1-1/+2
When a driver doesn't know how much data a device is going to send, the buffer size should be at least as big as the endpoint's maxpacket value. The serial drivers don't follow this rule; many of them request only 256-byte bulk-in buffers. As a result, they suffer overflow errors if a high-speed device wants to send a lot of data, because high-speed bulk endpoints are required to have a maxpacket size of 512. This patch (as1450) fixes the problem by using the driver's bulk_in_size value as a minimum, always allocating buffers no smaller than the endpoint's maxpacket size. Signed-off-by: Alan Stern <[email protected]> Tested-by: Flynn Marquardt <[email protected]> CC: <[email protected]> [after .39-rc1 is out] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-02-25genirq: Add IRQF_NO_THREADThomas Gleixner1-1/+3
Some low level interrupts cannot be threaded even when we force thread all interrupt handlers. Add a flag to annotate such interrupts. Add all timer interrupts to this category by default. Signed-off-by: Thomas Gleixner <[email protected]> Cc: Peter Zijlstra <[email protected]> LKML-Reference: <[email protected]>
2011-02-25genirq: Prepare the handling of shared oneshot interruptsThomas Gleixner2-0/+4
For level type interrupts we need to track how many threads are on flight to avoid useless interrupt storms when not all thread handlers have finished yet. Keep track of the woken threads and only unmask when there are no more threads in flight. Yes, I'm lazy and using a bitfield. But not only because I'm lazy, the main reason is that it's way simpler than using a refcount. A refcount based solution would need to keep track of various things like crashing the irq thread, spurious interrupts coming in, disables/enables, free_irq() and some more. The bitfield keeps the tracking simple and makes things just work. It's also nicely confined to the thread code pathes and does not require additional checks all over the place. Signed-off-by: Thomas Gleixner <[email protected]> Cc: Peter Zijlstra <[email protected]> LKML-Reference: <[email protected]>
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