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2017-03-06Revert "usb: gadget: f_fs: Fix ExtCompat descriptor validation"Janusz Dziedzic
This reverts commit ac670a3a650b899fc020b81f63e810d06015b865. This introduce bug we already fixed in commit 53642399aa71 ("usb: gadget: f_fs: Fix wrong check on reserved1 wof OS_DESC_EXT_COMPAT") Next FFS (adb) SS enumeration fail with Windows OS. Signed-off-by: Janusz Dziedzic <januszx.dziedzic@linux.intel.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-03-06USB: gadgetfs: Fix a potential memory leak in 'dev_config()'Christophe JAILLET
'kbuf' is allocated just a few lines above using 'memdup_user()'. If the 'if (dev->buf)' test fails, this memory is never released. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-03-06usb: gadget: udc: atmel: fix debug outputArnd Bergmann
The debug output now contains the wrong variable, as seen from the compiler warning: drivers/usb/gadget/udc/atmel_usba_udc.c: In function 'usba_ep_enable': drivers/usb/gadget/udc/atmel_usba_udc.c:632:550: error: 'ept_cfg' may be used uninitialized in this function [-Werror=maybe-uninitialized] DBG(DBG_ERR, "%s: EPT_CFG = 0x%lx (maxpacket = %lu)\n", This changes the debug output the same way as the other code. Fixes: 741d2558bf0a ("usb: gadget: udc: atmel: Update endpoint allocation scheme") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-03-06usb: dwc3: Fix incorrect type for utmi modeFranck Demathieu
The utmi mode is unsigned according the dt-bindings. Fix sparse issue (-Wtypesign): drivers/usb/dwc3/dwc3-omap.c:391:50: warning: incorrect type in argument 3 (different signedness) drivers/usb/dwc3/dwc3-omap.c:391:50: expected unsigned int [usertype] *out_value drivers/usb/dwc3/dwc3-omap.c:391:50: got int *<noident> Signed-off-by: Franck Demathieu <fdemathieu@gmail.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-03-06usb: gadget: configs: plug memory leakJohn Keeping
When binding a gadget to a device, "name" is stored in gi->udc_name, but this does not happen when unregistering and the string is leaked. Signed-off-by: John Keeping <john@metanate.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-03-06irqchip/crossbar: Fix incorrect type of local variablesFranck Demathieu
The max and entry variables are unsigned according to the dt-bindings. Fix following 3 sparse issues (-Wtypesign): drivers/irqchip/irq-crossbar.c:222:52: warning: incorrect type in argument 3 (different signedness) drivers/irqchip/irq-crossbar.c:222:52: expected unsigned int [usertype] *out_value drivers/irqchip/irq-crossbar.c:222:52: got int *<noident> drivers/irqchip/irq-crossbar.c:245:56: warning: incorrect type in argument 4 (different signedness) drivers/irqchip/irq-crossbar.c:245:56: expected unsigned int [usertype] *out_value drivers/irqchip/irq-crossbar.c:245:56: got int *<noident> drivers/irqchip/irq-crossbar.c:263:56: warning: incorrect type in argument 4 (different signedness) drivers/irqchip/irq-crossbar.c:263:56: expected unsigned int [usertype] *out_value drivers/irqchip/irq-crossbar.c:263:56: got int *<noident> Signed-off-by: Franck Demathieu <fdemathieu@gmail.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-03-06usb: gadget: dummy_hcd: clear usb_gadget region before registrationPeter Chen
When the user does device unbind and rebind test, the kernel will show below dump due to usb_gadget memory region is dirty after unbind. Clear usb_gadget region for every new probe. root@imx6qdlsolo:/sys/bus/platform/drivers/dummy_udc# echo dummy_udc.0 > bind [ 102.523312] kobject (eddd78b0): tried to init an initialized object, something is seriously wrong. [ 102.532447] CPU: 0 PID: 734 Comm: sh Not tainted 4.10.0-rc7-00872-g1b2b8e9 #1298 [ 102.539866] Hardware name: Freescale i.MX6 SoloX (Device Tree) [ 102.545717] Backtrace: [ 102.548225] [<c010d090>] (dump_backtrace) from [<c010d338>] (show_stack+0x18/0x1c) [ 102.555822] r7:ede34000 r6:60010013 r5:00000000 r4:c0f29418 [ 102.561512] [<c010d320>] (show_stack) from [<c040c2a4>] (dump_stack+0xb4/0xe8) [ 102.568764] [<c040c1f0>] (dump_stack) from [<c040e6d4>] (kobject_init+0x80/0x9c) [ 102.576187] r10:0000001f r9:eddd7000 r8:eeaf8c10 r7:eddd78a8 r6:c177891c r5:c0f3b060 [ 102.584036] r4:eddd78b0 r3:00000000 [ 102.587641] [<c040e654>] (kobject_init) from [<c05359a4>] (device_initialize+0x28/0xf8) [ 102.595665] r5:eebc4800 r4:eddd78a8 [ 102.599268] [<c053597c>] (device_initialize) from [<c05382ac>] (device_register+0x14/0x20) [ 102.607556] r7:eddd78a8 r6:00000000 r5:eebc4800 r4:eddd78a8 [ 102.613256] [<c0538298>] (device_register) from [<c0668ef4>] (usb_add_gadget_udc_release+0x8c/0x1ec) [ 102.622410] r5:eebc4800 r4:eddd7860 [ 102.626015] [<c0668e68>] (usb_add_gadget_udc_release) from [<c0669068>] (usb_add_gadget_udc+0x14/0x18) [ 102.635351] r10:0000001f r9:eddd7000 r8:eddd788c r7:bf003770 r6:eddd77f8 r5:eddd7818 [ 102.643198] r4:eddd785c r3:eddd7b24 [ 102.646834] [<c0669054>] (usb_add_gadget_udc) from [<bf003428>] (dummy_udc_probe+0x170/0x1c4 [dummy_hcd]) [ 102.656458] [<bf0032b8>] (dummy_udc_probe [dummy_hcd]) from [<c053d114>] (platform_drv_probe+0x54/0xb8) [ 102.665881] r10:00000008 r9:c1778960 r8:bf004128 r7:fffffdfb r6:bf004128 r5:eeaf8c10 [ 102.673727] r4:eeaf8c10 [ 102.676293] [<c053d0c0>] (platform_drv_probe) from [<c053b160>] (driver_probe_device+0x264/0x474) [ 102.685186] r7:00000000 r6:00000000 r5:c1778960 r4:eeaf8c10 [ 102.690876] [<c053aefc>] (driver_probe_device) from [<c05397c4>] (bind_store+0xb8/0x14c) [ 102.698994] r10:eeb3bb4c r9:ede34000 r8:0000000c r7:eeaf8c44 r6:bf004128 r5:c0f3b668 [ 102.706840] r4:eeaf8c10 [ 102.709402] [<c053970c>] (bind_store) from [<c0538ca8>] (drv_attr_store+0x28/0x34) [ 102.716998] r9:ede34000 r8:00000000 r7:ee3863c0 r6:ee3863c0 r5:c0538c80 r4:c053970c [ 102.724776] [<c0538c80>] (drv_attr_store) from [<c029c930>] (sysfs_kf_write+0x50/0x54) [ 