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2011-11-21usb_storage: don't use set_freezable_with_signal()Tejun Heo
The current implementation of set_freezable_with_signal() is buggy and tricky to get right. usb-storage is the only user and its use can be avoided trivially. All usb-storage wants is to be able to sleep with timeout and get woken up if freezing() becomes true. This can be trivially implemented by doing interruptible wait w/ freezing() included in the wait condition. There's no reason to use set_freezable_with_signal(). Perform interruptible wait on freezing() instead of using set_freezable_with_signal(), which is scheduled for removal. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Seth Forshee <seth.forshee@canonical.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Greg Kroah-Hartman <gregkh@suse.de>
2011-11-21freezer: implement and use kthread_freezable_should_stop()Tejun Heo
Writeback and thinkpad_acpi have been using thaw_process() to prevent deadlock between the freezer and kthread_stop(); unfortunately, this is inherently racy - nothing prevents freezing from happening between thaw_process() and kthread_stop(). This patch implements kthread_freezable_should_stop() which enters refrigerator if necessary but is guaranteed to return if kthread_stop() is invoked. Both thaw_process() users are converted to use the new function. Note that this deadlock condition exists for many of freezable kthreads. They need to be converted to use the new should_stop or freezable workqueue. Tested with synthetic test case. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Henrique de Moraes Holschuh <ibm-acpi@hmh.eng.br> Cc: Jens Axboe <axboe@kernel.dk> Cc: Oleg Nesterov <oleg@redhat.com>
2011-11-21freezer: unexport refrigerator() and update try_to_freeze() slightlyTejun Heo
There is no reason to export two functions for entering the refrigerator. Calling refrigerator() instead of try_to_freeze() doesn't save anything noticeable or removes any race condition. * Rename refrigerator() to __refrigerator() and make it return bool indicating whether it scheduled out for freezing. * Update try_to_freeze() to return bool and relay the return value of __refrigerator() if freezing(). * Convert all refrigerator() users to try_to_freeze(). * Update documentation accordingly. * While at it, add might_sleep() to try_to_freeze(). Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Samuel Ortiz <samuel@sortiz.org> Cc: Chris Mason <chris.mason@oracle.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Steven Whitehouse <swhiteho@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jan Kara <jack@suse.cz> Cc: KONISHI Ryusuke <konishi.ryusuke@lab.ntt.co.jp> Cc: Christoph Hellwig <hch@infradead.org>
2011-11-21freezer: don't unnecessarily set PF_NOFREEZE explicitlyTejun Heo
Some drivers set PF_NOFREEZE in their kthread functions which is completely unnecessary and racy - some part of freezer code doesn't consider cases where PF_NOFREEZE is set asynchronous to freezer operations. In general, there's no reason to allow setting PF_NOFREEZE explicitly. Remove them and change the documentation to note that setting PF_NOFREEZE directly isn't allowed. -v2: Dropped change to twl4030-irq.c as it no longer uses PF_NOFREEZE. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: "Gustavo F. Padovan" <padovan@profusion.mobi> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Cc: Marcel Holtmann <marcel@holtmann.org> Cc: wwang <wei_wang@realsil.com.cn>
2011-11-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (86 commits) ipv4: fix redirect handling ping: dont increment ICMP_MIB_INERRORS sky2: fix hang in napi_disable sky2: enforce minimum ring size bonding: Don't allow mode change via sysfs with slaves present f_phonet: fix page offset of first received fragment stmmac: fix pm functions avoiding sleep on spinlock stmmac: remove spin_lock in stmmac_ioctl. stmmac: parameters auto-tuning through HW cap reg stmmac: fix advertising 1000Base capabilties for non GMII iface stmmac: use mdelay on timeout of sw reset sky2: version 1.30 sky2: used fixed RSS key sky2: reduce default Tx ring size sky2: rename up/down functions sky2: pci posting issues sky2: fix hang on shutdown (and other irq issues) r6040: fix check against MCRO_HASHEN bit in r6040_multicast_list MAINTAINERS: change email address for shemminger pch_gbe: Move #include of module.h ...
