- 24 Mar, 2018 32 commits
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Shuah Khan authored
[ Upstream commit f45ce987 ] Driver calls request_firmware() whenever the device is opened for the first time. As the device gets opened and closed, dev->num_inst == 1 is true several times. This is not necessary since the firmware is saved in the fw_buf. s5p_mfc_load_firmware() copies the buffer returned by the request_firmware() to dev->fw_buf. fw_buf sticks around until it gets released from s5p_mfc_remove(), hence there is no need to keep requesting firmware and copying it to fw_buf. This might have been overlooked when changes are made to free fw_buf from the device release interface s5p_mfc_release(). Fix s5p_mfc_load_firmware() to call request_firmware() once and keep state. Change _probe() to load firmware once fw_buf has been allocated. s5p_mfc_open() and it continues to call s5p_mfc_load_firmware() and init hardware which is the step where firmware is written to the device. This addresses the mfc_mutex contention due to repeated request_firmware() calls from open() in the following circular locking warning: [ 552.194115] qtdemux0:sink/2710 is trying to acquire lock: [ 552.199488] (&dev->mfc_mutex){+.+.}, at: [<bf145544>] s5p_mfc_mmap+0x28/0xd4 [s5p_mfc] [ 552.207459] but task is already holding lock: [ 552.213264] (&mm->mmap_sem){++++}, at: [<c01df2e4>] vm_mmap_pgoff+0x44/0xb8 [ 552.220284] which lock already depends on the new lock. [ 552.228429] the existing dependency chain (in reverse order) is: [ 552.235881] -> #2 (&mm->mmap_sem){++++}: [ 552.241259] __might_fault+0x80/0xb0 [ 552.245331] filldir64+0xc0/0x2f8 [ 552.249144] call_filldir+0xb0/0x14c [ 552.253214] ext4_readdir+0x768/0x90c [ 552.257374] iterate_dir+0x74/0x168 [ 552.261360] SyS_getdents64+0x7c/0x1a0 [ 552.265608] ret_fast_syscall+0x0/0x28 [ 552.269850] -> #1 (&type->i_mutex_dir_key#2){++++}: [ 552.276180] down_read+0x48/0x90 [ 552.279904] lookup_slow+0x74/0x178 [ 552.283889] walk_component+0x1a4/0x2e4 [ 552.288222] link_path_walk+0x174/0x4a0 [ 552.292555] path_openat+0x68/0x944 [ 552.296541] do_filp_open+0x60/0xc4 [ 552.300528] file_open_name+0xe4/0x114 [ 552.304772] filp_open+0x28/0x48 [ 552.308499] kernel_read_file_from_path+0x30/0x78 [ 552.313700] _request_firmware+0x3ec/0x78c [ 552.318291] request_firmware+0x3c/0x54 [ 552.322642] s5p_mfc_load_firmware+0x54/0x150 [s5p_mfc] [ 552.328358] s5p_mfc_open+0x4e4/0x550 [s5p_mfc] [ 552.333394] v4l2_open+0xa0/0x104 [videodev] [ 552.338137] chrdev_open+0xa4/0x18c [ 552.342121] do_dentry_open+0x208/0x310 [ 552.346454] path_openat+0x28c/0x944 [ 552.350526] do_filp_open+0x60/0xc4 [ 552.354512] do_sys_open+0x118/0x1c8 [ 552.358586] ret_fast_syscall+0x0/0x28 [ 552.362830] -> #0 (&dev->mfc_mutex){+.+.}: -> #0 (&dev->mfc_mutex){+.+.}: [ 552.368379] lock_acquire+0x6c/0x88 [ 552.372364] __mutex_lock+0x68/0xa34 [ 552.376437] mutex_lock_interruptible_nested+0x1c/0x24 [ 552.382086] s5p_mfc_mmap+0x28/0xd4 [s5p_mfc] [ 552.386939] v4l2_mmap+0x54/0x88 [videodev] [ 552.391601] mmap_region+0x3a8/0x638 [ 552.395673] do_mmap+0x330/0x3a4 [ 552.399400] vm_mmap_pgoff+0x90/0xb8 [ 552.403472] SyS_mmap_pgoff+0x90/0xc0 [ 552.407632] ret_fast_syscall+0x0/0x28 [ 552.411876] other info that might help us debug this: [ 552.419848] Chain exists of: &dev->mfc_mutex --> &type->i_mutex_dir_key#2 --> &mm->mmap_sem [ 552.431200] Possible unsafe locking scenario: [ 552.437092] CPU0 CPU1 [ 552.441598] ---- ---- [ 552.446104] lock(&mm->mmap_sem); [ 552.449484] lock(&type->i_mutex_dir_key#2); [ 552.456329] lock(&mm->mmap_sem); [ 552.462222] lock(&dev->mfc_mutex); [ 552.465775] *** DEADLOCK *** Signed-off-by:
Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by:
Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by:
Sasha Levin <alexander.levin@microsoft.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Russell King authored
[ Upstream commit 20b56ed9 ] The detection of a PHY changed in commit e98a3aab ("mdio_bus: don't return NULL from mdiobus_scan()") which now causes sfp to print an error message. Update for this change. Fixes: 73970055 ("sfp: add SFP module support") Signed-off-by:
Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Russell King authored
