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2010-10-25[S390] cio: add lock to struct channel_pathSebastian Ott
Serialize access to members of struct channel_path with a mutex. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] cio: fix memleak in resume pathSebastian Ott
If a ccwdevice is lost during hibernation and a different ccwdevice is attached to the same subchannel, we will deregister the old ccw device and register the new one. Since deregistration is not allowed in this context, we handle this action later. However, some parts of the registration process for the new device were started anyway, so that the old device structure is no longer accessible. Fix this by deferring both actions to the afterwards scheduled subchannel event. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] cio: remove custom implementation of hex_to_bin()Andy Shevchenko
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] dasd fix dump_sense_dbfStefan Haberland
The dasd_eckd_dump_sense_dbf function uses a macro for s390 debug feature that can handle up to 8 parameters (for the DASD device driver). Fix the function to use only the maximum number of parameters. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] css: fix sparse warningSebastian Ott
fix this sparse warning: drivers/s390/cio/css.c:580:6: warning: symbol 'css_schedule_eval_all_unreg' was not declared. Should it be static? Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] hvc_iucv: do not call iucv_unregister if iucv_register failedHendrik Brueckner
If the iucv_register() functions fails, the error recovery calls iucv_unregister() which might cause the following stack backtrace: (<0000000000100ab2> show_trace+0xee/0x144) <00000000004f1842> panic+0xb6/0x248 <00000000001010a6> die+0x15a/0x16c <000000000011d936> do_no_context+0xa6/0xe4 <00000000004f84dc> do_protection_exception+0x2e8/0x3a4 <0000000000113afc> pgm_exit+0x0/0x14 <00000000004e786e> iucv_unregister+0x5a/0x17c (<00000000004e785e> iucv_unregister+0x4a/0x17c) <000000000076de74> hvc_iucv_init+0x228/0x5dc <00000000001000c2> do_one_initcall+0x3e/0x19c <00000000007524a2> kernel_init+0x28e/0x404 <0000000000105dd6> kernel_thread_starter+0x6/0xc <0000000000105dd0> kernel_thread_starter+0x0/0xc Remove the call to iucv_unregister() and remove the goto label as unregistering is the last step in the hvc_iucv initialization. If iucv_register() fails, simply clean up hvc terminals and free resources. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] cmm: fix crash on case conversionHeiko Carstens
When the cmm module is compiled into the kernel it will crash when writing to the R/O data section. Reason is the lower to upper case conversion of the "sender" module parameter which ignored the fact that the pointer is preinitialized. Introduced with 41b42876 "cmm, smsgiucv_app: convert sender to uppercase" Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] drivers/s390/char: Use static const char arraysJoe Perches
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] switch_to: get rid of prev == next checkHeiko Carstens
schedule() makes sure that prev != next before calling switch_to(). Therefore remove the redundant check. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] switch_to: dont restore/save access & fpu regs for kernel threadsHeiko Carstens
If the previous task was a kernel thread there is no need to save the contents of the fpu and access registers since they aren't used in kernel mode. For the same reason it is not necessary to restore these registers if the next task is a kernel thread. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] Add config option for z196 code generation.Heiko Carstens
Add a kernel config option for the IBM zEnterprise 196. This will produce faster code on newer compilers using the -march=z196 option. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] sysinfo: display capacity adjustment indicatorHeiko Carstens
Display machine capacity adjustment indicator and capacity change reason if available in /proc/sysinfo. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] add z196 instructions to kernel disassemblerMartin Schwidefsky
Add the new instructions introduced with z196 to the kernel disassembler. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] add support for nonquiescing sskeMartin Schwidefsky
Improve performance of the sske operation by using the nonquiescing variant if the affected page has no mappings established. On machines with no support for the new sske variant the mask bit will be ignored. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] store indication fault optimizationMartin Schwidefsky
Use the store indication bit in the translation exception code on page faults to avoid the protection faults that immediatly follow the page fault if the access has been a write. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] cpu hotplug/idle: move cpu_die call to enabled contextHeiko Carstens
There is no difference if cpu_die is called from enabled or disabled context. Except that the fast_gup code might be called via cpu_die -> idle_task_exit -> __mm_drop -> crst_table_free. Which in turn grabs and releases a spinlock using the _bh ops, which is not allowed in irq disabled context, since spin_unlock_bh will unconditionally enable interrupts again. To get rid of the warning emitted by the softirq code just move the code to enabled context. In this case this doesn't fix a bug, we just get rid of a warning. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] lockless get_user_pages_fast()Martin Schwidefsky
Implement get_user_pages_fast without locking in the fastpath on s390. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] set ARCH_HAS_SG_CHAIN for s390Christof Schmitt
Set ARCH_HAS_SG_CHAIN for scatter lists on s390. Without this flag the SCSI code limits the maximum number of segments, so set it to make proper use of the FCP channel hardware. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] standardize Kbuild rulesHeiko Carstens
Introducing this Kbuild file allow us to: make arch/s390/ And thus building all the core part of s390. Same as on other architectures. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] dasd: let recovery cqr inherit flags from failed cqrStefan Weinhuber
