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Written by Catalin Marinas, tested by APM on storm platform. This is needed
because of the failures encountered when running SpecWeb benchmark test.
Signed-off-by: Feng Kan <fkan@apm.com>
Acked-by: Kumar Sankaran <ksankaran@apm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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a.out support on ARM requires that argc, argv and envp are passed in
r0-r2 respectively, which requires hacking load_aout_binary to
prevent argc being clobbered by the return code. Whilst mainline kernels
do set the registers up in start_thread, the aout loader has never
carried the hack in mainline.
Initialising the registers in this way actually goes against the libc
expectations for ELF binaries, where argc, argv and envp are passed on
the stack, with r0 being used to hold a pointer to an exit function for
cleaning up after the dynamic linker if required. If the pointer is
NULL, then it is ignored. When execing an ELF binary, Linux currently
zeroes r0, then sets it to argc and then finally clobbers it with the
return value of the execve syscall, so we actually end up with:
r0 = 0
stack[0] = argc
r1 = stack[1] = argv
r2 = stack[2] = envp
libc treats r1 and r2 as undefined. The clobbering of r0 by sys_execve
works for user-spawned threads, but when executing an ELF binary from a
kernel thread (via call_usermodehelper), the execve is performed on the
ret_from_fork path, which restores r0 from the saved pt_regs, resulting
in argc being presented to the C library. This has horrible consequences
when the application exits, since we have an exit function registered
using argc, resulting in a jump to hyperspace.
This patch solves the problem by removing the partial a.out support from
arch/arm/ altogether.
Cc: <stable@vger.kernel.org>
Cc: Ashish Sangwan <ashishsangwan2@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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As of commit b9d4d42ad9 (ARM: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW on
pre-ARMv6 CPUs), the mm switching on VIVT processors is done in the
finish_arch_post_lock_switch() function to avoid whole cache flushing
with interrupts disabled. The need for deferred mm switch is stored as a
thread flag (TIF_SWITCH_MM). However, with preemption enabled, we can
have another thread switch before finish_arch_post_lock_switch(). If the
new thread has the same mm as the previous 'next' thread, the scheduler
will not call switch_mm() and the TIF_SWITCH_MM flag won't be set for
the new thread.
This patch moves the switch pending flag to the mm_context_t structure
since this is specific to the mm rather than thread.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Tested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: <stable@vger.kernel.org> # 3.5+
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Commit 93dc688 (ARM: 7684/1: errata: Workaround for Cortex-A15 erratum 798181 (TLBI/DSB operations)) causes the following undefined instruction error on a mx53 (Cortex-A8):
Internal error: Oops - undefined instruction: 0 [#1] SMP ARM
CPU: 0 PID: 275 Comm: modprobe Not tainted 3.11.0-rc2-next-20130722-00009-g9b0f371 #881
task: df46cc00 ti: df48e000 task.ti: df48e000
PC is at check_and_switch_context+0x17c/0x4d0
LR is at check_and_switch_context+0xdc/0x4d0
This problem happens because check_and_switch_context() calls dummy_flush_tlb_a15_erratum() without checking if we are really running on a Cortex-A15 or not.
To avoid this issue, only call dummy_flush_tlb_a15_erratum() inside
check_and_switch_context() if erratum_a15_798181() returns true, which means that we are really running on a Cortex-A15.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Secondary CPUs write to __boot_cpu_mode with caches disabled, and thus a
cached value of __boot_cpu_mode may be incoherent with that in memory.
This could lead to a failure to detect mismatched boot modes.
This patch adds flushing to ensure that writes by secondaries to
__boot_cpu_mode are made visible before we test against it.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Christoffer Dall <cdall@cs.columbia.edu>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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git://people.freedesktop.org/~danvet/drm-intel into drm-fixes
Brown-paper-bag pull request here. The snb rc6 fix from the last pull
broke forcewake BIOS dirt cleanup, which with fixed. But that fix broke
the spinlock init sequence, which results in an ugly BUG when spinlock
debugging is enabled :( So I get to throw another patch at cc: stable to
fix up the mess ...
