- 15 May, 2014 40 commits
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Alan Stern authored
commit a2ff864b upstream. The code in hcd-pci.c that matches up EHCI controllers with their companion UHCI or OHCI controllers assumes that the private drvdata fields don't get set too early. However, it turns out that this field gets set by usb_create_hcd(), before hcd-pci expects it, and this can result in a crash when two controllers are probed in parallel (as can happen when a new controller card is hotplugged). The companions_rwsem lock was supposed to prevent this sort of thing, but usb_create_hcd() is called outside the scope of the rwsem. A simple solution is to check that the root-hub pointer has been initialized as well as the drvdata field. This doesn't happen until usb_add_hcd() is called; that call and the check are both protected by the rwsem. This patch should be applied to stable kernels from 3.10 onward. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Reported-by:
Stefani Seibold <stefani@seibold.net> Tested-by:
Jiri Slaby <jslaby@suse.cz>
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Jean-Jacques Hiblot authored
commit 4f4bde1d upstream. The second parameter of of_read_number() is not the index, but a size. As it happens, in this case it may work just fine because of the conversion to u32 and the favorable endianness on this architecture. Fixes: 11be6547 ("PCI: mvebu: Adapt to the new device tree layout") Tested-by:
Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by:
Jean-Jacques Hiblot <jjhiblot@traphandler.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> Acked-by:
Jason Cooper <jason@lakedaemon.net> Signed-off-by:
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Charles Keepax authored
commit a35ff286 upstream. Both 5102 and 8997 have the regulator capable of supplying 1.8V, and the voltage step from the 5110 regulator is different from what is specified in the default description. This patch updates the default regulator description to match 5110 and selects the 1.8V capable description for 8997. Signed-off-by:
Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by:
Mark Brown <broonie@linaro.org> Signed-off-by:
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H. Peter Anvin authored
commit b3b42ac2 upstream. The IRET instruction, when returning to a 16-bit segment, only restores the bottom 16 bits of the user space stack pointer. We have a software workaround for that ("espfix") for the 32-bit kernel, but it relies on a nonzero stack segment base which is not available in 32-bit mode. Since 16-bit support is somewhat crippled anyway on a 64-bit kernel (no V86 mode), and most (if not quite all) 64-bit processors support virtualization for the users who really need it, simply reject attempts at creating a 16-bit segment when running on top of a 64-bit kernel. Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/n/tip-kicdm89kzw9lldryb1br9od0@git.kernel.orgSigned-off-by:
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Petr Mladek authored
commit 12729f14 upstream. If a failure occurs while modifying ftrace function, it bails out and will remove the tracepoints to be back to what the code originally was. There is missing the final sync run across the CPUs after the fix up is done and before the ftrace int3 handler flag is reset. Here's the description of the problem: CPU0 CPU1 ---- ---- remove_breakpoint(); modifying_ftrace_code = 0; [still sees breakpoint] <takes trap> [sees modifying_ftrace_code as zero] [no breakpoint handler] [goto failed case] [trap exception - kernel breakpoint, no handler] BUG() Link: http://lkml.kernel.org/r/1393258342-29978-2-git-send-email-pmladek@suse.cz Fixes: 8a4d0a68 "ftrace: Use breakpoint method to update ftrace caller" Acked-by:
Frederic Weisbecker <fweisbec@gmail.com> Acked-by:
Petr Mladek <pmladek@suse.cz> Signed-off-by:
Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
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Larry Finger authored
commit 9452bf56 upstream. This makes the follow-on check for psta != NULL pointless and makes the whole exercise rather pointless. This is another case of why blindly zero-initializing variables when they are declared is bad. Reported-by:
Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by:
Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by:
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H Hartley Sweeten authored