2011-11-20Merge branch 'fixes' of ↵Linus Torvalds
http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm * 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: ARM: wire up process_vm_writev and process_vm_readv syscalls ARM: 7160/1: setup: avoid overflowing {elf,arch}_name from proc_info_list ARM: 7158/1: add new MFP implement for NUC900 ARM: 7157/1: fix a building WARNING for nuc900 ARM: 7156/1: l2x0: fix compile error on !CONFIG_USE_OF ARM: 7155/1: arch.h: Declare 'pt_regs' locally ARM: 7154/1: mach-bcmring: fix build error in dma.c ARM: 7153/1: mach-bcmring: fix build error in core.c ARM: 7152/1: distclean: Remove generated .dtb files ARM: 7150/1: Allow kernel unaligned accesses on ARMv6+ processors ARM: 7149/1: spi/pl022: Enable clock in probe Revert "ARM: 7098/1: kdump: copy kernel relocation code at the kexec prepare stage"
2011-11-20Merge branch 'pm-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm * 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM / Suspend: Fix bug in suspend statistics update PM / Hibernate: Fix the early termination of test modes PM / shmobile: Fix build of sh7372_pm_init() for CONFIG_PM unset PM Sleep: Do not extend wakeup paths to devices with ignore_children set PM / driver core: disable device's runtime PM during shutdown PM / devfreq: correct Kconfig dependency PM / devfreq: fix use after free in devfreq_remove_device PM / shmobile: Avoid restoring the INTCS state during initialization PM / devfreq: Remove compiler error after irq.h update PM / QoS: Properly use the WARN() macro in dev_pm_qos_add_request() PM / Clocks: Only disable enabled clocks in pm_clk_suspend() ARM: mach-shmobile: sh7372 A3SP no_suspend_console fix PM / shmobile: Don't skip debugging output in pd_power_up()
2011-11-19Merge branch 'hwmon-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (exynos4_tmu) Fix Kconfig dependency [ Merging code in-flight, just because I can. What timezone should I use? - Linus ]
2011-11-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ideLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide: cy82c693: fix PCI device selection icside: DMA support fix IDE: Don't powerdown Compaq Triflex IDE device on suspend piix: ICH7 MWDMA1 errata
2011-11-18Merge branch 'stable/for-linus-fixes-3.2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen * 'stable/for-linus-fixes-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen-gntalloc: signedness bug in add_grefs() xen-gntalloc: integer overflow in gntalloc_ioctl_alloc() xen-gntdev: integer overflow in gntdev_alloc_map() xen:pvhvm: enable PVHVM VCPU placement when using more than 32 CPUs. xen/balloon: Avoid OOM when requesting highmem xen: Remove hanging references to CONFIG_XEN_PLATFORM_PCI xen: map foreign pages for shared rings by updating the PTEs directly
2011-11-18Merge branch 'for-linus' of git://git.kernel.dk/linux-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-block: block: add missed trace_block_plug paride: fix potential information leak in pg_read() bio: change some signed vars to unsigned block: avoid unnecessary plug list flush cciss: auto engage SCSI mid layer at driver load time loop: cleanup set_status interface include/linux/bio.h: use a static inline function for bio_integrity_clone() loop: prevent information leak after failed read block: Always check length of all iov entries in blk_rq_map_user_iov() The Windows driver .inf disables ASPM on all cciss devices. Do the same. backing-dev: ensure wakeup_timer is deleted block: Revert "[SCSI] genhd: add a new attribute "alias" in gendisk"
2011-11-18Merge branch 'unicore32' of git://github.com/gxt/linuxLinus Torvalds
* 'unicore32' of git://github.com/gxt/linux: unicore32, exec: remove redundant set_fs(USER_DS) unicore32: Fix typo 'PUV3_I2C' unicore32: drop unused Kconfig symbols rtc: rtc-puv3: Add __devinit and __devexit markers for probe and remove arch/unicore32: do not use EXTRA_AFLAGS or EXTRA_CFLAGS unicore32: fix build error for find bitops
2011-11-18Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc/signal32: Fix sigset_t conversion when copying to user powerpc: Fix atomic_xxx_return barrier semantics powerpc: Remove buggy 9-year-old test for binutils < 2.12.1 powerpc/book3e-64: Fix debug support for userspace powerpc: Remove extraneous CONFIG_PPC_ADV_DEBUG_REGS define powerpc: Revert show_regs() define for readability powerpc/ps3: Fix SMP lockdep boot warning powerpc/ps3: Fix lost SMP IPIs powerpc: Add hvcall.h include to book3s_hv.c powerpc/trace: Add a dummy stack frame for trace_hardirqs_off powerpc: Copy down exception vectors after feature fixups powerpc: panic if we can't instantiate RTAS powerpc/4xx: Fix typos in kexec config dependencies powerpc/fsl: MCU_MPC8349EMITX wants I2C built-in, modular won't do... powerpc/fsl_udc_core: Fix dumb typo carma-fpga: Missed switch from of_register_platform_driver() powerpc: Fix build breakage in jump_label.c