* tag 'drm-intel-fixes-2013-07-25' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915: initialize gt_lock early with other spin locks
drm/i915: fix hdmi portclock limits
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into drm-fixes
r600 dpm fixes, old school card dac fixes, lockup fixes
endian fixes
* 'drm-fixes-3.11' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon/dpm: fix r600_enable_sclk_control()
drm/radeon/dpm: implement force performance levels for rv6xx
drm/radeon/dpm: fix displaygap programming on rv6xx
drm/radeon/dpm: fix a typo in the rv6xx mclk setup
drm/radeon: fix combios tables on older cards
drm/radeon: improve dac adjust heuristics for legacy pdac
drm/radeon: Another card with wrong primary dac adj
drm/radeon: fix endian issues with DP handling (v3)
drm/radeon/vm: only align the pt base to 32k
drm/radeon: wait for 3D idle before using CP DMA
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Commit c84deb9d615c02993ce0972a0b34585c7624822f ("fbdev/sgivwfb: use
vm_iomap_memory()") changed sgivwfb_mmap() to use the new
vm_iomap_memory() function. The commit introduced the following
compilation error:
drivers/video/sgivwfb.c:716:9: note: each undeclared identifier is
reported only once for each function it appears in
This patch fixes the error.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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If we forget to do so, we can't send HCMD to firmware while
the NIC is in RFKILL state.
Cc: stable@vger.kernel.org
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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When a not fully started aggregation session is destroyed
and flushed, we get a warning, e.g.
WARNING: at drivers/net/wireless/iwlwifi/pcie/tx.c:1142 iwl_trans_pcie_txq_disable+0x11c/0x160
queue 16 not used
Modules linked in: [...]
Pid: 5135, comm: hostapd Tainted: G W O 3.5.0 #10
Call Trace:
wlan0: driver sets block=0 for sta 00:03:7f:10:44:d3
[<ffffffff81036492>] warn_slowpath_common+0x72/0xa0
[<ffffffff81036577>] warn_slowpath_fmt+0x47/0x50
[<ffffffffa0368d6c>] iwl_trans_pcie_txq_disable+0x11c/0x160 [iwlwifi]
[<ffffffffa03a2099>] iwl_mvm_sta_tx_agg_flush+0xe9/0x150 [iwlmvm]
[<ffffffffa0396c43>] iwl_mvm_mac_ampdu_action+0xf3/0x1e0 [iwlmvm]
[<ffffffffa0293ad3>] ___ieee80211_stop_tx_ba_session+0x193/0x920 [mac80211]
[<ffffffffa0294ed8>] __ieee80211_stop_tx_ba_session+0x48/0x70 [mac80211]
[<ffffffffa029159f>] ieee80211_sta_tear_down_BA_sessions+0x4f/0x80 [mac80211]
[<ffffffffa028a686>] __sta_info_destroy+0x66/0x370 [mac80211]
[<ffffffffa028abb4>] sta_info_destroy_addr_bss+0x44/0x70 [mac80211]
[<ffffffffa02a3e26>] ieee80211_del_station+0x26/0x50 [mac80211]
[<ffffffffa01e6395>] nl80211_del_station+0x85/0x200 [cfg80211]
when a station deauthenticated from us without fully setting
up the aggregation session.
Fix this by checking the aggregation state before removing
the hardware queue.
Cc: stable@vger.kernel.org
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The managed interface PS was not disabled when a GO interface
was added. As a consequence, when the station VMAC was in PS,
the GO also was not on the medium. Fix this.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This allows to clean all kinds of bad state it might be in.
This solves situation where HW RFkill was switched while
the NIC was offline.
Until now, we relied on the firmware to do clean the
interrupt, but new firmwares don't do that any more.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The IRQ handler nuc900fb_irqhandler() use dev_id as a type of
struct nuc900fb_info *, so we should pass fbi as the device
identity to request_irq().
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Wan Zongshun <mcuos.com@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Fix build warning of unused variable:
drivers/video/vga16fb.c:1268:26: warning: unused variable ‘dev’ [-Wunused-variable]
Signed-off-by: Luis Henriques<luis.henriques@canonical.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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regs_phys is phys_addr_t (u32 or u64).
Lets use %pa printk format specifier.
Fixes compilation warning introduced by:
video: xilinxfb: Use drvdata->regs_phys instead of physaddr
(sha1: c88fafef0135e1e1c3e23c3e32ccbeeabc587f81)
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Actually program the correct register to enable
engine clock scaling control.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Allows you to limit the selected power levels via sysfs.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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The device-tree enablement for max8925 has several problems, but besides
the bindings being wrong (and not having seen review) there's also some
bad coding practices on how to fill in the platform_data from device tree.
