- 22 Jul, 2013 37 commits
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Dmitry Torokhov authored
commit 148c1c8a upstream. The June 2013 Macbook Air (13'') has a new trackpad protocol; four new values are inserted in the header, and the mode switch is no longer needed. This patch adds support for the new devices. Reported-and-tested-by:
Brad Ford <plymouthffl@gmail.com> Signed-off-by:
Henrik Rydberg <rydberg@euromail.se> Signed-off-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Dmitry Torokhov authored
commit 9d9a04ee upstream. This patch adds keyboard support for MacbookAir6,2 as WELLSPRING8 (0x0291, 0x0292, 0x0293). The touchpad is handled in a separate bcm5974 patch, as usual. Reported-and-tested-by:
Jiri Kosina <jkosina@suse.cz> Signed-off-by:
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Rafael J. Wysocki authored
commit 91bdad0b upstream. The role of acpi_bus_update_power() is to update the given ACPI device object's power.state field to reflect the current physical state of the device (as inferred from the configuration of power resources and _PSC, if available). For this purpose it calls acpi_device_set_power() that should update the power resources' reference counters and set power.state as appropriate. However, that doesn't work if the "new" state is D1, D2 or D3hot and the the current value of power.state means D3cold, because in that case acpi_device_set_power() will refuse to transition the device from D3cold to non-D0. To address this problem, make acpi_bus_update_power() call acpi_power_transition() directly to update the power resources' reference counters and only use acpi_device_set_power() to put the device into D0 if the current physical state of it cannot be determined. Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
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Lv Zheng authored
commit 7cec7048 upstream. Previous implementation incorrectly used the ACPI 5.0 extended sleep registers if they were simply populated. This caused problems on some non-HW-reduced machines. As per the ACPI spec, they should only be used if the HW-reduced bit is set. Lv Zheng, ACPICA BZ 1020. Reported-by:
Daniel Rowe <bart@fathom13.com> References: https://bugzilla.kernel.org/show_bug.cgi?id=54181 References: https://bugs.acpica.org/show_bug.cgi?id=1020Bisected-by:
Brint E. Kriebel <kernel@bekit.net> Signed-off-by:
Lv Zheng <lv.zheng@intel.com> Signed-off-by:
Bob Moore <robert.moore@intel.com> Signed-off-by:
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Lan Tianyu authored
commit eff9a4b6 upstream. HP Folio 13's BIOS defines CMOS RTC Operation Region and the EC's _REG method will access that region. To allow the CMOS RTC region handler to be installed before the EC _REG method is first invoked, add ec_skip_dsdt_scan() as HP Folio 13's callback to ec_dmi_table. References: https://bugzilla.kernel.org/show_bug.cgi?id=54621Reported-and-tested-by:
Stefan Nagy <public@stefan-nagy.at> Signed-off-by:
Lan Tianyu <tianyu.lan@intel.com> Signed-off-by:
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Lan Tianyu authored
commit 2fa97feb upstream. On HP Folio 13-2000, the BIOS defines a CMOS RTC Operation Region and the EC's _REG methord accesses that region. Thus an appropriate address space handler must be registered for that region before the EC driver is loaded. Introduce a mechanism for adding CMOS RTC address space handlers. Register an ACPI scan handler for CMOS RTC devices such that, when a device of that kind is detected during an ACPI namespace scan, a common CMOS RTC operation region address space handler will be installed for it. References: https://bugzilla.kernel.org/show_bug.cgi?id=54621Reported-and-tested-by:
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Axel Lin authored
commit 29ecd78c upstream. In the disable AIE irq code path, current code passes "1" to enable parameter of rv3029c2_rtc_i2c_alarm_set_irq(). Thus it does not disable AIE irq. Signed-off-by:
Axel Lin <axel.lin@ingics.com> Acked-by:
Heiko Schocher <hs@denx.de> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
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Ben Hutchings authored
commit 2779db8d upstream. Commit 02725e74 ('genirq: Use irq_get/put functions'), inadvertently changed can_request_irq() to return 0 for IRQs that have no action. This causes pcibios_lookup_irq() to select only IRQs that already have an action with IRQF_SHARED set, or to fail if there are none. Change can_request_irq() to return 1 for IRQs that have no action (if the first two conditions are met). Reported-by:
Bjarni Ingi Gislason <bjarniig@rhi.hi.is> Tested-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is> (against 3.2) Signed-off-by:
Ben Hutchings <ben@decadent.org.uk> Cc: 709647@bugs.debian.org Link: http://bugs.debian.org/709647 Link: http://lkml.kernel.org/r/1372383630.23847.40.camel@deadeye.wl.decadent.org.ukSigned-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Konrad Rzeszutek Wilk authored
commit 098b1aea upstream. There are two tool-stack that can instruct the Xen PCI frontend and backend to change states: 'xm' (Python code with a daemon), and 'xl' (C library - does not keep state changes). With the 'xm', the path to disconnect a single PCI device (xm pci-detach <guest> <BDF>) is: 4(Connected)->7(Reconfiguring*)-> 8(Reconfigured)-> 4(Connected)->5(Closing*). The * is for states that the tool-stack sets. For 'xl', it is similar: 4(Connected)->7(Reconfiguring*)-> 8(Reconfigured)-> 4(Connected) Both of them also tear down the XenBus structure, so the backend state ends up going in the 3(Initialised) and calls pcifront_xenbus_remove. When a PCI device is plugged back in (xm pci-attach <guest> <BDF>) both of them follow the same pattern: 2(InitWait*), 3(Initialized*), 4(Connected*)->4(Connected). [xen-pcifront ignores the 2,3 state changes and only acts when 4 (Connected) has been reached] Note that this is for a _single_ PCI device. If there were two PCI devices and only one was disconnected 'xm' would show the same state changes. The problem is that git commit 3d925320 ("xen/pcifront: Use Xen-SWIOTLB when initting if required") introduced a mechanism to initialize the SWIOTLB when the Xen PCI front moves to Connected state. It also had some aggressive seatbelt code check that would warn the user if one tried to change to Connected state without hitting first the Closing state: pcifront pci-0: PCI frontend already installed! However, that code can be relaxed and we can continue on working even if the frontend is instructed to be the 'Connected' state with no devices and then gets tickled to be in 'Connected' state again. In other words, this 4(Connected)->5(Closing)->4(Connected) state was expected, while 4(Connected)->.... anything but 5(Closing)->4(Connected) was not. This patch removes that aggressive check and allows Xen pcifront to work with the 'xl' toolstack (for one or more PCI devices) and with 'xm' toolstack (for more than two PCI devices). Acked-by:
Bjorn Helgaas <bhelgaas@google.com> Cc: linux-pci@vger.kernel.org [v2: Added in the description about two PCI devices] Signed-off-by:
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by:
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Laszlo Ersek authored
commit 0b0c002c upstream. ... because the "clock_event_device framework" already accounts for idle time through the "event_handler" function pointer in xen_timer_interrupt(). The patch is intended as the completion of [1]. It should fix the double idle times seen in PV guests' /proc/stat [2]. It should be orthogonal to stolen time accounting (the removed code seems to be isolated). The approach may be completely misguided. [1] https://lkml.org/lkml/2011/10/6/10 [2] http://lists.xensource.com/archives/html/xen-devel/2010-08/msg01068.html John took the time to retest this patch on top of v3.10 and reported: "idle time is correctly incremented for pv and hvm for the normal case, nohz=off and nohz=idle." so lets put this patch in. Signed-off-by:
Laszlo Ersek <lersek@redhat.com> Signed-off-by:
John Haxby <john.haxby@oracle.com> Signed-off-by:
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Zach Bobroff authored
commit d3768d88 upstream. ExitBootServices is absolutely supposed to return a failure if any ExitBootServices event handler changes the memory map. Basically the get_map loop should run again if ExitBootServices returns an error the first time. I would say it would be fair that if ExitBootServices gives an error the second time then Linux would be fine in returning control back to BIOS. The second change is the following line: again: size += sizeof(*mem_map) * 2; Originally you were incrementing it by the size of one memory map entry. The issue here is all related to the low_alloc routine you are using. In this routine you are making allocations to get the memory map itself. Doing this allocation or allocations can affect the memory map by more than one record. [ mfleming - changelog, code style ] Signed-off-by:
Zach Bobroff <zacharyb@ami.com> Signed-off-by:
Matt Fleming <matt.fleming@intel.com> Signed-off-by:
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Helge Deller authored
commit 92b59929 upstream. If the value which should be moved into a space register is zero, we can optimize the inline assembly to become "mtsp %r0,%srX". Signed-off-by:
Helge Deller <deller@gmx.de> Signed-off-by:
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Helge Deller authored