102.732711] r5:c0538c80 r4:0000000c [ 102.736313] [<c029c8e0>] (sysfs_kf_write) from [<c029be84>] (kernfs_fop_write+0x100/0x214) [ 102.744599] r7:ee3863c0 r6:eeb3bb40 r5:00000000 r4:00000000 [ 102.750287] [<c029bd84>] (kernfs_fop_write) from [<c0222dd8>] (__vfs_write+0x34/0x120) [ 102.758231] r10:00000000 r9:ede34000 r8:c0108bc4 r7:0000000c r6:ede35f80 r5:c029bd84 [ 102.766077] r4:ee223780 [ 102.768638] [<c0222da4>] (__vfs_write) from [<c0224678>] (vfs_write+0xa8/0x170) [ 102.775974] r9:ede34000 r8:c0108bc4 r7:ede35f80 r6:01861cb0 r5:ee223780 r4:0000000c [ 102.783743] [<c02245d0>] (vfs_write) from [<c0225498>] (SyS_write+0x4c/0xa8) [ 102.790818] r9:ede34000 r8:c0108bc4 r7:0000000c r6:01861cb0 r5:ee223780 r4:ee223780 [ 102.798595] [<c022544c>] (SyS_write) from [<c0108a20>] (ret_fast_syscall+0x0/0x1c) [ 102.806188] r7:00000004 r6:b6e83d58 r5:01861cb0 r4:0000000c Fixes: 90fccb529d24 ("usb: gadget: Gadget directory cleanup - group UDC drivers") Cc: stable <stable@vger.kernel.org> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Peter Chen <peter.chen@nxp.com> Tested-by: Xiaolong Ye <xiaolong.ye@intel.com> Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-03-06Revert "usb: gadget: uvc: Add missing call for additional setup data"Roger Quadros
This reverts commit 4fbac5206afd01b717d4bdc58793d471f3391b4b. This commit breaks g_webcam when used with uvc-gadget [1]. The user space application (e.g. uvc-gadget) is responsible for sending response to UVC class specific requests on control endpoint in uvc_send_response() in uvc_v4l2.c. The bad commit was causing a duplicate response to be sent with incorrect response data thus causing UVC probe to fail at the host and broken control transfer endpoint at the gadget. [1] - git://git.ideasonboard.org/uvc-gadget.git Cc: <stable@vger.kernel.org> # v4.9+ Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-03-06staging/vc04_services: add CONFIG_OF dependencyArnd Bergmann
After several hours of debugging this obviously bogus but elaborate gcc-7.0.1 warning, drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c: In function 'vchiq_complete_bulk': drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c:603:4: error: argument 2 null where non-null expected [-Werror=nonnull] memcpy((char *)page_address(pages[0]) + ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ pagelist->offset, ~~~~~~~~~~~~~~~~~ fragments, ~~~~~~~~~~ head_bytes); ~~~~~~~~~~~ In file included from include/linux/string.h:18:0, from include/linux/bitmap.h:8, from include/linux/cpumask.h:11, from include/linux/interrupt.h:9, from drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c:37: arch/arm/include/asm/string.h:16:15: note: in a call to function 'memcpy' declared here extern void * memcpy(void *, const void *, __kernel_size_t) __nocapture(2); ^~~~~~ I have concluded that gcc was technically right in the first place: vchiq_complete_bulk is an externally visible function that calls free_pagelist(), which in turn derives a pointer from the global g_fragments_base variable. g_fragments_base is initialized in vchiq_platform_init(), but we only get there if of_property_read_u32() successfully reads the cache line size. When CONFIG_OF is disabled, this always fails, and g_fragments_base is guaranteed to be NULL when vchiq_complete_bulk() gets called. This adds a CONFIG_OF Kconfig dependency, which is also technically correct but nonobvious, and thus seems like a good fit for the warning. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-06pinctrl: uniphier: change pin names of aio/xirq for LD11Kunihiko Hayashi
This patch changes pin names of AIO and XIRQ according to updated specification. Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-03-06pinctrl: qcom: add get_direction functionTimur Tabi
The get_direction callback function allows gpiolib to know the current direction (input vs output) for a given GPIO. This is particularly useful on ACPI systems, where the GPIOs are configured only by firmware (typically UEFI), so the only way to know the initial values to query the hardware directly. Without this function, gpiolib thinks that all GPIOs are configured for input. Signed-off-by: Timur Tabi <timur@codeaurora.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-03-06[media] dw2102: don't do DMA on stackJonathan McDowell
On Kernel 4.9, WARNINGs about doing DMA on stack are hit at the dw2102 driver: one in su3000_power_ctrl() and the other in tt_s2_4600_frontend_attach(). Both were due to the use of buffers on the stack as parameters to dvb_usb_generic_rw() and the resulting attempt to do DMA with them. The device was non-functional as a result. So, switch this driver over to use a buffer within the device state structure, as has been done with other DVB-USB drivers. Tested with TechnoTrend TT-connect S2-4600. [mchehab@osg.samsung.com: fixed a warning at su3000_i2c_transfer() that state var were dereferenced before check 'd'] Signed-off-by: Jonathan McDowell <noodles@earth.li> Cc: <stable@vger.kernel.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-03-06drm/i915/gvt: protect RO and Rsvd bits of virtual vgpu configuration spaceChangbin Du
Per PCI specification, Configuration Register has different types (RO, RW, RW1C, Rsvd). For RO Register bits are read-only and cannot be altered by software. For RW1C Register bits indicate status when read. A Set bit indicates a status event which is Cleared by writing a 1b. Writing a 0b to RW1C bits has no effect. Reserved Register is for future implementations, and they are read-only and must return zero when read. Current vGPU configuration write emulation just copy the value as it is. So we haven't emulated RO, RW1C and Rsvd Registers correctly. This patch is following the Spec to correct emulation logic. We add a function vgpu_cfg_mem_write to wrap the access to vGPU configuration memory. The write function uses a RW Register bitmap to avoid RO bits be overwritten, and emulate RW1C behavior for the particular status Register. v2: new = src[i] --> new = src[i] & mask (zhenyu) Signed-off-by: Changbin Du <changbin.du@intel.com> Cc: Xiaoguang Chen <xiaoguang.chen@intel.com> Cc: Zhiyuan Lv <zhiyuan.lv@intel.com> Cc: Min He <min.he@intel.com> Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2017-03-06drm/i915/gvt: handle workload lifecycle properlyChuanxiao Dong