I came across this since it causes a warning when compiling
mmp2_defconfig, and instead of doing the minimal fix to silence the
warning, I restructured the code a bit.
This silences the warning:
drivers/video/backlight/max8925_bl.c: In function 'max8925_backlight_probe':
drivers/video/backlight/max8925_bl.c:177:3: warning: statement with no effect [-Wunused-value]
Note that the bindings themselves need to be revisited too, but that will
affect more than just the backlight driver and is best done separately;
this just fixes the bad code for the backlight driver.
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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Need to use the driver state rather than the register
state since the displays may not be enabled when the
power state is programmed.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Need to set high for the last two entries. Looks
like a copy and paste typo.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Convert CONFIG_HOTPLUG_PCI from tristate to bool. This only affects
the hotplug core; several of the hotplug drivers can still be modules.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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Hot-removing a device with SR-IOV enabled causes a null pointer dereference
in v3.9 and v3.10.
This is a regression caused by ba518e3c17 ("PCI: pciehp: Iterate over all
devices in slot, not functions 0-7"). When we iterate over the
bus->devices list, we first remove the PF, which also removes all the VFs
from the list. Then the list iterator blows up because more than just the
current entry was removed from the list.
ac205b7bb7 ("PCI: make sriov work with hotplug remove") works around a
similar problem in pci_stop_bus_devices() by iterating over the list in
reverse, so the VFs are stopped and removed from the list first, before the
PF.
This patch changes pciehp_unconfigure_device() to iterate over the list in
reverse, too.
[bhelgaas: bugzilla, changelog]
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=60604
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yijing Wang <wangyijing@huawei.com>
CC: stable@vger.kernel.org # v3.9+
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Add support for the AR9462 chip
T: Bus=02 Lev=02 Prnt=02 Port=04 Cnt=01 Dev#= 4 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=0cf3 ProdID=e003 Rev=00.02
C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: AceLan Kao <acelan.kao@canonical.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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If hci_dev_open() is called after hci_register_dev() added the device to
the hci_dev_list but before the workqueue are created we could run into a
NULL pointer dereference (see below).
This bug is very unlikely to happen, systems using bluetoothd to
manage their bluetooth devices will never see this happen.
BUG: unable to handle kernel NULL pointer dereference
0100
IP: [<ffffffff81077502>] __queue_work+0x32/0x3d0
(...)
Call Trace:
[<ffffffff81077be5>] queue_work_on+0x45/0x50
[<ffffffffa016e8ff>] hci_req_run+0xbf/0xf0 [bluetooth]
[<ffffffffa01709b0>] ? hci_init2_req+0x720/0x720 [bluetooth]
[<ffffffffa016ea06>] __hci_req_sync+0xd6/0x1c0 [bluetooth]
[<ffffffff8108ee10>] ? try_to_wake_up+0x2b0/0x2b0
[<ffffffff8150e3f0>] ? usb_autopm_put_interface+0x30/0x40
[<ffffffffa016fad5>] hci_dev_open+0x275/0x2e0 [bluetooth]
[<ffffffffa0182752>] hci_sock_ioctl+0x1f2/0x3f0 [bluetooth]
[<ffffffff815c6050>] sock_do_ioctl+0x30/0x70
[<ffffffff815c75f9>] sock_ioctl+0x79/0x2f0
[<ffffffff811a8046>] do_vfs_ioctl+0x96/0x560
[<ffffffff811a85a1>] SyS_ioctl+0x91/0xb0
[<ffffffff816d989d>] system_call_fastpath+0x1a/0x1f
Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Add support for the AR3012 chip.
T: Bus=03 Lev=01 Prnt=01 Port=06 Cnt=01 Dev#= 6 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=0cf3 ProdID=3121 Rev=00.02
C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
Signed-off-by: AceLan Kao <acelan.kao@canonical.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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T: Bus=01 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 5 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=13d3 ProdID=3402 Rev= 0.02
S: Manufacturer=Atheros Communications
S: Product=Bluetooth USB Host Controller
S: SerialNumber=Alaska Day 2006
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=59701
Signed-off-by: Sujith Manoharan <sujith@msujith.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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PTR_ERR() returns a signed long type value which is limited by IS_ERR(),
it must be a negative number whose range is [-MAX_ERRNO, 0).
