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2012-02-03xen/bootup: During bootup suppress XENBUS: Unable to read cpu stateKonrad Rzeszutek Wilk
When the initial domain starts, it prints (depending on the amount of CPUs) a slew of XENBUS: Unable to read cpu state XENBUS: Unable to read cpu state XENBUS: Unable to read cpu state XENBUS: Unable to read cpu state which provide no useful information - as the error is a valid issue - but not on the initial domain. The reason is that the XenStore is not accessible at that time (it is after all the first guest) so the CPU hotplug watch cannot parse "availability/cpu" attribute. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-02-03tty: fix a build failure on sparcCong Wang
On sparc, there is a build failure: drivers/tty/serial/8250/8250.c:48:21: error: suncore.h: No such file or directory drivers/tty/serial/8250/8250.c:3275: error: implicit declaration of function 'sunserial_register_minors' drivers/tty/serial/8250/8250.c:3305: error: implicit declaration of function 'sunserial_unregister_minors' this is due to commit 9bef3d4197379a995fa80f81950bbbf8d32e9e8b (serial: group all the 8250 related code together) moved these files into 8250/ subdirectory, but forgot to change the reference to drivers/tty/serial/suncore.h. Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-03USB: usbserial: add new PID number (0xa951) to the ftdi driverMilan Kocian
Signed-off-by: Milan Kocian <milon@wq.cz> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-03ath9k: Fix kernel panic during driver initilizationMohammed Shafi Shajakhan
all works need to be initialized before ieee80211_register_hw to prevent mac80211 call backs such as drv_start, drv_config getting started. otherwise we would queue/cancel works before initializing them and it leads to kernel panic. this issue can be recreated with the following script in Chrome laptops with AR928X cards, with background scan running (or) Network manager is running while true do sudo modprobe -v ath9k sleep 3 sudo modprobe -r ath9k sleep 3 done EIP: [<81040a47>] __cancel_work_timer+0xb8/0xe1 SS:ESP 0068:f6be9d70 ---[ end trace 4f86d6139a9900ef ]--- Registered led device: ath9k-phy0 ieee80211 phy0: Atheros AR9280 Rev:2 mem=0xf88a0000, irq=16 Kernel panic - not syncing: Fatal exception Pid: 456, comm: wpa_supplicant Tainted: G D 3.0.13 #1 Call Trace: [<81379e21>] panic+0x53/0x14a [<81004a30>] oops_end+0x73/0x81 [<81004b53>] die+0x4c/0x55 [<81002710>] do_trap+0x7c/0x83 [<81002855>] ? do_bounds+0x58/0x58 [<810028cc>] do_invalid_op+0x77/0x81 [<81040a47>] ? __cancel_work_timer+0xb8/0xe1 [<810489ec>] ? sched_clock_cpu+0x81/0x11f [<8103f809>] ? wait_on_work+0xe2/0xf7 [<8137f807>] error_code+0x67/0x6c [<810300d8>] ? wait_consider_task+0x4ba/0x84c [<81040a47>] ? __cancel_work_timer+0xb8/0xe1 [<810380c9>] ? try_to_del_timer_sync+0x5f/0x67 [<81040a91>] cancel_work_sync+0xf/0x11 [<f88d7b7c>] ath_set_channel+0x62/0x25c [ath9k] [<f88d67d1>] ? ath9k_tx_last_beacon+0x26a/0x85c [ath9k] [<f88d8899>] ath_radio_disable+0x3f1/0x68e [ath9k] [<f90d0edb>] ieee80211_hw_config+0x111/0x116 [mac80211] [<f90dd95c>] __ieee80211_recalc_idle+0x919/0xa37 [mac80211] [<f90dda76>] __ieee80211_recalc_idle+0xa33/0xa37 [mac80211] [<812dbed8>] __dev_open+0x82/0xab Cc: <stable@vger.kernel.org> Cc: Gary Morain <gmorain@google.com> Cc: Paul Stewart <pstew@google.com> Cc: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com> Tested-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-02-03mwifiex: handle association failure case correctlyAmitkumar Karwar
Currently even if association is failed "iw link" shows some information about connected BSS and "Tx timeout" error is seen in dmesg log. This patch fixes below issues in the code to handle assoc failure case correctly. 1) "status" variable in mwifiex_wait_queue_complete() is not correctly updated. Hence driver doesn't inform cfg80211 stack about association failure. 2) During association network queues are stopped but carrier is not cleared, which gives Tx timeout error in failure case Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-02-03ath9k: use WARN_ON_ONCE in ath_rc_get_highest_rixJohn W. Linville