commit 2704f807 upstream. In usbdux_ao_cmd(), the channels for the command are transfered from the cmd->chanlist and stored in the private data 'ao_chanlist'. The channel numbers are bit-shifted when stored so that they become the "command" that is transfered to the device. The channel to command conversion results in the 'ao_chanlist' having these values for the channels: channel 0 -> ao_chanlist = 0x00 channel 1 -> ao_chanlist = 0x40 channel 2 -> ao_chanlist = 0x80 channel 3 -> ao_chanlist = 0xc0 The problem is, the usbduxsub_ao_isoc_irq() function uses the 'chan' value from 'ao_chanlist' to access the 'ao_readback' array in the private data. So instead of accessing the array as 0, 1, 2, 3, it accesses it as 0x00, 0x40, 0x80, 0xc0. Fix this by storing the raw channel number in 'ao_chanlist' and doing the bit-shift when creating the command. Fixes: a998a3db "staging: comedi: usbdux: cleanup the private data 'outBuffer'" Signed-off-by:
H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by:
Ian Abbott <abbotti@mev.co.uk> Acked-by:
Bernd Porr <mail@berndporr.me.uk> Signed-off-by:
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Larry Finger authored
commit f764cd68 upstream. Zero-initializing ether_type masked that the ether type would never be obtained for 8021x packets and the comparison against eapol_type would always fail. Reported-by:
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Himangi Saraogi authored
commit abe5d64d upstream. This patch fixes the following sparse warning : drivers/staging/serqt_usb2/serqt_usb2.c:727:40: warning: restricted __le16 degrades to integer Signed-off-by:
Himangi Saraogi <himangi774@gmail.com> Signed-off-by:
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David Fries authored
commit 6b355b33 upstream. Previous logic, if (avail > 8) { store slave; return; } send data; clear; The logic error is, if there isn't space send the buffer and clear, but the slave wasn't added to the now empty buffer loosing that slave id. It also should have been "if (avail >= 8)" because when it is 8, there is space. Instead, if there isn't space send and clear the buffer, then there is always space for the slave id. Signed-off-by:
David Fries <David@Fries.net> Acked-by:
Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by:
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Guenter Roeck authored
commit 204747c9 upstream. On PXT and COMe-cPC2 boards it is observed that the hardware mutex is acquired but not being released during initialization. This can result in a hang-up during boot if the driver is built into the kernel. Releasing the mutex twice if it was acquired fixes the problem. Subsequent request/release cycles work as expected, so the fix is only needed during initialization. Reviewed-by:
Michael Brunner <michael.brunner@kontron.com> Tested-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
Lee Jones <lee.jones@linaro.org> Signed-off-by:
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Krzysztof Kozlowski authored
commit 483e2dfd upstream. Fixes: 4aab3fad ("mfd: tps65910: Move interrupt implementation code to mfd file") tps65910_irq_init() sets 'tps65910->chip_irq' before calling regmap_add_irq_chip(). If the regmap_add_irq_chip() call fails in memory allocation of regmap_irq_chip_data members then: 1. The 'tps65910->chip_irq' will still hold some value 2. 'tps65910->irq_data' will be pointing to already freed memory (because regmap_add_irq_chip() will free it on error) This results in invalid memory access during driver remove because the tps65910_irq_exit() tests whether 'tps65910->chip_irq' is not zero. Signed-off-by:
Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by:
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Krzysztof Kozlowski authored
commit 97dc4ed3 upstream. During probe the driver allocates dummy I2C devices for RTC, haptic and MUIC with i2c_new_dummy() but it does not check the return value of this calls. In case of error (i2c_new_device(): memory allocation failure or I2C address cannot be used) this function returns NULL which is later used by i2c_unregister_device(). If i2c_new_dummy() fails for RTC, haptic or MUIC devices, fail also the probe for main MFD driver. Signed-off-by:
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Krzysztof Kozlowski authored
commit ed26f87b upstream. During probe the driver allocates dummy I2C device for RTC with i2c_new_dummy() but it does not check the return value of this call. In case of error (i2c_new_device(): memory allocation failure or I2C address cannot be used) this function returns NULL which is later used by i2c_unregister_device(). If i2c_new_dummy() fails for RTC device, fail also the probe for main MFD driver. Signed-off-by:
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Krzysztof Kozlowski authored
commit 96cf3ded upstream. During probe the driver allocates dummy I2C devices for RTC and ADC with i2c_new_dummy() but it does not check the return value of this calls. In case of error (i2c_new_device(): memory allocation failure or I2C address cannot be used) this function returns NULL which is later used by i2c_unregister_device(). If i2c_new_dummy() fails for RTC or ADC devices, fail also the probe for main MFD driver. Signed-off-by:
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Krzysztof Kozlowski authored
commit ad09dd6a upstream. During probe the driver allocates dummy I2C devices for MUIC and haptic with i2c_new_dummy() but it does not check the return value of this calls. In case of error (i2c_new_device(): memory allocation failure or I2C address cannot be used) this function returns NULL which is later used by devm_regmap_init_i2c() and i2c_unregister_device(). If i2c_new_dummy() fails for MUIC or haptic devices, fail also the probe for main MFD driver. Signed-off-by:
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Krzysztof Kozlowski authored
commit b9e183a1 upstream. During probe the driver allocates dummy I2C device for RTC with i2c_new_dummy() but it does not check the return value of this call. In case of error (i2c_new_device(): memory allocation failure or I2C address cannot be used) this function returns NULL which is later used by i2c_unregister_device(). If i2c_new_dummy() fails for RTC device, fail also the probe for main MFD driver. Signed-off-by:
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Krzysztof Kozlowski authored
commit 141050cf upstream. During probe the driver allocates two dummy I2C devices for subchips in function pm800_pages_init(). Additionally this function allocates regmaps for these subchips. If any of these steps fail then these dummy I2C devices are not freed and resources leak. On pm800_pages_init() fail the driver must call pm800_pages_exit() to unregister dummy I2C devices. Signed-off-by:
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Krzysztof Kozlowski authored
commit a7ab1c8b upstream. During probe the driver allocates dummy I2C device for companion chip and then allocates a regmap for it. If regmap_init_i2c() fails then the I2C driver (allocated with i2c_new_dummy()) is not freed and this resource leaks. Signed-off-by:
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Krzysztof Kozlowski authored
commit 159ce52a upstream. During probe the driver allocates dummy I2C device for companion chip with i2c_new_dummy() but it does not check the return value of this call. In case of error (i2c_new_device(): memory allocation failure or I2C address cannot be used) this function returns NULL which is later used by regmap_init_i2c(). If i2c_new_dummy() fails for companion device, fail also the probe for main MFD driver. Signed-off-by:
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Krzysztof Kozlowski authored
commit 65aba1e0 upstream. During probe the sec-core driver allocates dummy I2C device for RTC with i2c_new_dummy() but return value is not checked. In case of error (i2c_new_device(): memory allocation failure or I2C address cannot be used) this function returns NULL which is later used by devm_regmap_init_i2c() or i2c_unregister_device(). If i2c_new_dummy() fails for RTC device, fail also the probe for main MFD driver. Signed-off-by:
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Alexander Usyskin authored
commit 34ec4366 upstream. Ignore client writing state during cb completion to fix a memory leak. When moving cbs to the completion list we should not look at writing_state as this state can be already overwritten by next write, the fact that a cb is on the write waiting list means that it was already written to the HW and we can safely complete it. Same pays for wait in poll handler, we do not have to check the state wake is done after completion list processing. Signed-off-by:
Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by:
Tomas Winkler <tomas.winkler@intel.com> Signed-off-by:
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Tomas Winkler authored
commit 5e6533a6 upstream. NM and SPS FW types that may run on ME device on server platforms do not have valid MEI/HECI interface and driver should not be bound to it as this might lead to system hung. In practice not all BIOSes effectively hide such devices from the OS and in some cases it is not possible. We determine FW type by examining Host FW status registers in order to unbind the driver. In this patch we are adding check for ME on Cougar Point, Lynx Point Devices Signed-off-by:
Nikola Ciprich <nikola.ciprich@linuxbox.cz> Signed-off-by:
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Tomas Winkler authored
commit cc99ecfd upstream. Write callbacks are released on the write completed path but when file handler is closed before the writes are completed those are left dangling on write and write_waiting queues. We add mei_io_list_free function to perform this task Also move static functions to client.c form client.h Signed-off-by:
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Christian Borntraeger authored