The bug here returns negative numbers as error codes, then check it by
"if (ret < 0)", but -PTR_ERR() is actually positive. The wrong use here
leads to failure as below, even panic.
[ 12.958920] Bluetooth: hci0 command 0xfc8e tx timeout
[ 14.961765] Bluetooth: hci0 command 0xfc8e tx timeout
[ 16.964688] Bluetooth: hci0 command 0xfc8e tx timeout
[ 20.954501] Bluetooth: hci0 sending Intel patch command (0xfc8e) failed (-110)
[ 22.957358] Bluetooth: hci0 command 0xfc8e tx timeout
[ 30.948922] Bluetooth: hci0 sending Intel patch command (0xfc8e) failed (-110)
[ 32.951780] Bluetooth: hci0 command 0xfc8e tx timeout
[ 40.943359] Bluetooth: hci0 sending Intel patch command (0xfc8e) failed (-110)
[ 42.946219] Bluetooth: hci0 command 0xfc8e tx timeout
[ 50.937812] Bluetooth: hci0 sending Intel patch command (0xfc8e) failed (-110)
[ 52.940670] Bluetooth: hci0 command 0xfc8e tx timeout
[ 60.932236] Bluetooth: hci0 sending Intel patch command (0xfc8e) failed (-110)
[ 62.935092] Bluetooth: hci0 command 0xfc8e tx timeout
[ 70.926688] Bluetooth: hci0 sending Intel patch command (0xfc8e) failed (-110)
[ 72.929545] Bluetooth: hci0 command 0xfc8e tx timeout
[ 80.921111] Bluetooth: hci0 sending Intel patch command (0xfc8e) failed (-110)
[ 82.923969] Bluetooth: hci0 command 0xfc2f tx timeout
[ 90.915542] Bluetooth: hci0 sending Intel patch command (0xfc2f) failed (-110)
[ 92.918406] Bluetooth: hci0 command 0xfc11 tx timeout
[ 100.909955] Bluetooth: hci0 sending Intel patch command (0xfc11) failed (-110)
[ 102.912858] Bluetooth: hci0 command 0xfc60 tx timeout
[ 110.904394] Bluetooth: hci0 sending Intel patch command (0xfc60) failed (-110)
[ 112.907293] Bluetooth: hci0 command 0xfc11 tx timeout
[ 120.898831] Bluetooth: hci0 exiting Intel manufacturer mode failed (-110)
[ 120.904757] bluetoothd[1030]: segfault at 4 ip 00007f8b2eb55236 sp 00007fff53ff6920 error 4 in bluetoothd[7f8b2eaff000+cb000]
Signed-off-by: Adam Lee <adam.lee@canonical.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Memory allocated by vmalloc (including stack) can not be used for DMA,
i.e. data pointer on usb_control_msg() should not point to stack memory.
Resolves:
https://bugzilla.redhat.com/show_bug.cgi?id=977558
Reported-and-tested-by: Andy Lawrence <dr.diesel@gmail.com>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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The Fujitsu Lifebook UH552/UH572 ships with a Qualcomm AR9462/AR3012
WLAN/BT-Combo card.
Add device ID to the ath3k driver to enable the bluetooth side of things.
Patch against v3.10.
T: Bus=03 Lev=01 Prnt=01 Port=02 Cnt=01 Dev#= 3 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=04c5 ProdID=1330 Rev=00.02
C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
Signed-off-by: Thomas Loo <tloo@saltstorm.net>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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The length check is invalid since the length varies with type of
info response.
This was introduced by the commit cb3b3152b2f5939d67005cff841a1ca748b19888
Because of this, l2cap info rsp is not handled and command reject is sent.
> ACL data: handle 11 flags 0x02 dlen 16
L2CAP(s): Info rsp: type 2 result 0
Extended feature mask 0x00b8
Enhanced Retransmission mode
Streaming mode
FCS Option
Fixed Channels
< ACL data: handle 11 flags 0x00 dlen 10
L2CAP(s): Command rej: reason 0
Command not understood
Cc: stable@vger.kernel.org
Signed-off-by: Jaganath Kanakkassery <jaganath.k@samsung.com>
Signed-off-by: Chan-Yeol Park <chanyeol.park@samsung.com>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Control transfers have both IN and OUT (or SETUP) packets, so when
clearing TT buffers for a control transfer it's necessary to send
two HUB_CLEAR_TT_BUFFER requests to the hub.