2011-11-17sky2: fix hang in napi_disablestephen hemminger
If IRQ was never initialized, then calling napi_disable() would hang. Add more bookkeeping to track whether IRQ was ever initialized. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-17sky2: enforce minimum ring sizestephen hemminger
The hardware has a restriction that the minimum ring size possible is 128. The number of elements used is controlled by tx_pending and the overall number of elements in the ring tx_ring_size, therefore it is okay to limit the number of elements in use to a small value (63) but still provide a bigger ring. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-17bonding: Don't allow mode change via sysfs with slaves presentVeaceslav Falico
When changing mode via bonding's sysfs, the slaves are not initialized correctly. Forbid to change modes with slaves present to ensure that every slave is initialized correctly via bond_enslave(). Signed-off-by: Veaceslav Falico <vfalico@redhat.com> Signed-off-by: Andy Gospodarek <andy@greyhouse.net> Acked-by: Nicolas de Pesloüan <nicolas.2p.debian@free.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-17Merge branch 'for-davem' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
2011-11-17f_phonet: fix page offset of first received fragmentRémi Denis-Courmont
We pull one byte (the MAC header) from the first fragment before the fragment is actually appended. So the socket buffer length is 1, not 0. Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-17PM Sleep: Do not extend wakeup paths to devices with ignore_children setRafael J. Wysocki
Commit 4ca46ff3e0d8c234cb40ebb6457653b59584426c (PM / Sleep: Mark devices involved in wakeup signaling during suspend) introduced the power.wakeup_path field in struct dev_pm_info to mark devices whose children are enabled to wake up the system from sleep states, so that power domains containing the parents that provide their children with wakeup power and/or relay their wakeup signals are not turned off. Unfortunately, that introduced a PM regression on SH7372 whose power consumption in the system "memory sleep" state increased as a result of it, because it prevented the power domain containing the I2C controller from being turned off when some children of that controller were enabled to wake up the system, although the controller was not necessary for them to signal wakeup. To fix this issue use the observation that devices whose power.ignore_children flag is set for runtime PM should be treated analogously during system suspend. Namely, they shouldn't be included in wakeup paths going through their children. Since the SH7372 I2C controller's power.ignore_children flag is set, doing so will restore the previous behavior of that SOC. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-11-17Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
2011-11-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] hpsa: Disable ASPM [SCSI] aacraid: controller hangs if kernel uses non-default ASPM policy [SCSI] mpt2sas: add missing allocation. [SCSI] Silencing 'killing requests for dead queue' [SCSI] fix WARNING: at drivers/scsi/scsi_lib.c:1704
2011-11-17fix typo/thinko in get_random_bytes()Luck, Tony
If there is an architecture-specific random number generator we use it to acquire randomness one "long" at a time. We should put these random words into consecutive words in the result buffer - not just overwrite the first word again and again. Signed-off-by: Tony Luck <tony.luck@intel.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-11-17platform/x86: fix dell-laptop function prototypesRandy Dunlap
Fix build warnings: drivers/platform/x86/dell-laptop.c:592:13: warning: function declaration isn't a prototype drivers/platform/x86/dell-laptop.c:599:13: warning: function declaration isn't a prototype Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Cc: Matthew Garrett <mjg@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-11-17media/staging: fix allyesconfig build errorRandy Dunlap
Fix x86 allyesconfig builds. Builds fail due to a non-static variable named 'debug' in drivers/staging/media/as102: arch/x86/built-in.o:arch/x86/kernel/entry_32.S:1296: first defined here ld: Warning: size of symbol `debug' changed from 90 in arch/x86/built-in.o to 4 in drivers/built-in.o Thou shalt have no non-static identifiers that are named 'debug'. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Cc: Pierrick Hascoet <pierrick.hascoet@abilis.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-11-17hwmon: (exynos4_tmu) Fix Kconfig dependencyDonggeun Kim