commit 2955c83f upstream. Since commit 7c470539 (s390/kvm: avoid automatic sie reentry) we will run through the C code of KVM on host interrupts instead of just reentering the guest. This will result in additional ucontrol exits (at least HZ per second). Let handle a 0 intercept in the kernel and dont return to userspace, even if in ucontrol mode. Signed-off-by:
Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by:
Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by:
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Sebastian Ott authored
commit 2253e8d7 upstream. ccw consoles are in use before they can be properly registered with the driver core. For devices which are in use by a device driver we rely on the ccw_device's pointer to the driver callbacks to be valid. For ccw consoles this pointer is NULL until they are registered later during boot and we dereferenced this pointer. This worked by chance on 64 bit builds (cdev->drv was NULL but the optional callback cdev->drv->path_event was also NULL by coincidence) and was unnoticed until we received reports about boot failures on 31 bit systems. Fix it by initializing the driver pointer for ccw consoles. Reported-by:
Mike Frysinger <vapier@gentoo.org> Reported-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Reviewed-by:
Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Signed-off-by:
Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
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Uwe Kleine-König authored
commit 12f6dd86 upstream. Wolfram Sang pointed out that "efm32,$device" is non-standard. So use the common scheme and prefix device with "efm32-". The old compatible string is left in place until arch/arm/boot/dts/efm32* is fixed. Signed-off-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by:
Wolfram Sang <wsa@the-dreams.de> Signed-off-by:
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Lv Zheng authored
commit 61db45ca upstream. The original code was lost accidently, it was not generated along with the following commit of mechanism improvements and thus not get merged: Commit: d5a36100 Subject: ACPICA: Add mechanism for early object repairs on a per-name basis Adds the framework to allow object repairs very early in the return object analysis. Enables repairs like string->unicode, etc. This patch restores the implementation of the NULL element repair code for ACPI_RTYPE_NONE. In the original design, ACPI_RTYPE_NONE is defined to collect simple NULL object repairs. Lv Zheng. Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=67901Signed-off-by:
Lv Zheng <lv.zheng@intel.com> Signed-off-by:
Bob Moore <robert.moore@intel.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
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Kailang Yang authored
commit 8dc9abb9 upstream. Signed-off-by:
Kailang Yang <kailang@realtek.com> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Kailang Yang authored
commit 7c665932 upstream. Signed-off-by:
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Takashi Iwai authored
commit 415d555e upstream. The recent fixups for HP laptops to support the mute LED made the speaker output silent on some machines. It turned out that they use the NID 0x18 for the speaker while it's also used for controlling the LED via VREF bits although the current driver code blindly assumes that such a node is a mic pin (where 0x18 is usually so). This patch fixes the problem by only changing the VREF bits and keeping the other pin ctl bits. Reported-and-tested-by:
Hui Wang <hui.wang@canonical.com> Signed-off-by:
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Takashi Iwai authored
commit 4f8e9400 upstream. PCM pointer callbacks in ice1712 driver check the buffer size boundary wrongly between bytes and frames. This leads to PCM core warnings like: snd_pcm_update_hw_ptr0: 105 callbacks suppressed ALSA pcm_lib.c:352 BUG: pcmC3D0c:0, pos = 5461, buffer size = 5461, period size = 2730 This patch fixes these checks to be placed after the proper unit conversions. Signed-off-by:
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W. Trevor King authored
commit a4b7f21d upstream. The `lspci -nnvv` output contains (wrapped for line length): 00:1b.0 Audio device [0403]: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller [8086:1e20] (rev 04) Subsystem: ASUSTeK Computer Inc. Device [1043:115d] Signed-off-by:
W. Trevor King <wking@tremily.us> Signed-off-by:
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Thomas Petazzoni authored
commit a6e03dd4 upstream. The mvmdio driver accesses some register of the Ethernet unit. It therefore takes a reference and enables a clock. However, on Armada 370/XP, no clock specification was given in the Device Tree, which leads the mvmdio driver to fail when being used as a module and loaded before the mvneta driver: it tries to access a register from a hardware unit that isn't clocked. Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Acked-by:
Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by:
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Liu Hua authored
commit 56b700fd upstream. For vmcore generated by LPAE enabled kernel, user space utility such as crash needs additional infomation to parse. So this patch add arch_crash_save_vmcoreinfo as what PAE enabled i386 linux does. Reviewed-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
Liu Hua <sdu.liu@huawei.com> Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by:
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Xiangyu Lu authored
commit 80bb3ef1 upstream. In big-endian systems, "%1" get the most significant part of the value, cause the instruction to get the wrong result. When viewing ftrace record in big-endian ARM systems, we found that the timestamp errors: swapper-0 [001] 1325.970000: 0:120:R ==> [001] 16:120:R events/1 events/1-16 [001] 1325.970000: 16:120:S ==> [001] 0:120:R swapper swapper-0 [000] 1325.1000000: 0:120:R + [000] 15:120:R events/0 swapper-0 [000] 1325.1000000: 0:120:R ==> [000] 15:120:R events/0 swapper-0 [000] 1326.030000: 0:120:R + [000] 1150:120:R sshd swapper-0 [000] 1326.030000: 0:120:R ==> [000] 1150:120:R sshd When viewed ftrace records, it will call the do_div(n, base) function, which achieved arch/arm/include/asm/div64.h in. When n = 10000000, base = 1000000, in do_div(n, base) will execute "umull %Q0, %R0, %1, %Q2". Reviewed-by:
Dave Martin <Dave.Martin@arm.com> Reviewed-by:
Nicolas Pitre <nico@linaro.org> Signed-off-by:
Alex Wu <wuquanming@huawei.com> Signed-off-by:
Xiangyu Lu <luxiangyu@huawei.com> Signed-off-by:
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Christopher Covington authored
commit 95c52fe0 upstream. The kcmp system call was ported to ARM in commit 3f7d1fe1 "ARM: 7665/1: Wire up kcmp syscall". Fixes: 3f7d1fe1 ("ARM: 7665/1: Wire up kcmp syscall") Signed-off-by:
Christopher Covington <cov@codeaurora.org> Signed-off-by:
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Andrew Lunn authored
commit 12567bbd upstream. CPU_ARM926T should be selected if no other CPU is. Put the ! in the right place so this works. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Tested-by:
Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Fixes: 24e860fb ("ARM: multiplatform: always pick one CPU type") Signed-off-by:
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Will Deacon authored
commit b6ccb980 upstream. CPU_32v6 currently selects CPU_USE_DOMAINS if CPU_V6 and MMU. This is because ARM 1136 r0pX CPUs lack the v6k extensions, and therefore do not have hardware thread registers. The lack of these registers requires the kernel to update the vectors page at each context switch in order to write a new TLS pointer. This write must be done via the userspace mapping, since aliasing caches can lead to expensive flushing when using kmap. Finally, this requires the vectors page to be mapped r/w for kernel and r/o for user, which has implications for things like put_user which must trigger CoW appropriately when targetting user pages. The upshot of all this is that a v6/v7 kernel makes use of domains to segregate kernel and user memory accesses. This has the nasty side-effect of making device mappings executable, which has been observed to cause subtle bugs on recent cores (e.g. Cortex-A15 performing a speculative instruction fetch from the GIC and acking an interrupt in the process). This patch solves this problem by removing the remaining domain support from ARMv6. A new memory type is added specifically for the vectors page which allows that page (and only that page) to be mapped as user r/o, kernel r/w. All other user r/o pages are mapped also as kernel r/o. Patch co-developed with Russell King. Signed-off-by:
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Tomasz Figa authored
commit bfeda827 upstream. Apparently, if G3D regulator is powered off, the SoC cannot enter low power modes and just hangs. This patch fixes this by keeping the regulator always on when the system is running, as suggested by Exynos 4 User's Manual in case of Exynos4210/4x12 SoCs (Exynos5250 UM does not have such note, but observed behavior seems to confirm that it is true for this SoC as well). This fixes an issue preventing Arndale board from entering sleep mode observed since commit 346f372f clk: exynos5250: Add CLK_IGNORE_UNUSED flag for pmu clock that landed in kernel 3.10, which has fixed the clock driver to make the SoC actually try to enter the sleep mode. Signed-off-by:
Tomasz Figa <t.figa@samsung.com> Acked-by:
Kyungmin Park <kyungmin.park@samsung.com> Tested-by:
Tushar Behera <tushar.behera@linaro.org> Signed-off-by:
Kukjin Kim <kgene.kim@samsung.com> Signed-off-by:
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