Currently i915 has a request replay mechanism which can make sure the request can be replayed after a GPU reset. With this mechanism, gvt should wait until the GVT request seqno passed before complete the current workload. So that there should be a context switch interrupt come before gvt free the workload. In this way, workload lifecylce matches with the i915 request lifecycle. The workload can only be freed after the request is completed. v2: use gvt_dbg_sched instead of gvt_err to print when wait again Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2017-03-06USB: serial: digi_acceleport: fix OOB-event processingJohan Hovold
A recent change claimed to fix an off-by-one error in the OOB-port completion handler, but instead introduced such an error. This could specifically led to modem-status changes going unnoticed, effectively breaking TIOCMGET. Note that the offending commit fixes a loop-condition underflow and is marked for stable, but should not be backported without this fix. Reported-by: Ben Hutchings <ben@decadent.org.uk> Fixes: 2d380889215f ("USB: serial: digi_acceleport: fix OOB data sanity check") Cc: stable <stable@vger.kernel.org> # v2.6.30: 2d380889215f Signed-off-by: Johan Hovold <johan@kernel.org>
2017-03-06usb: dwc3: gadget: properly increment dequeue pointer on ep_dequeueFelipe Balbi
If request was already started, this means we had to stop the transfer. With that we also need to ignore all TRBs used by the request, however TRBs can only be modified after completion of END_TRANSFER command. So what we have to do here is wait for END_TRANSFER completion and only after that jump over TRBs by clearing HWO and incrementing dequeue pointer. Note that we have 2 possible types of transfers here: i) Linear buffer request ii) SG-list based request SG-list based requests will have r->num_pending_sgs set to a valid number (> 0). Linear requests, normally use a single TRB. For each of these two cases, if r->unaligned flag is set, one extra TRB has been used to align transfer size to wMaxPacketSize. All of these cases need to be taken into consideration so we don't mess up our TRB ring pointers. Tested-by: Janusz Dziedzic <januszx.dziedzic@intel.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-03-06usb: gadget: function: f_fs: pass companion descriptor alongFelipe Balbi
If we're dealing with SuperSpeed endpoints, we need to make sure to pass along the companion descriptor and initialize fields needed by the Gadget API. Eventually, f_fs.c should be converted to use config_ep_by_speed() like all other functions, though. Cc: <stable@vger.kernel.org> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-03-06usb: dwc3: gadget: make Set Endpoint Configuration macros safeFelipe Balbi
Some gadget drivers are bad, bad boys. We notice that ADB was passing bad Burst Size which caused top bits of param0 to be overwritten which confused DWC3 when running this command. In order to avoid future issues, we're going to make sure values passed by macros are always safe for the controller. Note that ADB still needs a fix to *not* pass bad values. Cc: <stable@vger.kernel.org> # v3.2+ Reported-by: Mohamed Abbas <mohamed.abbas@intel.com> Sugested-by: Adam Andruszak <adam.andruszak@intel.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-03-06drm/edid: Add EDID_QUIRK_FORCE_8BPC quirk for Rotel RSX-1058Tomeu Vizoso
Rotel RSX-1058 is a receiver with 4 HDMI inputs and a HDMI output, all 1.1. When a sink that supports deep color is connected to the output, the receiver will send EDIDs that advertise this capability, even if it isn't possible with HDMI versions earlier than 1.3. Currently the kernel is assuming that deep color is possible and the sink displays an error. This quirk will make sure that deep color isn't used with this particular receiver. Fixes: 7a0baa623446 ("Revert "drm/i915: Disable 12bpc hdmi for now"") Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170220152545.13153-1-tomeu.vizoso@collabora.com Cc: stable@vger.kernel.org Cc: Matt Horan <matt@matthoran.com> Tested-by: Matt Horan <matt@matthoran.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99869 Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
2017-03-05net: phy: Do not perform software reset for Generic PHYFlorian Fainelli
The Generic PHY driver is a catch-all PHY driver and it should preserve whatever prior initialization has been done by boot loader or firmware agents. For specific PHY device configuration it is expected that a specialized PHY driver would take over that role. Resetting the generic PHY was a bad idea that has lead to several complaints and downstream workarounds e.g: in OpenWrt/LEDE so restore the behavior prior to 87aa9f9c61ad ("net: phy: consolidate PHY reset in phy_init_hw()"). Reported-by: Felix Fietkau <nbd@nbd.name> Fixes: 87aa9f9c61ad ("net: phy: consolidate PHY reset in phy_init_hw()") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-06cpufreq: intel_pstate: Do not reinit performance limits in ->setpolicyRafael J. Wysocki