Signed-off-by: William Gulland <wgulland@google.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix memory leaks introduced in commits:
40d133d7f542616cf9538508a372306e626a16e9
usb: gadget: f_ncm: convert to new function interface with backward compatibility
fee562a6450b7806f1fbbe1469a67b5395b5c10a
usb: gadget: f_ecm: convert to new function interface with backward compatibility
fcbdf12ebef73a6069e2a1aada1e546fb578a4aa
usb: gadget: f_phonet: convert to new function interface with backward compatibility
b29002a157940752dfed2c488b2011f63f007d71
usb: gadget: f_eem: convert to new function interface with backward compatibility
8cedba7c73af1369599b1111639cfeb66fe13aaa
usb: gadget: f_subset: convert to new function interface with backward compatibility
f466c6353819326873fa48a02c6f2d7c903240d6
usb: gadget: f_rndis: convert to new function interface with backward compatibility
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Allocated urbs and buffers were never freed on errors in open.
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Some (very few) early devices like mine, where not exposting a proper CDC
descriptor. This was fixed with an immediate firmware update from the vendor,
and pre-installed on newer devices.
So actual devices can be driven by cdc_acm.c + cdc_ether.c.
Signed-off-by: Enrico Mioso <mrkiko.rs@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Speaks AT on interfaces 5 (command & PPP) and 3 (secondary), other
interface protocols are unknown.
Signed-off-by: Dan Williams <dcbw@redhat.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Prevent the option driver from binding itself to the QMI/WWAN interface, making
it unusable by the proper driver.
Signed-off-by: enrico Mioso <mrkiko.rs@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix memory leaks introduced in commits:
40d133d7f542616cf9538508a372306e626a16e9
usb: gadget: f_ncm: convert to new function interface with backward compatibility
fee562a6450b7806f1fbbe1469a67b5395b5c10a
usb: gadget: f_ecm: convert to new function interface with backward compatibility
fcbdf12ebef73a6069e2a1aada1e546fb578a4aa
usb: gadget: f_phonet: convert to new function interface with backward compatibility
b29002a157940752dfed2c488b2011f63f007d71
usb: gadget: f_eem: convert to new function interface with backward compatibility
8cedba7c73af1369599b1111639cfeb66fe13aaa
usb: gadget: f_subset: convert to new function interface with backward compatibility
f466c6353819326873fa48a02c6f2d7c903240d6
usb: gadget: f_rndis: convert to new function interface with backward compatibility
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Fix bugs introduced in
9c62ce83e4258bacc459faf57bf2ed83cce6be08
usb: gadget: ether: convert to new interface of f_ecm
94b5573e97729f0e1496d23b69cbe2c6b24ec0c3
usb: gadget: ether: convert to new interface of f_eem
8af5232d6f48896b151898ccb2e9e155481bb785
usb: gadget: ether: convert to new interface of f_subset
9bd4a10e1bf881af0b0a7c117c7092b558447047
usb: gadget: ether: convert to new interface of f_rndis
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci into usb-linus
Sarah writes:
xhci: Bug fixes, now with more tags!
Hi Greg,
Here's five bug fixes for 3.12.
The three patches are marked for stable. Two fix NULL pointer dereferences.
The third marked for stable suppresses some serious log spam from unnecessary
xHCI driver warnings, whenever an isochronous short packet happens on an xHCI
1.0 host.
The other two patches fix build warnings.
Sarah Sharp
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When we made all inode updates transactional, we no longer needed
the log recovery detection for inodes being newer on disk than the
transaction being replayed - it was redundant as replay of the log
would always result in the latest version of the inode would be on
disk. It was redundant, but left in place because it wasn't
considered to be a problem.
However, with the new "don't read inodes on create" optimisation,
flushiter has come back to bite us. Essentially, the optimisation
made always initialises flushiter to zero in the create transaction,
and so if we then crash and run recovery and the inode already on
disk has a non-zero flushiter it will skip recovery of that inode.
As a result, log recovery does the wrong thing and we end up with a
corrupt filesystem.