Rename dependency of EXYNOS4_TMU in Kconfig to the existing one. Signed-off-by: Donggeun Kim <dg77.kim@samsung.com> Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-11-17stmmac: fix pm functions avoiding sleep on spinlockFrancesco Virlinzi
This patch fixes the pm functions to avoid the system sleeps while a spinlock is taken. Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-17stmmac: remove spin_lock in stmmac_ioctl.Srinivas Kandagatla
This patch removes un-needed spin_lock in stmmac_ioctl while reading and writing mdio registers. While holding spin_lock the code must be atomic, which is not true in this case as both mdiobus_read and writes have mutex locks. Without this patch reading mdio registers via mii-tool results in below BUG: mii-tool -vvv eth0" Using SIOCGMIIPHY=0x8947 BUG: sleeping function called from invalid context at kernel/mutex.c:287 in_atomic(): 1, irqs_disabled(): 0, pid: 614, name: mii-tool 2 locks held by mii-tool/614: #0: (rtnl_mutex){......}, at: [<c01fd80c>] dev_ioctl+0x550/0x674 #1: (&priv->lock){......}, at: [<c01b34ec>] stmmac_ioctl+0x4c/0x78 [<c002ea14>] (unwind_backtrace+0x0/0xcc) from [<c0272c38>] (mutex_lock_nested+0x24/0x35c) [<c0272c38>] (mutex_lock_nested+0x24/0x35c) from [<c01b237c>] (mdiobus_read+0x44/0x70) [<c01b237c>] (mdiobus_read+0x44/0x70) from [<c01b0c64>] (phy_mii_ioctl+0x4c/0x138) [<c01b0c64>] (phy_mii_ioctl+0x4c/0x138) from [<c01b34fc>] (stmmac_ioctl+0x5c/0x78) [<c01b34fc>] (stmmac_ioctl+0x5c/0x78) from [<c01fcec8>] (dev_ifsioc+0x2a4/0x2c8) [<c01fcec8>] (dev_ifsioc+0x2a4/0x2c8) from [<c01fd81c>] (dev_ioctl+0x560/0x674) [<c01fd81c>] (dev_ioctl+0x560/0x674) from [<c00c36e0>] (vfs_ioctl+0x2c/0x8c) [<c00c36e0>] (vfs_ioctl+0x2c/0x8c) from [<c00c4130>] (do_vfs_ioctl+0x530/0x578) [<c00c4130>] (do_vfs_ioctl+0x530/0x578) from [<c00c41ac>] (sys_ioctl+0x34/0x54) [<c00c41ac>] (sys_ioctl+0x34/0x54) from [<c0028aa0>] (ret_fast_syscall+0x0/0x2c) Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-17stmmac: parameters auto-tuning through HW cap regGiuseppe CAVALLARO
New GMAC devices (newer than the databook 3.50a) have the HW capability register that provides which features are actually supported by the hardware. On old devices many information have to be passed through the platform, for example: enhanced descriptor structure, TX COE etc. These are mandatory to properly configure the driver. This remains still valid because the driver has to support old Synopsys devices but now it's also able to override them using the values from the HW capability register if supported. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-17stmmac: fix advertising 1000Base capabilties for non GMII ifaceSrinivas Kandagatla
This patch fixes the way to stop the 1000Base advertising capabilties for non GMII interfaces. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-17stmmac: use mdelay on timeout of sw resetFrancesco Virlinzi
This patch uses an mdelay to manage the timeout on sw reset to be independant of cpu_clk. Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com> Reviewed-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-16sky2: version 1.30stephen hemminger
Update version number. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-16sky2: used fixed RSS keystephen hemminger
Rather than generating a different RSS key on each boot, just use a predetermined value that will map same flow to same value on every device. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-16sky2: reduce default Tx ring sizestephen hemminger
The default Tx ring size for the sky2 driver is quite large and could cause excess buffer bloat for many users. The minimum ring size possible and still allow handling the worst case packet on 64bit platforms is 38 which gets rounded up to a power of 2. But most packets only require a couple of ring elements. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-16sky2: rename up/down functionsstephen hemminger
The code is clearer if the up/down functions are renamed to open/close like other drivers. Purely syntax change. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-16sky2: pci posting issuesstephen hemminger
A couple of the reset and setup paths have possible PCI posting issues. When setting registers, a read is necessary to force the writes to complete. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-16sky2: fix hang on shutdown (and other irq issues)stephen hemminger
There are several problems with recent change to how IRQ's are setup. * synchronize_irq in sky2_shutdown would hang because there was no IRQ setup. * when device was set to down, some IRQ bits left enabled so a hardware error would produce IRQ with no handler * quick link on Optima chip set was enabled without handler * suspend/resume would leave IRQ on with no handler if device was down Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-16r6040: fix check against MCRO_HASHEN bit in r6040_multicast_listFlorian Fainelli