If the current P-state selection algorithm is set to "performance" in intel_pstate_set_policy(), the limits may be initialized from scratch, but only if no_turbo is not set and the maximum frequency allowed for the given CPU (i.e. the policy object representing it) is at least equal to the max frequency supported by the CPU. In all of the other cases, the limits will not be updated. For example, the following can happen: # cat intel_pstate/status active # echo performance > cpufreq/policy0/scaling_governor # cat intel_pstate/min_perf_pct 100 # echo 94 > intel_pstate/min_perf_pct # cat intel_pstate/min_perf_pct 100 # cat cpufreq/policy0/scaling_max_freq 3100000 echo 3000000 > cpufreq/policy0/scaling_max_freq # cat intel_pstate/min_perf_pct 94 # echo 95 > intel_pstate/min_perf_pct # cat intel_pstate/min_perf_pct 95 That is confusing for two reasons. First, the initial attempt to change min_perf_pct to 94 seems to have no effect, even though setting the global limits should always work. Second, after changing scaling_max_freq for policy0 the global min_perf_pct attribute shows 94, even though it should have not been affected by that operation in principle. Moreover, the final attempt to change min_perf_pct to 95 worked as expected, because scaling_max_freq for the only policy with scaling_governor equal to "performance" was different from the maximum at that time. To make all that confusion go away, modify intel_pstate_set_policy() so that it doesn't reinitialize the limits at all. At the same time, change intel_pstate_set_performance_limits() to set min_sysfs_pct to 100 in the "performance" limits set so that switching the P-state selection algorithm to "performance" causes intel_pstate/min_perf_pct in sysfs to go to 100 (or whatever value min_sysfs_pct in the "performance" limits is set to later). That requires per-CPU limits to be initialized explicitly rather than by copying the global limits to avoid setting min_sysfs_pct in the per-CPU limits to 100. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-03-06cpufreq: intel_pstate: Fix intel_pstate_verify_policy()Rafael J. Wysocki
The code added to intel_pstate_verify_policy() by commit 1443ebbacfd7 (cpufreq: intel_pstate: Fix sysfs limits enforcement for performance policy) should use perf_limits instead of limits, because otherwise setting global limits via sysfs may affect policies inconsistently. For example, in the sequence of shell commands below, the scaling_min_freq attribute for policy1 and policy2 should be affected in the same way, because scaling_governor is set in the same way for both of them: # cat cpufreq/policy1/scaling_governor powersave # cat cpufreq/policy2/scaling_governor powersave # echo performance > cpufreq/policy0/scaling_governor # echo 94 > intel_pstate/min_perf_pct # cat cpufreq/policy0/scaling_min_freq 2914000 # cat cpufreq/policy1/scaling_min_freq 2914000 # cat cpufreq/policy2/scaling_min_freq 800000 The are affected differently, because intel_pstate_verify_policy() is invoked with limits set to &performance_limits (left behind by policy0) for policy1 and with limits set to &powersave_limits (left behind by policy1) for policy2. Since perf_limits is set to the set of limits matching the policy being updated, using it instead of limits fixes the inconsistency. Fixes: 1443ebbacfd7 (cpufreq: intel_pstate: Fix sysfs limits enforcement for performance policy) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-03-06cpufreq: intel_pstate: Fix global settings in active modeRafael J. Wysocki
Commit 111b8b3fe4fa (cpufreq: intel_pstate: Always keep all limits settings in sync) changed intel_pstate to invoke cpufreq_update_policy() for every registered CPU on global sysfs attributes updates, but that led to undesirable effects in the active mode if the "performance" P-state selection algorithm is configufred for one CPU and the "powersave" one is chosen for all of the other CPUs. Namely, in that case, the following is possible: # cd /sys/devices/system/cpu/ # cat intel_pstate/max_perf_pct 100 # cat intel_pstate/min_perf_pct 26 # echo performance > cpufreq/policy0/scaling_governor # cat intel_pstate/max_perf_pct 100 # cat intel_pstate/min_perf_pct 100 # echo 94 > intel_pstate/min_perf_pct # cat intel_pstate/min_perf_pct 26 The reason why this happens is because intel_pstate attempts to maintain two sets of global limits in the active mode, one for the "performance" P-state selection algorithm and one for the "powersave" P-state selection algorithm, but the P-state selection algorithms are set per policy, so the global limits cannot reflect all of them at the same time if they are different for different policies. In the particular situation above, the attempt to change min_perf_pct to 94 caused cpufreq_update_policy() to be run for a CPU with the "powersave" P-state selection algorithm and intel_pstate_set_policy() called by it silently switched the global limits to the "powersave" set which finally was reflected by the sysfs interface. To prevent that from happening, modify intel_pstate_update_policies() to always switch back to the set of limits that was used right before it has been invoked. Fixes: 111b8b3fe4fa (cpufreq: intel_pstate: Always keep all limits settings in sync) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-03-06cpufreq: Add the "cpufreq.off=1" cmdline optionLen Brown