Because we have to support old kernel to new kernel upgrades, we
can't just get rid of the flushiter support in log recovery as we
might be upgrading from a kernel that doesn't have fully transactional
inode updates. Unfortunately, for v4 superblocks there is no way to
guarantee that log recovery knows about this fact.
We cannot add a new inode format flag to say it's a "special inode
create" because it won't be understood by older kernels and so
recovery could do the wrong thing on downgrade. We cannot specially
detect the combination of zero mode/non-zero flushiter on disk to
non-zero mode, zero flushiter in the log item during recovery
because wrapping of the flushiter can result in false detection.
Hence that makes this "don't use flushiter" optimisation limited to
a disk format that guarantees that we don't need it. And that means
the only fix here is to limit the "no read IO on create"
optimisation to version 5 superblocks....
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
(cherry picked from commit e60896d8f2b81412421953e14d3feb14177edb56)
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We forgot to free the node itself when free:ing a map.
Reported-by: xulinuxkernel <xulinuxkernel@gmail.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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in some cases where device is attched to xhci port and do not responding,
for example ath9k_htc with stalled firmware, kernel will
crash on ring_doorbell_for_active_rings.
This patch check if pointer exist before it is used.
This patch should be backported to kernels as old as 2.6.35, that
contain the commit e9df17eb1408cfafa3d1844bfc7f22c7237b31b8 "USB: xhci:
Correct assumptions about number of rings per endpoint"
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@vger.kernel.org
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Xhci controllers with hci_version > 0.96 gives spurious success
events on short packet completion. During webcam capture the
"ERROR Transfer event TRB DMA ptr not part of current TD" was observed.
The same application works fine with synopsis controllers hci_version 0.96.
The same issue is seen with Intel Pantherpoint xhci controller. So enabling
this quirk in xhci_gen_setup if controller verion is greater than 0.96.
For xhci-pci move the quirk to much generic place xhci_gen_setup.
Note from Sarah:
The xHCI 1.0 spec changed how hardware handles short packets. The HW
will notify SW of the TRB where the short packet occurred, and it will
also give a successful status for the last TRB in a TD (the one with the
IOC flag set). On the second successful status, that warning will be
triggered in the driver.
Software is now supposed to not assume the TD is not completed until it
gets that last successful status. That means we have a slight race
condition, although it should have little practical impact. This patch
papers over that issue.
It's on my long-term to-do list to fix this race condition, but it is a
much more involved patch that will probably be too big for stable. This
patch is needed for stable to avoid serious log spam.
This patch should be backported to kernels as old as 3.0, that
contain the commit ad808333d8201d53075a11bc8dd83b81f3d68f0b "Intel xhci:
Ignore spurious successful event."
The patch will have to be modified for kernels older than 3.2, since
that kernel added the xhci_gen_setup function for xhci platform devices.
The correct conflict resolution for kernels older than 3.2 is to set
XHCI_SPURIOUS_SUCCESS in xhci_pci_quirks for all xHCI 1.0 hosts.
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@vger.kernel.org
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Fix warning when CONFIG_PCI is not enabled
(from commit 296365781903226a3fb8758901eaeec09d2798e4).
drivers/usb/host/pci-quirks.h: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default]
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Moiz Sonasath <m-sonasath@ti.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
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Resolves the following build warnings:
drivers/usb/host/xhci.c:332:13: warning: 'xhci_msix_sync_irqs' defined but not used [-Wunused-function]
drivers/usb/host/xhci.c:3901:12: warning: 'xhci_change_max_exit_latency' defined but not used [-Wunused-function]
These functions are not always used, and since they're marked static
they will produce build warnings:
- xhci_msix_sync_irqs is only used with CONFIG_PCI.
- xhci_change_max_exit_latency is a little more complicated with
dependencies on CONFIG_PM and CONFIG_PM_RUNTIME.
Instead of building a bigger maze of ifdefs in this code, I've just
marked both with __maybe_unused.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
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When the host controller fails to respond to an Enable Slot command, and
the host fails to respond to the register write to abort the command
ring, the xHCI driver will assume the host is dead, and call
usb_hc_died().
The USB device's slot_id is still set to zero, and the pointer stored at
xhci->devs[0] will always be NULL. The call to xhci_check_args in
xhci_free_dev should have caught the NULL virt_dev pointer.