[ Upstream commit 2794ffc4 ] The EEPROM reading was trying to read from the second EEPROM address if we requested the last byte from the SFF8079 EEPROM, which caused a failure when the second EEPROM is not present. Discovered with a S-RJ01 SFP module. Fix this. Fixes: 73970055 ("sfp: add SFP module support") Signed-off-by:
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Jerome Brunet authored
[ Upstream commit 9042b46e ] Always check phy_write return values. Better to be safe than sorry Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
Jerome Brunet <jbrunet@baylibre.com> Signed-off-by:
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Kees Cook authored
[ Upstream commit 22ec1a2a ] As done for /proc/kcore in commit df04abfd ("fs/proc/kcore.c: Add bounce buffer for ktext data") this adds a bounce buffer when reading memory via /dev/mem. This is needed to allow kernel text memory to be read out when built with CONFIG_HARDENED_USERCOPY (which refuses to read out kernel text) and without CONFIG_STRICT_DEVMEM (which would have refused to read any RAM contents at all). Since this build configuration isn't common (most systems with CONFIG_HARDENED_USERCOPY also have CONFIG_STRICT_DEVMEM), this also tries to inform Kconfig about the recommended settings. This patch is modified from Brad Spengler/PaX Team's changes to /dev/mem code in the last public patch of grsecurity/PaX based on my understanding of the code. Changes or omissions from the original code are mine and don't reflect the original grsecurity/PaX code. Reported-by:
Michael Holzheu <holzheu@linux.vnet.ibm.com> Fixes: f5509cc1 ("mm: Hardened usercopy") Signed-off-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
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Liu, Changcheng authored
[ Upstream commit 0be55579 ] If the MMC_DRV_OP_GET_EXT_CSD request completes successfully, then ext_csd must be freed, but in one case it was not. Fix that. Signed-off-by:
Liu Changcheng <changcheng.liu@intel.com> Acked-by:
Adrian Hunter <adrian.hunter@intel.com> Acked-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by:
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Daniel Drake authored
[ Upstream commit de8dcc3d ] The Weibu F3C MiniPC has an onboard AP6255 module, presenting two SDIO functions on a single MMC host (Bluetooth/btsdio and WiFi/brcmfmac), and the mmc layer correctly detects this as non-removable. After suspend/resume, the wifi and bluetooth interfaces disappear and do not get probed again. The conditions here are: 1. During suspend, we reach mmc_pm_notify() 2. mmc_pm_notify() calls mmc_sdio_pre_suspend() to see if we can suspend the SDIO host. However, mmc_sdio_pre_suspend() returns -ENOSYS because btsdio_driver does not have a suspend method. 3. mmc_pm_notify() proceeds to remove the card 4. Upon resume, mmc_rescan() does nothing with this host, because of the rescan_entered check which aims to only scan a non-removable device a single time (i.e. during boot). Fix the loss of functionality by detecting that we are unable to suspend a non-removable host, so avoid the forced removal in that case. The comment above this function already indicates that this code was only intended for removable devices. Signed-off-by:
Daniel Drake <drake@endlessm.com> Signed-off-by:
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Logan Gunthorpe authored
[ Upstream commit 4e5ca2d9 ] Add a check to ensure iowrite64 is only used if it is atomic. It was decided in [1] that the tilcdc driver should not be using an atomic operation (so it was left out of this patchset). However, it turns out that through the drm code, a nonatomic header is actually included: include/linux/io-64-nonatomic-lo-hi.h is included from include/drm/drm_os_linux.h:9:0, from include/drm/drmP.h:74, from include/drm/drm_modeset_helper.h:26, from include/drm/drm_atomic_helper.h:33, from drivers/gpu/drm/tilcdc/tilcdc_crtc.c:19: And thus, without this change, this patchset would inadvertantly change the behaviour of the tilcdc driver. [1] lkml.kernel.org/r/CAK8P3a2HhO_zCnsTzq7hmWSz5La5Thu19FWZpun16iMnyyNreQ@mail.gmail.com Signed-off-by:
Logan Gunthorpe <logang@deltatee.com> Reviewed-by:
Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Jyri Sarha <jsarha@ti.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: David Airlie <airlied@linux.ie> Signed-off-by:
Jyri Sarha <jsarha@ti.com> Signed-off-by:
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Kedareswara rao Appana authored
[ Upstream commit 5ba080aa ] Incase of interrupt property is not present, Driver is trying to free an invalid irq, This patch fixes it by adding a check before freeing the irq. Signed-off-by:
Kedareswara rao Appana <appanad@xilinx.com> Signed-off-by:
Vinod Koul <vinod.koul@intel.com> Signed-off-by:
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Shawn Nematbakhsh authored
[ Upstream commit d48b8c58 ] pkt_xfer should be used for protocol v3, and cmd_xfer otherwise. We had one instance of these functions correct, but not the second, fall-back case. We use the fall-back only when the first command returns an IN_PROGRESS status, which is only used on some EC firmwares where we don't want to constantly poll the bus, but instead back off and sleep/retry for a little while. Fixes: 2c7589af ("mfd: cros_ec: add proto v3 skeleton") Signed-off-by:
Shawn Nematbakhsh <shawnn@chromium.org> Signed-off-by:
Brian Norris <briannorris@chromium.org> Reviewed-by:
Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by:
Benson Leung <bleung@chromium.org> Signed-off-by:
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Guenter Roeck authored
[ Upstream commit 914d65f3 ] If handle_boot_enabled is set to 0, the watchdog driver module use counter will not be increased and kref_get() will not be called when registering the watchdog. Subsequently, on open, this does not happen either because the code believes that it was already done because the hardware watchdog is marked as running. We could introduce a state variable to indicate this state, but let's just increase the module use counter and call kref_get() unconditionally if the hardware watchdog is running when a driver is registering itself to keep the code simple. Fixes: 2501b015 ("watchdog: core: add option to avoid early ...") Cc: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
Wim Van Sebroeck <wim@iguana.be> Signed-off-by:
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Guenter Roeck authored
[ Upstream commit 4bcd615f ] If a watchdog driver's open function sets WDOG_HW_RUNNING with the expectation that the watchdog can not be stopped, but then stops the watchdog anyway in its stop function, kref_get() wil not be called in watchdog_open(). If the watchdog then stops on close, WDOG_HW_RUNNING will be cleared and kref_put() will be called, causing a kref imbalance. As result the character device data structure will be released, which in turn will cause the system to crash on the next call to watchdog_open(). Fixes: ee142889 ("watchdog: Introduce WDOG_HW_RUNNING flag") Signed-off-by:
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Arnd Bergmann authored
[ Upstream commit 50a0d71a ] As gcc-8 reports, we zero out the wrong byte: drivers/platform/chrome/cros_ec_sysfs.c: In function 'show_ec_version': drivers/platform/chrome/cros_ec_sysfs.c:190:12: error: array subscript 4294967295 is above array bounds of 'uint8_t[]' [-Werror=array-bounds] This changes the code back to what it did before changing to a zero-length array structure. Fixes: a8411784 ("mfd: cros_ec: Use a zero-length array for command data") Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Stefan Potyra authored
[ Upstream commit 8af016aa ] If there is no clock rate for uartclk defined, disable the previously enabled clock again. Found by Linux Driver Verification project (linuxtesting.org). Fixes: 23f5b3fd serial: 8250_dw: only get the clock rate in one place Signed-off-by:
Stefan Potyra <Stefan.Potyra@elektrobit.com> Signed-off-by:
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Sebastian Andrzej Siewior authored