The device seems to survive the issue, so no need to flood the logs about it... Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-02-03Merge tag 'for-3.3-rc3' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus Few fixes for 3.3-rc3, nothing major. Mostly build fixes introduced recently. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-03Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
2012-02-03mfd: Avoid twl6040-codec PLL reconfiguration when not neededPeter Ujfalusi
Do not reconfigure the PLL in case it has been configured already with the requested parameters. In case of different PLL configuration do only the needed changes. This can save considerable amount of time since we can avoid the defined protocol (with delays) for the PLL configuration. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-02-03mfd: Store twl6040-codec mclk configurationPeter Ujfalusi
Store the last used mclk configuration for the PLL. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-02-03IB/srpt: Fix ERR_PTR() vs. NULL checking confusionDan Carpenter
transport_init_session() and target_fabric_configfs_init() don't return NULL pointers, they only return ERR_PTRs or valid pointers. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-02-03ixgbe: Fix typo in ixgbe_common.hMasanari Iida
Correct spelling "packtetbuf_num" to "packetbuf_num" in drivers/net/ethernet/intel/ixgbe/ixgbe_common.h Signed-off-by: Masanari Iida <standby24x7@gmail.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
2012-02-03igbvf: change copyright dateMitch A Williams
Change copyright date to 2012 in the source files. Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Robert E Garrett <robertX.e.garrett@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-02-03ixgbevf: Update copyright noticesGreg Rose
Signed-off-by: Greg Rose <gregory.v.rose@intel.com> Tested-by: Robert E Garrett <robertX.e.garrett@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-02-03ixgbevf: Fix mailbox interrupt ack bugGreg Rose
Remove jump to out label that was skipping over code to replace the ack bit in the mailbox cache variable. This was causing driver mailbox routines that poll for the PF to ack a message to time out which would in turn cause all other mailbox messages to fail. Also replace the mailbox cache variable message indication bit when a message is found so that other functions that choose to poll for a mailbox message from the PF won't miss it. Signed-off-by: Greg Rose <gregory.v.rose@intel.com> Tested-by: Robert E Garrett <robertX.e.garrett@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-02-03ixgbe: make ethtool strings table constStephen Hemminger
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-02-03ixgbe: Add warning when no space left for more MAC filtersGreg Rose
Send message to system log when the VF requests another MAC filter but there is no space left on the device for it. Signed-off-by: Greg Rose <gregory.v.rose@intel.com> Tested-by: Robert E Garrett <robertX.e.garrett@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-02-03ixgbe: update copyright to 2012Don Skidmore
New year so bump the copyright date. Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-02-03drm/radeon: do not continue after error from r600_ib_testMatthijs Kooijman
This return statement got dropped while fixing the conflicts introduced in 7a7e8734ac3. Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-02-03drivers/gpu/drm/drm_ioc32.c: initialize all fieldsJulia Lawall
The c32 structure is allocated on the stack and its idx field is not initialized before copying it to user level. This patch takes the value from the result of the ioctl, as done for the other fields. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-02-03Input: i8042 - add Lenovo Ideapad U455 to 'reset' blacklistIgor Murzov