Add the "cpufreq.off=1" cmdline option. At boot-time, this allows a user to request CONFIG_CPU_FREQ=n behavior from a kernel built with CONFIG_CPU_FREQ=y. This is analogous to the existing "cpuidle.off=1" option and CONFIG_CPU_IDLE=y This capability is valuable when we need to debug end-user issues in the BIOS or in Linux. It is also convenient for enabling comparisons, which may otherwise require a new kernel, or help from BIOS SETUP, which may be buggy or unavailable. Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-03-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: 1) Fix double-free in batman-adv, from Sven Eckelmann. 2) Fix packet stats for fast-RX path, from Joannes Berg. 3) Netfilter's ip_route_me_harder() doesn't handle request sockets properly, fix from Florian Westphal. 4) Fix sendmsg deadlock in rxrpc, from David Howells. 5) Add missing RCU locking to transport hashtable scan, from Xin Long. 6) Fix potential packet loss in mlxsw driver, from Ido Schimmel. 7) Fix race in NAPI handling between poll handlers and busy polling, from Eric Dumazet. 8) TX path in vxlan and geneve need proper RCU locking, from Jakub Kicinski. 9) SYN processing in DCCP and TCP need to disable BH, from Eric Dumazet. 10) Properly handle net_enable_timestamp() being invoked from IRQ context, also from Eric Dumazet. 11) Fix crash on device-tree systems in xgene driver, from Alban Bedel. 12) Do not call sk_free() on a locked socket, from Arnaldo Carvalho de Melo. 13) Fix use-after-free in netvsc driver, from Dexuan Cui. 14) Fix max MTU setting in bonding driver, from WANG Cong. 15) xen-netback hash table can be allocated from softirq context, so use GFP_ATOMIC. From Anoob Soman. 16) Fix MAC address change bug in bgmac driver, from Hari Vyas. 17) strparser needs to destroy strp_wq on module exit, from WANG Cong. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (69 commits) strparser: destroy workqueue on module exit sfc: fix IPID endianness in TSOv2 sfc: avoid max() in array size rds: remove unnecessary returned value check rxrpc: Fix potential NULL-pointer exception nfp: correct DMA direction in XDP DMA sync nfp: don't tell FW about the reserved buffer space net: ethernet: bgmac: mac address change bug net: ethernet: bgmac: init sequence bug xen-netback: don't vfree() queues under spinlock xen-netback: keep a local pointer for vif in backend_disconnect() netfilter: nf_tables: don't call nfnetlink_set_err() if nfnetlink_send() fails netfilter: nft_set_rbtree: incorrect assumption on lower interval lookups netfilter: nf_conntrack_sip: fix wrong memory initialisation can: flexcan: fix typo in comment can: usb_8dev: Fix memory leak of priv->cmd_msg_buffer can: gs_usb: fix coding style can: gs_usb: Don't use stack memory for USB transfers ixgbe: Limit use of 2K buffers on architectures with 256B or larger cache lines ixgbe: update the rss key on h/w, when ethtool ask for it ...
2017-03-04Merge tag 'staging-4.11-rc1-part2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging/IIO driver fixes from Greg KH: "Here are a few small staging and IIO driver fixes for issues that showed up after the big set if changes you merged last week. Nothing major, just small bugs resolved in some IIO drivers, a lustre allocation fix, and some RaspberryPi driver fixes for reported problems, as well as a MAINTAINERS entry update. All of these have been in linux-next for a week with no reported issues" * tag 'staging-4.11-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: staging: fsl-mc: fix warning in DT ranges parser MAINTAINERS: Remove Noralf Trønnes as fbtft maintainer staging: vchiq_2835_arm: Make cache-line-size a required DT property staging: bcm2835/mmal-vchiq: unlock on error in buffer_from_host() staging/lustre/lnet: Fix allocation size for sv_cpt_data iio: adc: xilinx: Fix error handling iio: 104-quad-8: Fix off-by-one error when addressing flag register iio: adc: handle unknow of_device_id data
2017-03-04Merge branch 'linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto fixes from Herbert Xu: - vmalloc stack regression in CCM - Build problem in CRC32 on ARM - Memory leak in cavium - Missing Kconfig dependencies in atmel and mediatek - XTS Regression on some platforms (s390 and ppc) - Memory overrun in CCM test vector * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: vmx - Use skcipher for xts fallback crypto: vmx - Use skcipher for cbc fallback crypto: testmgr - Pad aes_ccm_enc_tv_template vector crypto: arm/crc32 - add build time test for CRC instruction support crypto: arm/crc32 - fix build error with outdated binutils crypto: ccm - move cbcmac input off the stack crypto: xts - Propagate NEED_FALLBACK bit crypto: api - Add crypto_requires_off helper crypto: atmel - CRYPTO_DEV_MEDIATEK should depend on HAS_DMA crypto: atmel - CRYPTO_DEV_ATMEL_TDES and CRYPTO_DEV_ATMEL_SHA should depend on HAS_DMA crypto: cavium - fix leak on curr if curr->head fails to be allocated crypto: cavium - Fix couple of static checker errors
2017-03-03Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds
Pull more SCSI updates from James Bottomley: "This is the set of stuff that didn't quite make the initial pull and a set of fixes for stuff which did. The new stuff is basically lpfc (nvme), qedi and aacraid. The fixes cover a lot of previously submitted stuff, the most important of which probably covers some of the failing irq vectors allocation and other fallout from having the SCSI command allocated as part of the block allocation functions" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (59 commits) scsi: qedi: Fix memory leak in tmf response processing. scsi: aacraid: remove redundant zero check on ret scsi: lpfc: use proper format string for dma_addr_t scsi: lpfc: use div_u64 for 64-bit division scsi: mac_scsi: Fix MAC_SCSI=m option when SCSI=m scsi: cciss: correct check map error. scsi: qla2xxx: fix spelling mistake: "seperator" -> "separator" scsi: aacraid: Fixed expander hotplug for SMART family scsi: mpt3sas: switch to pci_alloc_irq_vectors scsi: qedf: fixup compilation warning about atomic_t usage scsi: remove scsi_execute_req_flags scsi: merge __scsi_execute into scsi_execute scsi: simplify scsi_execute_req_flags scsi: make the sense header argument to scsi_test_unit_ready mandatory scsi: sd: improve TUR handling in sd_check_events scsi: always zero sshdr in scsi_normalize_sense scsi: scsi_dh_emc: return success in clariion_std_inquiry() scsi: fix memory leak of sdpk on when gd fails to allocate scsi: sd: make sd_devt_release() static scsi: qedf: Add QLogic FastLinQ offload FCoE driver framework. ...