[ Upstream commit 6a28fd2b ] Commit 3840ed95 ("tty: goldfish: Implement support for kernel 'earlycon' parameter") breaks an allmodconfig config on x86: | LD vmlinux.o | MODPOST vmlinux.o |drivers/tty/serial/earlycon.o: In function `parse_options': |drivers/tty/serial/earlycon.c:97: undefined reference to `uart_parse_earlycon' |Makefile:1005: recipe for target 'vmlinux' failed earlycon.c::parse_options() invokes uart_parse_earlycon() from serial_core.c which is compiled=m because GOLDFISH_TTY itself (and most others) are =m. To avoid that, I'm adding the _CONSOLE config option which is selected if the GOLDFISH module itself is =y since it doesn't need the early bits for the =m case (other drivers do the same dance). The alternative would be to move uart_parse_earlycon() from serial_core.c to earlycon.c (we don't have that many users of that function). Fixes: 3840ed95 ("tty: goldfish: Implement support for kernel 'earlycon' parameter") Signed-off-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by:
Miodrag Dinic <miodrag.dinic@mips.com> Acked-by:
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Bjørn Mork authored
[ Upstream commit 245d2119 ] It has been reported that the dummy byte we add to avoid ZLPs can be forwarded by the modem to the PGW/GGSN, and that some operators will drop the connection if this happens. In theory, QMI devices are based on CDC ECM and should as such both support ZLPs and silently ignore the dummy byte. The latter assumption failed. Let's test out the first. Signed-off-by:
Bjørn Mork <bjorn@mork.no> Signed-off-by:
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Ron Economos authored
[ Upstream commit 380a6c86 ] On faster CPUs a delay is required after the resume command and the restart command. Without the delay, the restart command often returns -EREMOTEIO and the Si2168 does not restart. Note that this patch fixes the same issue as https://patchwork.linuxtv.org/patch/44304/, but I believe my udelay() fix addresses the actual problem. Signed-off-by:
Ron Economos <w6rz@comcast.net> Signed-off-by:
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Balaji Pothunoori authored
[ Upstream commit 07ffb449 ] Data packets are not sent by STA in case of STA joined to non QOS AP (WMM disabled AP). This is happening because of STA is sending data packets to firmware from host with qos enabled along with non qos queue value(TID = 16). Due to qos enabled, firmware is discarding the packet. This patch fixes this issue by updating the qos based on station WME capability field if WMM is disabled in AP. This patch is required by 10.4 family chipsets like QCA4019/QCA9888/QCA9884/QCA99X0. Firmware Versoin : 10.4-3.5.1-00018. For 10.2.4 family chipsets QCA988X/QCA9887 and QCA6174 this patch has no effect. Signed-off-by:
Balaji Pothunoori <bpothuno@qti.qualcomm.com> Signed-off-by:
Kalle Valo <kvalo@qca.qualcomm.com> Signed-off-by:
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Christophe JAILLET authored
[ Upstream commit 45392ff6 ] This is odd to call 'pci_disable_device()' in an error path before a coresponding successful 'pci_enable_device()'. Return directly instead. Fixes: 77e0be12 ("V4L/DVB (4176): Bug-fix: Fix memory overflow") Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by:
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Nicolas Iooss authored
[ Upstream commit e4779162 ] In rtl_rx_ampdu_apply(), when rtlpriv->cfg->ops->get_btc_status() returns false, RT_TRACE() is called with the values of variables reject_agg and agg_size, which have not been initialized. Always initialize these variables in order to prevent using uninitialized values. This issue has been found with clang. The compiler reported: drivers/net/wireless/realtek/rtlwifi/base.c:1665:6: error: variable 'agg_size' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized] if (rtlpriv->cfg->ops->get_btc_status()) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/wireless/realtek/rtlwifi/base.c:1671:31: note: uninitialized use occurs here reject_agg, ctrl_agg_size, agg_size); ^~~~~~~~ drivers/net/wireless/realtek/rtlwifi/base.c:1665:6: error: variable 'reject_agg' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized] if (rtlpriv->cfg->ops->get_btc_status()) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/wireless/realtek/rtlwifi/base.c:1671:4: note: uninitialized use occurs here reject_agg, ctrl_agg_size, agg_size); ^~~~~~~~~~ Fixes: 2635664e ("rtlwifi: Add rx ampdu cfg for btcoexist.") Signed-off-by:
Nicolas Iooss <nicolas.iooss_linux@m4x.org> Signed-off-by:
Kalle Valo <kvalo@codeaurora.org> Signed-off-by:
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Tsang-Shian Lin authored