From 2d5a38a56453421e82428155f4b00303f3fb19b2 Mon Sep 17 00:00:00 2001 From: Igor Murzov <e-mail@date.by> Date: Wed, 1 Feb 2012 03:11:53 +0400 Subject: [PATCH] Input: i8042 - add Lenovo Ideapad U455 to 'reset' blacklist Lenovo Ideapad U455 needs to be in the reset quirk list for its touchpad's proper function. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=40672 Signed-off-by: Igor Murzov <e-mail@date.by> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2012-02-03usb: musb: fix a build error on mipsCong Wang
On mips, we got: drivers/usb/musb/musb_io.h:44: error: conflicting types for 'readsl' arch/mips/include/asm/io.h:529: error: previous definition of 'readsl' was here drivers/usb/musb/musb_io.h:46: error: conflicting types for 'readsw' arch/mips/include/asm/io.h:528: error: previous definition of 'readsw' was here drivers/usb/musb/musb_io.h:48: error: conflicting types for 'readsb' so, should add !defined(CONFIG_MIPS) too. Cc: Felipe Balbi <balbi@ti.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-02-02mmc: cb710 core: Add missing spin_lock_init for irq_lock of struct cb710_chipAxel Lin
Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-02cs5535-mfgpt: don't call __init function from __devinitDanny Kukawka
Fix scan_timers() to be __devinit and not __init since the function get called from cs5535_mfgpt_probe which is __devinit. Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-02vmw_balloon: fix for a -Wuninitialized warningDanny Kukawka
Fix for a -Wuninitialized compiler warning. Changed return value of vmballoon_send_lock_page() from bool to int to be able to distinguish between the error cases to avoid uninitialized use of hv_status in vmballoon_reserve_page() Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-02serial: samsung: Add support for EXYNOS5250Kukjin Kim
Cc: Thomas Abraham <thomas.abraham@linaro.org> Cc: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-02serial: samsung: Add support for EXYNOS4212 and EXYNOS4412Kukjin Kim
This should be added for EXYNOS4212 and EXYNOS4412 SoCs. Cc: Thomas Abraham <thomas.abraham@linaro.org> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: stable <stable@vger.kernel.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-02drivers/tty/vt/vt_ioctl.c: fix KDFONTOP 32bit compatibility layerSamuel Thibault
KDFONTOP(GET) currently fails with EIO when being run in a 32bit userland with a 64bit kernel if the font width is not 8. This is because the compatibility layer introduced by e9216651 ("tty: handle VT specific compat ioctls in vt driver") forces the addition of the KD_FONT_FLAG_OLD flag, which makes con_font_get return EIO in such case. This flag should *not* be set for KDFONTOP, since it's actually the whole point of this flag (see comment in con_font_set for instance). Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Arthur Taylor <art@ified.ca> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-02drivers/base/memory.c: fix memory_dev_init() long delayYinghai Lu
One system with 2048g ram, reported soft lockup on recent kernel. [ 34.426749] cpu_dev_init done [ 61.166399] BUG: soft lockup - CPU#0 stuck for 22s! [swapper/0:1] [ 61.166733] Modules linked in: [ 61.166904] irq event stamp: 1935610 [ 61.178431] hardirqs last enabled at (1935609): [<ffffffff81ce8c05>] mutex_lock_nested+0x299/0x2b4 [ 61.178923] hardirqs last disabled at (1935610): [<ffffffff81cf2bab>] apic_timer_interrupt+0x6b/0x80 [ 61.198767] softirqs last enabled at (1935476): [<ffffffff8106e59c>] __do_softirq+0x195/0x1ab [ 61.218604] softirqs last disabled at (1935471): [<ffffffff81cf359c>] call_softirq+0x1c/0x30 [ 61.238408] CPU 0 [ 61.238549] Modules linked in: [ 61.238744] [ 61.238825] Pid: 1, comm: swapper/0 Not tainted 3.3.0-rc1-tip-yh-02076-g962f689-dirty #171 [ 61.278212] RIP: 0010:[<ffffffff810b3e3a>] [<ffffffff810b3e3a>] lock_release+0x90/0x9c [ 61.278627] RSP: 0018:ffff883f64dbfd70 EFLAGS: 00000246 [ 61.298287] RAX: ffff883f64dc0000 RBX: 0000000000000000 RCX: 000000000000008b [ 61.298690] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 61.318383] RBP: ffff883f64dbfda0 R08: 0000000000000001 R09: 000000000000008b [ 61.338215] R10: 0000000000000000 R11: 0000000000000000 R12: ffff883f64dbfd10 [ 61.338610] R13: ffff883f64dc0708 R14: ffff883f64dc0708 R15: ffffffff81095657 [ 61.358299] FS: 0000000000000000(0000) GS:ffff883f7d600000(0000) knlGS:0000000000000000 [ 61.378118] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 61.378450] CR2: 0000000000000000 CR3: 00000000024af000 CR4: 00000000000007f0 [ 61.398144] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.417918] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 61.418260] Process swapper/0 (pid: 1, threadinfo ffff883f64dbe000, task ffff883f64dc0000) [ 61.445358] Stack: [ 61.445511] 0000000000000002 ffff897f649ba168 ffff883f64dbfe10 ffff88ff64bb57a8 [ 61.458040] 0000000000000000 0000000000000000 ffff883f64dbfdc0 ffffffff81ceb1b4 [ 61.458491] 000000000011608c ffff88ff64bb58a8 ffff883f64dbfdf0 ffffffff81c57638 [ 61.478215] Call Trace: [ 61.478367] [<ffffffff81ceb1b4>] _raw_spin_unlock+0x21/0x2e [ 61.497994] [<ffffffff81c57638>] klist_next+0x9e/0xbc [ 61.498264] [<ffffffff8148ba99>] next_device+0xe/0x1e [ 61.517867] [<ffffffff8148c0cc>] subsys_find_device_by_id+0xb7/0xd6 [ 61.518197] [<ffffffff81498846>] find_memory_block_hinted+0x3d/0x66 [ 61.537927] [<ffffffff8149887f>] find_memory_block+0x10/0x12 [ 61.538193] [<ffffffff814988b6>] add_memory_section+0x35/0x9e [ 61.557932] [<ffffffff827fecef>] memory_dev_init+0x68/0xda [ 61.558227] [<ffffffff827fec01>] driver_init+0x97/0xa7 [ 61.577853] [<ffffffff827cdf3c>] kernel_init+0xf6/0x1c0 [ 61.578140] [<ffffffff81cf34a4>] kernel_thread_helper+0x4/0x10 [ 61.597850] [<ffffffff81ceb59d>] ? retint_restore_args+0xe/0xe [ 61.598144] [<ffffffff827cde46>] ? start_kernel+0x3ab/0x3ab [ 61.617826] [<ffffffff81cf34a0>] ? gs_change+0xb/0xb [ 61.618060] Code: 10 48 83 3b 00 eb e8 4c 89 f2 44 89 fe 4c 89 ef e8 e1 fe ff ff 65 48 8b 04 25 40 bc 00 00 c7 80 cc 06 00 00 00 00 00 00 41 54 9d <5e> 5b 41 5c 41 5d 41 5e 41 5f 5d c3 55 48 89 e5 41 57 41 89 cf [ 89.285380] memory_dev_init done Finally it takes about 55s to create 16400 memory entries. Root cause: for x86_64, 2048g (with 2g hole at [2g,4g), and TOP2 will be 2050g), will have 16400 memory block. find_memory_block/subsys_find_device_by_id will be expensive with that many entries. Actually, we don't need to find that memory block for BOOT path. Skip that finding make it get back to normal. [ 34.466696] cpu_dev_init done [ 35.290080] memory_dev_init done Also solved the delay with topology_init when sections_per_block is not 1. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Nathan Fontenot <nfont@austin.ibm.com> Cc: Robin Holt <holt@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-02Merge branch 'for-linus' of ↵Linus Torvalds
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: rbd: fix safety of rbd_put_client() rbd: fix a memory leak in rbd_get_client() ceph: create a new session lock to avoid lock inversion ceph: fix length validation in parse_reply_info() ceph: initialize client debugfs outside of monc->mutex ceph: change "ceph.layout" xattr to be "ceph.file.layout"
2012-02-03can: peak_pci: Fix the way channels are linked togetherStephane Grosjean
Change the way channels objects are linked together by peak_pci_probe() avoiding any kernel oops when driver is removed. Side effect is that the list is now browsed from last to first channel. Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-02-03can: ems_usb: Removed double netif_device_detachSebastian Haas
netif_device_attched is called twice when ems_usb_start fails with -ENODEV Signed-off-by: Sebastian Haas <dev@sebastianhaas.info> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-02-03can: pch_can: fix error passive level testXi Wang
The test (((errc & PCH_REC) >> 8) > 127) would always be false because the receive error counter ((errc & PCH_REC) >> 8) is at most 127, where PCH_REC is defined as 0x7f00. To test whether the receive error counter has reached the error passive level, the RP bit (15) should be used. Signed-off-by: Xi Wang <xi.wang@gmail.com> Acked-by: Wolfgang Grandegger <wg@grandegger.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-02-03can: ti_hecc: use netif_rx in the interruptWolfgang Grandegger