We are checking whether the MCR0_HASHEN bit is set using a logical and instead of bitwise and, fix that. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-16pch_gbe: Move #include of module.hJoe Perches
The first #include must be pch_gbe.h as it does a #define of pr_fmt. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-16bnx2x: cache-in compressed fw imageDmitry Kravkov
Re-request fw from fs may fail for different reasons, once the fw was loaded we won't release it until driver is removed. This also resolves the boot problem when initial fw is located on initrd, but rootfs is still unavailable, in this case device reset will fail due to absence of fw files. Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-16net/cadence: enable by default NET_ATMELJean-Christophe PLAGNIOL-VILLARD
so the defconfig of the atmel continue to have the support of the network as before Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-16qeth: Reduce CPU consumption through less SIGA-r callsEinar Lueck
Patch avoids SIGA-r calls in case of SIGA-r required. It only calls SIGA-r if a threshold of free buffer is reached. CPU consumption is reduced as a consequence. Signed-off-by: Einar Lueck <elelueck@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-16qeth: l3 fix rcu splat in xmitFrank Blaschka
when use dst_get_neighbour to get neighbour, we need rcu_read_lock to protect, since dst_get_neighbour uses rcu_dereference. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-16netiucv: reinsert dev_alloc_name for device namingUrsula Braun
Invocation of dev_alloc_name() is re-inserted, because the created net_device name is used to create the device name for the iucv bus. This device is created before the register_netdev call. Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-16qeth: remove WARN_ON leftoverChristian Borntraeger
The patch "qeth: exploit asynchronous delivery of storage blocks" added a WARN_ON in qeth_schedule_recovery. A device recovery should not cause a kernel warning. This is obviously a debugging left-over that we forgot to remove. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-16qeth: return with -EPERM if sniffing is not enabledUrsula Braun
Without appropriate configuration at the SE, a HiperSockets device cannot be used for sniffing. Setting the sniffer attribute is rejected with -EPERM. Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-16xen-gntalloc: signedness bug in add_grefs()Dan Carpenter
gref->gref_id is unsigned so the error handling didn't work. gnttab_grant_foreign_access() returns an int type, so we can add a cast here, and it doesn't cause any problems. gnttab_grant_foreign_access() can return a variety of errors including -ENOSPC, -ENOSYS and -ENOMEM. CC: stable@kernel.org Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-11-16xen-gntalloc: integer overflow in gntalloc_ioctl_alloc()Dan Carpenter
On 32 bit systems a high value of op.count could lead to an integer overflow in the kzalloc() and gref_ids would be smaller than expected. If the you triggered another integer overflow in "if (gref_size + op.count > limit)" then you'd probably get memory corruption inside add_grefs(). CC: stable@kernel.org Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-11-16xen-gntdev: integer overflow in gntdev_alloc_map()Dan Carpenter
The multiplications here can overflow resulting in smaller buffer sizes than expected. "count" comes from a copy_from_user(). Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-11-16xen/balloon: Avoid OOM when requesting highmemDaniel De Graaf
If highmem pages are requested from the balloon on a system without highmem, the implementation of alloc_xenballooned_pages will allocate all available memory trying to find highmem pages to return. Allow low memory to be returned when highmem pages are requested to avoid this loop. Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-11-16xen: map foreign pages for shared rings by updating the PTEs directlyDavid Vrabel
When mapping a foreign page with xenbus_map_ring_valloc() with the GNTTABOP_map_grant_ref hypercall, set the GNTMAP_contains_pte flag and pass a pointer to the PTE (in init_mm). After the page is mapped, the usual fault mechanism can be used to update additional MMs. This allows the vmalloc_sync_all() to be removed from alloc_vm_area(). Signed-off-by: David Vrabel <david.vrabel@citrix.com> Acked-by: Andrew Morton <akpm@linux-foundation.org> [v1: Squashed fix by Michal for no-mmu case] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
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