[ Upstream commit b7573a0a ] Reset the driver current tx read/write index to zero when inactiveps nic out of sync with HW state. Wrong driver tx read/write index will cause Tx fail. Signed-off-by:
Tsang-Shian Lin <thlin@realtek.com> Signed-off-by:
Ping-Ke Shih <pkshih@realtek.com> Signed-off-by:
Larry Finger <Larry.Finger@lwfinger.net> Cc: Yan-Hsuan Chuang <yhchuang@realtek.com> Cc: Birming Chiu <birming@realtek.com> Cc: Shaofu <shaofu@realtek.com> Cc: Steven Ting <steventing@realtek.com> Signed-off-by:
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Geert Uytterhoeven authored
[ Upstream commit 7ff0b53c ] The spi_master.setup() callback must not change configuration registers, as that could corrupt I/O that is in progress for other SPI slaves. The only exception is the configuration of the native chip select polarity in SPI master mode, as a wrong chip select polarity will cause havoc during all future transfers to any other SPI slave. Hence stop writing to registers in sh_msiof_spi_setup(), unless it is the first call for a controller using a native chip select, or unless native chip select polarity has changed (note that you'll loose anyway if I/O is in progress). Even then, only do what is strictly necessary, instead of calling sh_msiof_spi_set_pin_regs(). Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
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Haiyang Zhang authored
[ Upstream commit 41f61db2 ] The values were not computed correctly. There are no significant visible impact, though. The intended size of RX buffer is 16 MB, and the default slot size is 1728. So, NETVSC_DEFAULT_RX should be 16*1024*1024 / 1728 = 9709. The intended size of TX buffer is 1 MB, and the slot size is 6144. So, NETVSC_DEFAULT_TX should be 1024*1024 / 6144 = 170. The patch puts the formula directly into the macro, and moves them to hyperv_net.h, together with related macros. Fixes: 5023a6db ("netvsc: increase default receive buffer size") Signed-off-by:
Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by:
Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by:
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Haiyang Zhang authored
[ Upstream commit 11b2b653 ] The max should be 31 MB on host with NVSP version > 2. On legacy hosts (NVSP version <=2) only 15 MB receive buffer is allowed, otherwise the buffer request will be rejected by the host, resulting vNIC not coming up. The NVSP version is only available after negotiation. So, we add the limit checking for legacy hosts in netvsc_init_buf(). Fixes: 5023a6db ("netvsc: increase default receive buffer size") Signed-off-by:
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Geert Uytterhoeven authored
[ Upstream commit 302d6424 ] With gcc-4.1.2: drivers/infiniband/core/iwpm_util.c: In function ‘iwpm_send_mapinfo’: drivers/infiniband/core/iwpm_util.c:647: warning: ‘ret’ may be used uninitialized in this function Indeed, if nl_client is not found in any of the scanned has buckets, ret will be used uninitialized. Preinitialize ret to -EINVAL to fix this. Fixes: 30dc5e63 ("RDMA/core: Add support for iWARP Port Mapper user space service") Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by:
Tatyana Nikolova <tatyana.e.nikolova@intel.com> Signed-off-by:
Jason Gunthorpe <jgg@mellanox.com> Signed-off-by:
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Prakash Kamliya authored
[ Upstream commit 62e3a3e3 ] get_pages doesn't keep a reference of the pages allocated when it fails later in the code path. This can lead to a memory leak. Keep reference of the allocated pages so that it can be freed when msm_gem_free_object gets called later during cleanup. Signed-off-by:
Prakash Kamliya <pkamliya@codeaurora.org> Signed-off-by:
Sharat Masetty <smasetty@codeaurora.org> Signed-off-by:
Rob Clark <robdclark@gmail.com> Signed-off-by:
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Gustavo A. R. Silva authored
[ Upstream commit baed3c4b ] _channel_ is being dereferenced before it is null checked, hence there is a potential null pointer dereference. Fix this by moving the pointer dereference after _channel_ has been null checked. This issue was detected with the help of Coccinelle. Fixes: c5f5d0f9 ("[media] c8sectpfe: STiH407/10 Linux DVB demux support") Signed-off-by:
Gustavo A. R. Silva <garsilva@embeddedor.com> Acked-by:
Patrice Chotard <patrice.chotard@st.com> Signed-off-by:
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Viresh Kumar authored
[ Upstream commit 1d0d0643 ] The commit e948bc8f ("cpufreq: Cap the default transition delay value to 10 ms") caused a regression on EPIA-M min-ITX computer where shutdown or reboot hangs occasionally with a print message like: longhaul: Warning: Timeout while waiting for idle PCI bus cpufreq: __target_index: Failed to change cpu frequency: -16 This probably happens because the cpufreq governor tries to change the frequency of the CPU faster than allowed by the hardware. Before the above commit, the default transition delay was set to 200 ms for a transition_latency of 200000 ns. Lets revert back to that transition delay value to fix it. Note that several other transition delay values were tested like 20 ms and 30 ms and none of them have resolved system hang issue completely. Fixes: e948bc8f (cpufreq: Cap the default transition delay value to 10 ms) Reported-by:
Meelis Roos <mroos@linux.ee> Suggested-by:
Rafael J. Wysocki <rjw@rjwysocki.net> Signed-off-by:
Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
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Loic Poulain authored
[ Upstream commit 67b8fbea ] In case of hci send frame failure, skb is still owned by the caller (hci_core) and then should not be freed. This fixes crash on dragonboard-410c when sending SCO packet. skb is freed by both btqcomsmd and hci_core. Fixes: 1511cc75 ("Bluetooth: Introduce Qualcomm WCNSS SMD based HCI driver") Signed-off-by:
Loic Poulain <loic.poulain@linaro.org> Signed-off-by:
Marcel Holtmann <marcel@holtmann.org> Signed-off-by:
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Loic Poulain authored
[ Upstream commit ba8f3597 ] Assuming that the original code idea was to enable in-band sleeping only if the setup_rome method returns succes and run in 'standard' mode otherwise, we should not return setup_rome return value which makes qca_setup fail if no rampatch/nvm file found. This fixes BT issue on the dragonboard-820C p4 which includes the following QCA controller: hci0: Product:0x00000008 hci0: Patch :0x00000111 hci0: ROM :0x00000302 hci0: SOC :0x00000044 Since there is no rampatch for this controller revision, just make it work as is. Signed-off-by:
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Yisheng Xie authored
commit 740a5759 upstream. ashmem_mutex may create a chain of dependencies like: CPU0 CPU1 mmap syscall ioctl syscall -> mmap_sem (acquired) -> ashmem_ioctl -> ashmem_mmap -> ashmem_mutex (acquired) -> ashmem_mutex (try to acquire) -> copy_from_user -> mmap_sem (try to acquire) There is a lock odering problem between mmap_sem and ashmem_mutex causing a lockdep splat[1] during a syzcaller test. This patch fixes the problem by move copy_from_user out of ashmem_mutex. [1] https://www.spinics.net/lists/kernel/msg2733200.html Fixes: ce8a3a9e (staging: android: ashmem: Fix a race condition in pin ioctls) Reported-by: syzbot+d7a918a7a8e1c952bc36@syzkaller.appspotmail.com Signed-off-by:
Yisheng Xie <xieyisheng1@huawei.com> Cc: "Joel Fernandes (Google)" <joel.opensrc@gmail.com> Signed-off-by:
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Shivasharan S authored
commit 9ff97fa8 upstream. Problem Statement: Sending I/O through 32 bit descriptors to Ventura series of controller results in IO timeout on certain conditions. This error only occurs on systems with high I/O activity on Ventura series controllers. Changes in this patch will prevent driver from using 32 bit descriptor and use 64 bit Descriptors. Cc: <stable@vger.kernel.org> Signed-off-by:
Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by:
Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Reviewed-by:
Hannes Reinecke <hare@suse.com> Reviewed-by:
Tomas Henzl <thenzl@redhat.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
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- 21 Mar, 2018 8 commits
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Greg Kroah-Hartman authored
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Thinh Nguyen authored