However, xhci_free_dev is designed to free the xhci_virt_device
structures, even if the host is dead, so that we don't leak kernel
memory. xhci_free_dev checks the return value from the generic
xhci_check_args function. If the return value is -ENODEV, it carries on
trying to free the virtual device.
The issue is that xhci_check_args looks at the host controller state
before it looks at the xhci_virt_device pointer. It will return -ENIVAL
because the host is dead, and xhci_free_dev will ignore the return
value, and happily dereference the NULL xhci_virt_device pointer.
The fix is to make sure that xhci_check_args checks the xhci_virt_device
pointer before it checks the host state.
See https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1203453 for
further details. This patch doesn't solve the underlying issue, but
will ensure we don't see any more NULL pointer dereferences because of
the issue.
This patch should be backported to kernels as old as 3.1, that
contain the commit 7bd89b4017f46a9b92853940fd9771319acb578a "xhci: Don't
submit commands or URBs to halted hosts."
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Reported-by: Vincent Thiele <vincentthiele@gmail.com>
Cc: stable@vger.kernel.org
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commit 181d1b9e31c668259d3798c521672afb8edd355c
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Sun Jul 21 13:16:24 2013 +0200
drm/i915: fix up gt init sequence fallout
moved dev_priv->gt_lock initialization after use. Do the initialization
much earlier with other spin lock initializations.
Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Cc: stable@vger.kernel.org (since the regressing patch is also cc: stable)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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The current regdomain was not always set by the core. This causes
cards with a custom regulatory domain to ignore user initiated changes
if done before the card was registered.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John W. Linville says:
====================
This is another batch of fixes intended for the 3.11 stream. FWIW,
this is the first request with fixes from the mac80211 and iwlwifi
trees as well.
Regarding the mac80211 bits, Johannes says:
"Here I have a fix for RSSI thresholds in mesh, two minstrel fixes from
Felix, an nl80211 fix from Michal and four various fixes I did myself."
As for the iwlwifi bits, Johannes says:
"Here I have a fix for debugfs directory creation (causing a spurious
error message), two scanning fixes from David Spinadel, an LED fix and
two patches related to a BA session problem that eventually caused
firmware crashes from Emmanuel and a small BT fix for older devices as
well as a workaround for a firmware problem with APs with very small
beacon intervals from myself."
Along with those:
Arend van Spriel addresses a lock-up and a NULL pointer dereference
in brcmfmac.
Daniel Drake fixes an unhandled interrupt during device tear down
in mwifiex.
Larry Finger corrects a wil6210 build error.
Oleksij Rempel fixes two ath9k_htc problems related to keeping the
driver and firmware in sync.
Solomon Peachy gives us a cw1200 fix to avoid an oops in monitor mode.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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If a device in a RAID4/5/6 is being replaced while another is being
recovered, then the writes to the replacement device currently don't
happen, resulting in corruption when the replacement completes and the
new drive takes over.
This is because the replacement writes are only triggered when
's.replacing' is set and not when the similar 's.sync' is set (which
is the case during resync and recovery - it means all devices need to
be read).
So schedule those writes when s.replacing is set as well.
In this case we cannot use "STRIPE_INSYNC" to record that the
replacement has happened as that is needed for recording that any
parity calculation is complete. So introduce STRIPE_REPLACED to
record if the replacement has happened.
For safety we should also check that STRIPE_COMPUTE_RUN is not set.
This has a similar effect to the "s.locked == 0" test. The latter
ensure that now IO has been flagged but not started. The former
checks if any parity calculation has been flagged by not started.
We must wait for both of these to complete before triggering the
'replace'.
Add a similar test to the subsequent check for "are we finished yet".
This possibly isn't needed (is subsumed in the STRIPE_INSYNC test),
but it makes it more obvious that the REPLACE will happen before we
think we are finished.
Finally if a NeedReplace device is not UPTODATE then that is an
error. We really must trigger a warning.
This bug was introduced in commit 9a3e1101b827a59ac9036a672f5fa8d5279d0fe2
(md/raid5: detect and handle replacements during recovery.)
which introduced replacement for raid5.
That was in 3.3-rc3, so any stable kernel since then would benefit
from this fix.
Cc: stable@vger.kernel.org (3.3+)
Reported-by: qindehua <13691222965@163.com>
Tested-by: qindehua <qindehua@163.com>
Signed-off-by: NeilBrown <neilb@suse.de>
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