2017-03-03Merge branch 'libnvdimm-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm fixes from Dan Williams: "A fix and regression test case for nvdimm namespace label compatibility. Details: - An "nvdimm namespace label" is metadata on an nvdimm that provisions dimm capacity into a "namespace" that can host a block device / dax-filesytem, or a device-dax character device. A namespace is an object that other operating environment and platform firmware needs to comprehend for capabilities like booting from an nvdimm. The label metadata contains a checksum that Linux was not calculating correctly leading to other environments rejecting the Linux label. These have received a build success notification from the kbuild robot, and a positive test result from Nick who reported the problem" * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: nfit, libnvdimm: fix interleave set cookie calculation tools/testing/nvdimm: make iset cookie predictable
2017-03-03Merge tag 'pci-v4.11-fixes-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI fixes from Bjorn Helgaas: - fix NULL pointer dereferences in many DesignWare-based drivers due to refactoring error - fix Altera config write breakage due to my refactoring error * tag 'pci-v4.11-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: altera: Fix TLP_CFG_DW0 for TLP write PCI: dwc: Fix crashes seen due to missing assignments
2017-03-04cpufreq: intel_pstate: Avoid triggering cpu_frequency tracepoint unnecessarilyRafael J. Wysocki
In the passive mode the cpu_frequency trace event is already triggered by the cpufreq core or by scaling governors, so intel_pstate should not trigger it once again for the same P-state updates. In addition to that, the frequency returned by intel_cpufreq_fast_switch() and passed via freqs.new from intel_cpufreq_target() to cpufreq_freq_transition_end() should reflect the P-state actually set, so make that happen. Fixes: 001c76f05b01 (cpufreq: intel_pstate: Generic governors support) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-03-04cpufreq: intel_pstate: Fix intel_cpufreq_verify_policy()Rafael J. Wysocki
The intel_pstate_update_perf_limits() called from intel_cpufreq_verify_policy() may cause global P-state limits to change which is generally confusing and unnecessary. In the passive mode the global limits are only applied to the frequency selected by the scaling governor (they are not taken into account by governors when making decisions anyway), so making them follow the per-policy limits serves no purpose and may go against user expectations (as it generally causes the global attributes in sysfs to change even though they have not been written to in some cases). Fix that by dropping the intel_pstate_update_perf_limits() invocation from intel_cpufreq_verify_policy() (which also reduces the code size by a few lines). This change does not affect the per-CPU limits case, because those limits allow any P-state to be set by default in the passive mode and it removes the only piece of code updating them in that mode, so the per-policy settings will be the only ones taken into account in that case as expected. Fixes: 001c76f05b01 (cpufreq: intel_pstate: Generic governors support) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-03-04cpufreq: intel_pstate: Do not use performance_limits in passive modeRafael J. Wysocki
Using performance_limits in the passive mode doesn't make sense, because in that mode the global limits are applied to the frequency selected by the scaling governor. The maximum and minimum P-state limits in performance_limits are both set to 100 percent which will put all CPUs into the turbo range regardless of what governor is used and what frequencies are selected by it (that is particularly undesirable on CPUs with the generic powersave governor attached). For this reason, make intel_pstate_register_driver() always point limits to powersave_limits in the passive mode. Fixes: 001c76f05b01 (cpufreq: intel_pstate: Generic governors support) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-03-03Merge branch 'parisc-4.11-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull parisc fixes and cleanups from Helge Deller: "Nothing really important in this patchset: fix resource leaks in error paths, coding style cleanups and code removal" * 'parisc-4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Remove flush_user_dcache_range and flush_user_icache_range parisc: fix a printk parisc: ccio-dma: Handle return NULL error from ioremap_nocache parisc: Define access_ok() as macro parisc: eisa: Fix resource leaks in error paths parisc: eisa: Remove coding style errors
2017-03-03Merge tag 'armsoc-late' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC late DT updates from Arnd Bergmann: "These updates have been kept in a separate branch mostly because they rely on updates to the respective clk drivers to keep the shared header files in sync. This includes two branches for arm64 dt updates, both following up on earlier changes for the same platforms that are already merged: Samsung: - add USB3 support in Exynos7 - minor PM related updates Amlogic: - new machines: WeTek Set-top-boxes - various devices added to DT There are also a couple of bugfixes that trickled in since the start of the merge window: - The moxart_defconfig was not building the intended platform - CPU-hotplug was broken on ux500 - Coresight was broken on Juno (never worked)" * tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (26 commits) ARM: deconfig: fix the moxart defconfig ARM: ux500: resume the second core properly arm64: dts: juno: update definition for programmable replicator arm64: dts: exynos: Add regulators for Vbus and Vbus-Boost arm64: dts: exynos: Add USB 3.0 controller node for Exynos7 arm64: dts: exynos: Use macros for pinctrl configuration on Exynos7 pinctrl: dt-bindings: samsung: Add Exynos7 specific pinctrl macro definitions arm64: dts: exynos: Add initial configuration for DISP clocks for TM2/TM2e ARM64: dts: meson-gxbb-p200: add ADC laddered keys ARM64: dts: meson: meson-gx: add the SAR ADC ARM64: dts: meson-gxl: add the pwm_ao_b pin ARM64: dts: meson-gx: add the missing pwm_AO_ab node clk: gxbb: fix CLKID_ETH defined twice ARM64: dts: meson-gxl: rename Nexbox A95x for consistency clk: gxbb: add the SAR ADC clocks and expose them dt-bindings: amlogic: Add WeTek boards ARM64: dts: meson-gxbb: Add support for WeTek Hub and Play dt-bindings: vendor-prefix: Add wetek vendor prefix ARM64: dts: meson-gxm: Rename q200 and q201 DT files for consistency ARM64: dts: meson-gx: Add HDMI HPD/DDC pinctrl nodes ...