commit b16ea8b9 upstream. The FIFO/Queue type values are incorrect. Correct them according to DWC_usb3 programming guide section 1.2.27 (or DWC_usb31 section 1.2.25). Additionally, this patch includes ProtocolStatusQ and AuxEventQ types. Fixes: cf6d867d ("usb: dwc3: core: add fifo space helper") Signed-off-by:
Thinh Nguyen <thinhn@synopsys.com> Signed-off-by:
Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by:
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Wei Yongjun authored
commit 8874ae5f upstream. Add the missing platform_device_put() before return from bdc_pci_probe() in the platform_device_add_resources() error handling case. Fixes: efed421a ("usb: gadget: Add UDC driver for Broadcom USB3.0 device controller IP BDC") Signed-off-by:
Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by:
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Bill Kuzeja authored
commit 6a2cf8d3 upstream. Because of the shifting around of code in qla2x00_probe_one recently, failures during adapter initialization can lead to problems, i.e. NULL pointer crashes and doubly freed data structures which cause eventual panics. This V2 version makes the relevant memory free routines idempotent, so repeat calls won't cause any harm. I also removed the problematic probe_init_failed exit point as it is not needed. Fixes: d64d6c56 ("scsi: qla2xxx: Fix NULL pointer crash due to probe failure") Signed-off-by:
Bill Kuzeja <william.kuzeja@stratus.com> Acked-by:
Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by:
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Himanshu Madhani authored
commit a2390348 upstream. Commit 3515832c ("scsi: qla2xxx: Reset the logo flag, after target re-login.")fixed the target re-login after session relogin is complete, but missed out the qlt_free_session_done() path. This patch clears send_els_logo flag in qlt_free_session_done() callback. [mkp: checkpatch] Fixes: 3515832c ("scsi: qla2xxx: Reset the logo flag, after target re-login.") Signed-off-by:
Himanshu Madhani <hmadhani@redhat.com> Signed-off-by:
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Quinn Tran authored
commit 5c25d451 upstream. when processing iocb in a timeout case, driver was trying to log messages without verifying if the fcport structure could have valid data. This results in a NULL pointer access. Fixes: 726b8548("qla2xxx: Add framework for async fabric discovery") Signed-off-by:
Quinn Tran <quinn.tran@cavium.com> Signed-off-by:
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Himanshu Madhani authored
commit 62aa2814 upstream. This patch fixes following warnings reported by smatch: drivers/scsi/qla2xxx/qla_mid.c:586 qla25xx_delete_req_que() error: we previously assumed 'req' could be null (see line 580) drivers/scsi/qla2xxx/qla_mid.c:602 qla25xx_delete_rsp_que() error: we previously assumed 'rsp' could be null (see line 596) Fixes: 7867b98d ("scsi: qla2xxx: Fix memory leak in dual/target mode") Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Nikolay Borisov authored
commit 9deae968 upstream. Commit addc3fa7 ("Btrfs: Fix the problem that the dirty flag of dev stats is cleared") reworked the way device stats changes are tracked. A new atomic dev_stats_ccnt counter was introduced which is incremented every time any of the device stats counters are changed. This serves as a flag whether there are any pending stats changes. However, this patch only partially implemented the correct memory barriers necessary: - It only ordered the stores to the counters but not the reads e.g. btrfs_run_dev_stats - It completely omitted any comments documenting the intended design and how the memory barriers pair with each-other This patch provides the necessary comments as well as adds a missing smp_rmb in btrfs_run_dev_stats. Furthermore since dev_stats_cnt is only a snapshot at best there was no point in reading the counter twice - once in btrfs_dev_stats_dirty and then again when assigning stats_cnt. Just collapse both reads into 1. Fixes: addc3fa7 ("Btrfs: Fix the problem that the dirty flag of dev stats is cleared") Signed-off-by:
Nikolay Borisov <nborisov@suse.com> Reviewed-by:
Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
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