This patch fixes locking problems by using netif_rx() instead of netif_receive_skb() in ti_hecc_error() called from the interrupt context. Signed-off-by: Wolfgang Grandegger <wg@grandegger.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-02-03can: cc770: Fix indirect access deadlock on ISA cardsWolfgang Zarre
This fix avoids a deadlock if an interrupt occurs during consecutive port operations on ISA cards utilising indirect access via address and data port. Tested on a B&R ISA card. Cc: linux-can@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Wolfgang Zarre <lkdev@essax.com> Acked-by: Wolfgang Grandegger <wg@grandegger.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-02-03can: cc770: store echo skb before starting the transferWolfgang Grandegger
On slow systems and high CAN bitrates, the error message "can_put_echo_skb: BUG! echo_skb is occupied!" did show up because can_put_echo_skb() was called after starting the transfer. Signed-off-by: Wolfgang Grandegger <wg@grandegger.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-02-03can: flexcan: fix irq flooding by clearing all interrupt sourcesWolfgang Grandegger
As pointed out by Reuben Dowle and Lothar Waßmann, the TWRN_INT, RWRN_INT, BOFF_INT interrupt sources need to be cleared as well to avoid interrupt flooding, at least for the Flexcan on i.MX28 SOCs. Furthermore, the interrupts are only cleared, if really one of those interrupt sources are pending (which is not the case for rx and tx done). Cc: Reuben Dowle <Reuben.Dowle@navico.com> Cc: Lothar Waßmann <LW@KARO-electronics.de> Signed-off-by: Wolfgang Grandegger <wg@grandegger.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-02-02rbd: fix safety of rbd_put_client()Alex Elder
The rbd_client structure uses a kref to arrange for cleaning up and freeing an instance when its last reference is dropped. The cleanup routine is rbd_client_release(), and one of the things it does is delete the rbd_client from rbd_client_list. It acquires node_lock to do so, but the way it is done is still not safe. The problem is that when attempting to reuse an existing rbd_client, the structure found might already be in the process of getting destroyed and cleaned up. Here's the scenario, with "CLIENT" representing an existing rbd_client that's involved in the race: Thread on CPU A | Thread on CPU B --------------- | --------------- rbd_put_client(CLIENT) | rbd_get_client() kref_put() | (acquires node_lock) kref->refcount becomes 0 | __rbd_client_find() returns CLIENT calls rbd_client_release() | kref_get(&CLIENT->kref); | (releases node_lock) (acquires node_lock) | deletes CLIENT from list | ...and starts using CLIENT... (releases node_lock) | and frees CLIENT | <-- but CLIENT gets freed here Fix this by having rbd_put_client() acquire node_lock. The result could still be improved, but at least it avoids this problem. Signed-off-by: Alex Elder <elder@dreamhost.com> Signed-off-by: Sage Weil <sage@newdream.net>
2012-02-02IB/srpt: Remove unneeded <linux/version.h> includeJesper Juhl
Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-02-02IB/srpt: Use ARRAY_SIZE() instead of open-codingRoland Dreier
Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-02-02IB/srpt: Use DEFINE_SPINLOCK()/LIST_HEAD()Roland Dreier
Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-02-02rbd: fix a memory leak in rbd_get_client()Alex Elder
If an existing rbd client is found to be suitable for use in rbd_get_client(), the rbd_options structure is not being freed as it should. Fix that. Signed-off-by: Alex Elder <elder@dreamhost.com> Signed-off-by: Sage Weil <sage@newdream.net>
2012-02-02uwb & wusb & usb wireless controllers: fix kconfig error & build errorsRandy Dunlap