2017-03-03Merge branch 'rebased-statx' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs 'statx()' update from Al Viro. This adds the new extended stat() interface that internally subsumes our previous stat interfaces, and allows user mode to specify in more detail what kind of information it wants. It also allows for some explicit synchronization information to be passed to the filesystem, which can be relevant for network filesystems: is the cached value ok, or do you need open/close consistency, or what? From David Howells. Andreas Dilger points out that the first version of the extended statx interface was posted June 29, 2010: https://www.spinics.net/lists/linux-fsdevel/msg33831.html * 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: statx: Add a system call to make enhanced file info available
2017-03-03Merge branch 'for-linus' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block layer fixes from Jens Axboe: "A collection of fixes for this merge window, either fixes for existing issues, or parts that were waiting for acks to come in. This pull request contains: - Allocation of nvme queues on the right node from Shaohua. This was ready long before the merge window, but waiting on an ack from Bjorn on the PCI bit. Now that we have that, the three patches can go in. - Two fixes for blk-mq-sched with nvmeof, which uses hctx specific request allocations. This caused an oops. One part from Sagi, one part from Omar. - A loop partition scan deadlock fix from Omar, fixing a regression in this merge window. - A three-patch series from Keith, closing up a hole on clearing out requests on shutdown/resume. - A stable fix for nbd from Josef, fixing a leak of sockets. - Two fixes for a regression in this window from Jan, fixing a problem with one of his earlier patches dealing with queue vs bdi life times. - A fix for a regression with virtio-blk, causing an IO stall if scheduling is used. From me. - A fix for an io context lock ordering problem. From me" * 'for-linus' of git://git.kernel.dk/linux-block: block: Move bdi_unregister() to del_gendisk() blk-mq: ensure that bd->last is always set correctly block: don't call ioc_exit_icq() with the queue lock held for blk-mq block: Initialize bd_bdi on inode initialization loop: fix LO_FLAGS_PARTSCAN hang nvme: Complete all stuck requests blk-mq: Provide freeze queue timeout blk-mq: Export blk_mq_freeze_queue_wait nbd: stop leaking sockets blk-mq: move update of tags->rqs to __blk_mq_alloc_request() blk-mq: kill blk_mq_set_alloc_data() blk-mq: make blk_mq_alloc_request_hctx() allocate a scheduler request blk-mq-sched: Allocate sched reserved tags as specified in the original queue tagset nvme: allocate nvme_queue in correct node PCI: add an API to get node from vector blk-mq: allocate blk_mq_tags and requests in correct node
2017-03-03Merge branch 'WIP.sched-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull sched.h split-up from Ingo Molnar: "The point of these changes is to significantly reduce the <linux/sched.h> header footprint, to speed up the kernel build and to have a cleaner header structure. After these changes the new <linux/sched.h>'s typical preprocessed size goes down from a previous ~0.68 MB (~22K lines) to ~0.45 MB (~15K lines), which is around 40% faster to build on typical configs. Not much changed from the last version (-v2) posted three weeks ago: I eliminated quirks, backmerged fixes plus I rebased it to an upstream SHA1 from yesterday that includes most changes queued up in -next plus all sched.h changes that were pending from Andrew. I've re-tested the series both on x86 and on cross-arch defconfigs, and did a bisectability test at a number of random points. I tried to test as many build configurations as possible, but some build breakage is probably still left - but it should be mostly limited to architectures that have no cross-compiler binaries available on kernel.org, and non-default configurations" * 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (146 commits) sched/headers: Clean up <linux/sched.h> sched/headers: Remove #ifdefs from <linux/sched.h> sched/headers: Remove the <linux/topology.h> include from <linux/sched.h> sched/headers, hrtimer: Remove the <linux/wait.h> include from <linux/hrtimer.h> sched/headers, x86/apic: Remove the <linux/pm.h> header inclusion from <asm/apic.h> sched/headers, timers: Remove the <linux/sysctl.h> include from <linux/timer.h> sched/headers: Remove <linux/magic.h> from <linux/sched/task_stack.h> sched/headers: Remove <linux/sched.h> from <linux/sched/init.h> sched/core: Remove unused prefetch_stack() sched/headers: Remove <linux/rculist.h> from <linux/sched.h> sched/headers: Remove the 'init_pid_ns' prototype from <linux/sched.h> sched/headers: Remove <linux/signal.h> from <linux/sched.h> sched/headers: Remove <linux/rwsem.h> from <linux/sched.h> sched/headers: Remove the runqueue_is_locked() prototype sched/headers: Remove <linux/sched.h> from <linux/sched/hotplug.h> sched/headers: Remove <linux/sched.h> from <linux/sched/debug.h> sched/headers: Remove <linux/sched.h> from <linux/sched/nohz.h> sched/headers: Remove <linux/sched.h> from <linux/sched/stat.h> sched/headers: Remove the <linux/gfp.h> include from <linux/sched.h> sched/headers: Remove <linux/rtmutex.h> from <linux/sched.h> ...