The usual way to recover a failed DASD ECKD request (cqr) is to create a new request with an appropriate recovery CCW program. Certain features, e.g. failfast, can be enabled per request and are stored in the requests flags. These flags have to be copied from the failed to the recovery request, to let the recovery request use the same features as the original one. Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25[S390] zero page cache synonymsMartin Schwidefsky
If the zero page is mapped to virtual user space addresses that differ only in bit 2^12 or 2^13 we get L1 cache synonyms which can affect performance. Follow the mips model and use multiple zero pages to avoid the synonyms. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-25uwb: Orphan the UWB and WUSB subsystemsDavid Vrabel
I'm no longer in a position to be the maintainer for the Ultra-Wide Band (UWB) and Ceritified Wireless USB (WUSB) subsystems and no one else has volunteered to take over. Signed-off-by: David Vrabel <david.vrabel@csr.com>
2010-10-25uwb: Remove the WLP subsystem and driversDavid Vrabel
The only Wimedia LLC Protocol (WLP) hardware was an Intel i1480 chip with a beta release of firmware that was never commercially available as a product. This hardware and firmware is no longer available as Intel sold their UWB/WLP IP. I also see little prospect of other WLP capable hardware ever being available. Signed-off-by: David Vrabel <david.vrabel@csr.com>
2010-10-25Blackfin: ppi/spi/twi headers: add missing __BFP undefMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-10-25Blackfin: update defconfigsMike Frysinger
- enable pm for ADI boards - drop security option as no one uses it - enable uninitialized mmap for everyone - disable wireless by default as no one uses it - disable cfq io sched as noop is fine Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-10-25Blackfin: bfin_twi.h: start a common TWI headerMike Frysinger
Start one place for TWI definitions. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-10-25netdev: bfin_mac: push settings to platform resourcesSonic Zhang
Move all the pin settings out of the Kconfig and into the platform resources (MII vs RMII). This clean up also lets us push out the phy settings so that board porters may control the layout. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-10-25Merge branch 'topic/hda' into for-linusTakashi Iwai
2010-10-25ALSA: hda - Disable sticky PCM stream assignment for AD codecsTakashi Iwai
The sticky PCM stream assignment introduced in 2.6.36 kernel seems causing problems on AD codecs. At some time later, the streaming no longer works by unknown reason. A simple workaround is to disable sticky-assignment for these codecs. Tested-by: Vasily Khoruzhick <anarsoul@gmail.com> Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-10-25Merge branch 'topic/asoc' into for-linusTakashi Iwai
Conflicts: arch/powerpc/platforms/85xx/p1022_ds.c
2010-10-25Merge branch 'topic/misc' into for-linusTakashi Iwai
2010-10-25Merge branch 'ec-param' into releaseLen Brown
2010-10-25Merge branch 'pnp-log' into releaseLen Brown
2010-10-25Merge branch 'pnpacpi-invalid-device-id' into releaseLen Brown
2010-10-25Merge branch 'power-refcount' into releaseLen Brown
2010-10-25Merge branch 'cleanup' into releaseLen Brown
2010-10-25Merge branch 'gpe-defer' into releaseLen Brown
2010-10-25Merge branch 'battery' into releaseLen Brown
2010-10-25Merge branch 'acpi_pm_device_sleep_state' into releaseLen Brown
2010-10-25Merge branches 'bugzilla-15807', 'bugzilla-15979-v2' and 'bugzilla-19162' ↵Len Brown
into release
2010-10-25Merge branch 'procfs-cleanup-v2' into releaseLen Brown
2010-10-25Merge branch 'acpica' into releaseLen Brown
Conflicts: drivers/acpi/acpica/aclocal.h Signed-off-by: Len Brown <len.brown@intel.com>
2010-10-24IB/srp: Sync buffer before posting sendDavid Dillow
srp_send_tsk_mgmt() was missing the proper DMA sync calls before posting the buffer to the device. Signed-off-by: David Dillow <dillowda@ornl.gov> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-24IB/srp: Use list_first_entry()Bart Van Assche
Use the list_first_entry() macro in ib_srp instead of open-coding the equivalent, which makes the source code slightly more descriptive. The list_first_entry() macro itself was introduced in kernel 2.6.22. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: David Dillow <dillowda@ornl.gov> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-24IB/srp: Reduce number of BUSY conditionsBart Van Assche
As proposed by the SRP (draft) standard, ib_srp reserves one ring element for SRP_TSK_MGMT requests. This patch makes sure that the SCSI mid-layer never tries to queue more than (SRP request limit) - 1 SCSI commands to ib_srp. This improves performance for targets whose request limit is less than or equal to SRP_NORMAL_REQ_SQ_SIZE by reducing the number of BUSY responses reported by ib_srp to the SCSI mid-layer. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: David Dillow <dillowda@ornl.gov> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-24IB/srp: Eliminate two forward declarationsDavid Dillow
Signed-off-by: David Dillow <dillowda@ornl.gov> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-24Merge branch 'next' into for-linusDmitry Torokhov
2010-10-24Input: wacom - specify Cinitq supported toolsPing Cheng
Cintiq, being a display tablet, doesn't have mouse and associated BTN_s. Make sure we do not specify them when registering Cintiq's input device so that userland can retrieve the exact tool set the device supports. Signed-off-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-10-24Input: ab8500-ponkey - fix IRQ freeing in error pathNicolas Kaiser
Looks like an obvious typo to me. Signed-off-by: Nicolas Kaiser <nikai@nikai.net> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-10-24ACPI: Page based coalescing of I/O remappings optimizationMyron Stowe
This patch optimizes ACPI MMIO remappings by keeping track of the remappings on a PAGE_SIZE granularity. When an ioremap() occurs, the underlying infrastructure works on a 'page' based granularity. As such, an ioremap() request for 1 byte for example, will end up mapping in an entire (PAGE_SIZE) page. Huang Ying took advantage of this in commit 15651291a2f8c11e7e6a42d8bfde7a213ff13262 by checking if subsequent ioremap() requests reside within any of the list's existing remappings still in place, and if so, incrementing a reference count on the existing mapping as opposed to performing another ioremap(). Signed-off-by: Myron Stowe <myron.stowe@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
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