Fix kconfig warnings and build errors in UWB/WUSB/USB_HWA etc. by making all of these related symbols depend on UWB. warning: (USB_WHCI_HCD && USB_HWA_HCD) selects USB_WUSB which has unmet direct dependencies (USB_SUPPORT && EXPERIMENTAL && USB && PCI && UWB) warning: (USB_HWA_HCD) selects UWB_HWA which has unmet direct dependencies (UWB && USB) which lead to: ERROR: "uwb_rsv_establish" [drivers/usb/wusbcore/wusbcore.ko] undefined! ERROR: "uwb_pal_register" [drivers/usb/wusbcore/wusbcore.ko] undefined! ERROR: "uwb_rsv_get_usable_mas" [drivers/usb/wusbcore/wusbcore.ko] undefined! ERROR: "uwb_rsv_destroy" [drivers/usb/wusbcore/wusbcore.ko] undefined! ERROR: "uwb_radio_stop" [drivers/usb/wusbcore/wusbcore.ko] undefined! ERROR: "uwb_rsv_terminate" [drivers/usb/wusbcore/wusbcore.ko] undefined! ERROR: "uwb_pal_unregister" [drivers/usb/wusbcore/wusbcore.ko] undefined! ERROR: "uwb_pal_init" [drivers/usb/wusbcore/wusbcore.ko] undefined! ERROR: "uwb_rc_reset_all" [drivers/usb/wusbcore/wusbcore.ko] undefined! ERROR: "uwb_radio_start" [drivers/usb/wusbcore/wusbcore.ko] undefined! ERROR: "uwb_rsv_create" [drivers/usb/wusbcore/wusbcore.ko] undefined! ERROR: "uwb_rc_put" [drivers/usb/host/whci/whci-hcd.ko] undefined! ERROR: "uwb_rc_get_by_grandpa" [drivers/usb/host/whci/whci-hcd.ko] undefined! ERROR: "__umc_driver_register" [drivers/usb/host/whci/whci-hcd.ko] undefined! ERROR: "umc_driver_unregister" [drivers/usb/host/whci/whci-hcd.ko] undefined! ERROR: "whci_wait_for" [drivers/usb/host/whci/whci-hcd.ko] undefined! ERROR: "uwb_rc_get_by_grandpa" [drivers/usb/host/hwa-hc.ko] undefined! ERROR: "uwb_rc_put" [drivers/usb/host/hwa-hc.ko] undefined! Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-02usb: Skip PCI USB quirk handling for Netlogic XLPJayachandran C
The Netlogic XLP SoC's on-chip USB controller appears as a PCI USB device, but does not need the EHCI/OHCI handoff done in usb/host/pci-quirks.c. The pci-quirks.c is enabled for all vendors and devices, and is enabled if USB and PCI are configured. If we do not skip the qurik handling on XLP, the readb() call in ehci_bios_handoff() will cause a crash since byte access is not supported for EHCI registers in XLP. Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com> Cc: stable <stable@vger.kernel.org> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-02powerpc/usb: fix issue of CPU halt when missing USB PHY clockShengzhou Liu
when missing USB PHY clock, kernel booting up will halt during USB initialization. We should check USBGP[PHY_CLK_VALID] bit to avoid CPU hang in this case. Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-02usb: otg: mv_otg: Add dependenceNeil Zhang
This otg driver depends on marvell EHCI driver, so add the dependence. It can fix the following build error on i386: ERROR: "usb_remove_hcd" [drivers/usb/otg/mv_otg.ko] undefined! ERROR: "usb_add_hcd" [drivers/usb/otg/mv_otg.ko] undefined! Signed-off-by: Neil Zhang <zhangwm@marvell.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-02usb: host: Distinguish Kconfig text for Freescale controllersFabio Estevam
Distinguish Kconfig text by providing the Freescale family name. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-02-02net/hyperv: Fix the page buffer when an RNDIS message goes beyond page boundaryHaiyang Zhang
There is a possible data corruption if an RNDIS message goes beyond page boundary in the sending code path. This patch fixes the problem. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-02net/hyperv: Use netif_tx_disable() instead of netif_stop_queue() when necessaryHaiyang Zhang
For code path not on the xmit, use netif_tx_disable() instead of netif_stop_queue() to ensure other CPUs are not doing xmit. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-02drivers/net/ethernet/ti: Move call to PTR_ERR after reassignmentJulia Lawall
PTR_ERR should be called before its argument is cleared. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e,e1; constant c; @@ *e = c ... when != e = e1 when != &e when != true IS_ERR(e) *PTR_ERR(e) // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Reported-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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