2017-03-03sfc: fix IPID endianness in TSOv2Edward Cree
The value we read from the header is in network byte order, whereas EFX_POPULATE_QWORD_* takes values in host byte order (which it then converts to little-endian, as MCDI is little-endian). Fixes: e9117e5099ea ("sfc: Firmware-Assisted TSO version 2") Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-03sfc: avoid max() in array sizeEdward Cree
It confuses sparse, which thinks the size isn't constant. Let's achieve the same thing with a BUILD_BUG_ON, since we know which one should be bigger and don't expect them ever to change. Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-03Merge tag 'linux-can-fixes-for-4.11-20170303' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can Marc Kleine-Budde says: ==================== pull-request: can 2017-03-03 this is a pull request for the upcoming v4.11 release. There are two patches by Ethan Zonca for the gs_usb driver, the first one fixes the memory used for USB transfers, the second one the coding style. The last two patches are by me, one fixing a memory leak in the usb_8dev driver the other a typo in the flexcan driver. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-03nfp: correct DMA direction in XDP DMA syncJakub Kicinski
dma_sync_single_for_*() takes the direction in which the buffer was mapped, not the direction of the sync. We should sync XDP buffers bidirectionally. Fixes: ecd63a0217d5 ("nfp: add XDP support in the driver") Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-03nfp: don't tell FW about the reserved buffer spaceJakub Kicinski
Since commit c0f031bc8866 ("nfp_net: use alloc_frag() and build_skb()") we are allocating buffers which have to hold both the data and skb to be created in place by build_skb(). FW should only be told about the buffer space it can DMA to, that is without the build_skb() headroom and tailroom. Note: firmware applications should validate the buffers against both MTU and free list buffer size so oversized packets would not pass through the NIC anyway. Fixes: c0f031bc8866 ("nfp: use alloc_frag() and build_skb()") Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-03net: ethernet: bgmac: mac address change bugHari Vyas
ndo_set_mac_address() passes struct sockaddr * as 2nd parameter to bgmac_set_mac_address() but code assumed u8 *. This caused two bytes chopping and the wrong mac address was configured. Signed-off-by: Hari Vyas <hariv@broadcom.com> Signed-off-by: Jon Mason <jon.mason@broadcom.com> Fixes: 4e209001b86 ("bgmac: write mac address to hardware in ndo_set_mac_address") Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-03net: ethernet: bgmac: init sequence bugJon Mason
Fix a bug in the 'bgmac' driver init sequence that blind writes for init sequence where it should preserve most bits other than the ones it is deliberately manipulating. The code now checks to see if the adapter needs to be brought out of reset (where as before it was doing an IDM write to bring it out of reset regardless of whether it was in reset or not). Also, removed unnecessary usleeps (as there is already a read present to flush the IDM writes). Signed-off-by: Zac Schroff <zschroff@broadcom.com> Signed-off-by: Jon Mason <jon.mason@broadcom.com> Fixes: f6a95a24957 ("net: ethernet: bgmac: Add platform device support") Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-03xen-netback: don't vfree() queues under spinlockPaul Durrant
This leads to a BUG of the following form: [ 174.512861] switch: port 2(vif3.0) entered disabled state [ 174.522735] BUG: sleeping function called from invalid context at /home/build/linux-linus/mm/vmalloc.c:1441 [ 174.523451] in_atomic(): 1, irqs_disabled(): 0, pid: 28, name: xenwatch [ 174.524131] CPU: 1 PID: 28 Comm: xenwatch Tainted: G W 4.10.0upstream-11073-g4977ab6-dirty #1 [ 174.524819] Hardware name: MSI MS-7680/H61M-P23 (MS-7680), BIOS V17.0 03/14/2011 [ 174.525517] Call Trace: [ 174.526217] show_stack+0x23/0x60 [ 174.526899] dump_stack+0x5b/0x88 [ 174.527562] ___might_sleep+0xde/0x130 [ 174.528208] __might_sleep+0x35/0xa0 [ 174.528840] ? _raw_spin_unlock_irqrestore+0x13/0x20 [ 174.529463] ? __wake_up+0x40/0x50 [ 174.530089] remove_vm_area+0x20/0x90 [ 174.530724] __vunmap+0x1d/0xc0 [ 174.531346] ? delete_object_full+0x13/0x20 [ 174.531973] vfree+0x40/0x80 [ 174.532594] set_backend_state+0x18a/0xa90 [ 174.533221] ? dwc_scan_descriptors+0x24d/0x430 [ 174.533850] ? kfree+0x5b/0xc0 [ 174.534476] ? xenbus_read+0x3d/0x50 [ 174.535101] ? xenbus_read+0x3d/0x50 [ 174.535718] ? xenbus_gather+0x31/0x90 [ 174.536332] ? ___might_sleep+0xf6/0x130 [ 174.536945] frontend_changed+0x6b/0xd0 [ 174.537565] xenbus_otherend_changed+0x7d/0x80 [ 174.538185] frontend_changed+0x12/0x20 [ 174.538803] xenwatch_thread+0x74/0x110 [ 174.539417] ? woken_wake_function+0x20/0x20 [ 174.540049] kthread+0xe5/0x120 [ 174.540663] ? xenbus_printf+0x50/0x50 [ 174.541278] ? __kthread_init_worker+0x40/0x40 [ 174.541898] ret_from_fork+0x21/0x2c [ 174.548635] switch: port 2(vif3.0) entered disabled state This patch defers the vfree() until after the spinlock is released. Reported-by: Juergen Gross <jgross@suse.com> Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-03xen-netback: keep a local pointer for vif in backend_disconnect()Paul Durrant
This patch replaces use of 'be->vif' with 'vif' and hence generally makes the function look tidier. No semantic change. Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-03can: flexcan: fix typo in commentMarc Kleine-Budde
This patch fixes the typo "Disble" -> "Disable". Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-03-03can: usb_8dev: Fix memory leak of priv->cmd_msg_bufferMarc Kleine-Budde
The priv->cmd_msg_buffer is allocated in the probe function, but never kfree()ed. This patch converts the kzalloc() to resource-managed kzalloc. Cc: linux-stable <stable@vger.kernel.org> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2017-03-03can: gs_usb: fix coding styleEthan Zonca
This patch fixes five minor style issues, spaces are between bitwise OR operators. Signed-off-by: Ethan Zonca <e@ethanzonca.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>