commit dac76f1b upstream. The LMMIO length reported by PAT and the length given by the LBA MASK register are not consistent. This leads e.g. to a not-working ATI FireGL card with the radeon DRM driver since the memory can't be mapped. Fix this by correctly adjusting the resource sizes. Signed-off-by:
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John David Anglin authored
commit e8d8fc21 upstream. I still see the occasional random segv on rp3440. Looking at one of these (a code 15), it appeared the problem must be with the cache handling of anonymous pages. Reviewing this, I noticed that the space register %sr1 might be being clobbered when we flush an anonymous page. Register %sr1 is used for TLB purges in a couple of places. These purges are needed on PA8800 and PA8900 processors to ensure cache consistency of flushed cache lines. The solution here is simply to move the %sr1 load into the TLB lock region needed to ensure that one purge executes at a time on SMP systems. This was already the case for one use. After a few days of operation, I haven't had a random segv on my rp3440. Signed-off-by:
John David Anglin <dave.anglin@bell.net> Signed-off-by:
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Christoph Lameter authored
commit 0f8f8094 upstream. Some architectures (e.g. powerpc built with CONFIG_PPC_256K_PAGES=y CONFIG_FORCE_MAX_ZONEORDER=11) get PAGE_SHIFT + MAX_ORDER > 26. In 3.10 kernels, CONFIG_LOCKDEP=y with PAGE_SHIFT + MAX_ORDER > 26 makes init_lock_keys() dereference beyond kmalloc_caches[26]. This leads to an unbootable system (kernel panic at initializing SLAB) if one of kmalloc_caches[26...PAGE_SHIFT+MAX_ORDER-1] is not NULL. Fix this by making sure that init_lock_keys() does not dereference beyond kmalloc_caches[26] arrays. Signed-off-by:
Christoph Lameter <cl@linux.com> Reported-by:
Tetsuo Handa <penguin-kernel@I-Love.SAKURA.ne.jp> Cc: Pekka Enberg <penberg@kernel.org> Signed-off-by:
Pekka Enberg <penberg@kernel.org> Signed-off-by:
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Helge Deller authored
commit 5b879d78 upstream. When running the LTP testsuite one may hit this kernel BUG() with the write06 testcase: kernel BUG at mm/filemap.c:2023! CPU: 1 PID: 8614 Comm: writev01 Not tainted 3.10.0-rc7-64bit-c3000+ #6 IASQ: 0000000000000000 0000000000000000 IAOQ: 00000000401e6e84 00000000401e6e88 IIR: 03ffe01f ISR: 0000000010340000 IOR: 000001fbe0380820 CPU: 1 CR30: 00000000bef80000 CR31: ffffffffffffffff ORIG_R28: 00000000bdc192c0 IAOQ[0]: iov_iter_advance+0x3c/0xc0 IAOQ[1]: iov_iter_advance+0x40/0xc0 RP(r2): generic_file_buffered_write+0x204/0x3f0 Backtrace: [<00000000401e764c>] generic_file_buffered_write+0x204/0x3f0 [<00000000401eab24>] __generic_file_aio_write+0x244/0x448 [<00000000401eadc0>] generic_file_aio_write+0x98/0x150 [<000000004024f460>] do_sync_readv_writev+0xc0/0x130 [<000000004025037c>] compat_do_readv_writev+0x12c/0x340 [<00000000402505f8>] compat_writev+0x68/0xa0 [<0000000040251d88>] compat_SyS_writev+0x98/0xf8 Reason for this crash is a gcc miscompilation in the fault handlers of pa_memcpy() which return the fault address instead of the copied bytes. Since this seems to be a generic problem with gcc-4.7.x (and below), it's better to simplify the fault handlers in pa_memcpy to avoid this problem. Here is a simple reproducer for the problem: int main(int argc, char **argv) { int fd, nbytes; struct iovec wr_iovec[] = { { "TEST STRING ",32}, { (char*)0x40005000,32} }; // random memory. fd = open(DATA_FILE, O_RDWR | O_CREAT, 0666); nbytes = writev(fd, wr_iovec, 2); printf("return value = %d, errno %d (%s)\n", nbytes, errno, strerror(errno)); return 0; } In addition, John David Anglin wrote: There is no gcc PR as pa_memcpy is not legitimate C code. There is an implicit assumption that certain variables will contain correct values when an exception occurs and the code randomly jumps to one of the exception blocks. There is no guarantee of this. If a PR was filed, it would likely be marked as invalid. Signed-off-by:
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Helge Deller authored
commit a83f58bc upstream. Signed-off-by:
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Tejun Heo authored
commit 14611e51 upstream. task->cgroups is a RCU pointer pointing to struct css_set. A task switches to a different css_set on cgroup migration but a css_set doesn't change once created and its pointers to cgroup_subsys_states aren't RCU protected. task_subsys_state[_check]() is the macro to acquire css given a task and subsys_id pair. It RCU-dereferences task->cgroups->subsys[] not task->cgroups, so the RCU pointer task->cgroups ends up being dereferenced without read_barrier_depends() after it. It's broken. Fix it by introducing task_css_set[_check]() which does RCU-dereference on task->cgroups. task_subsys_state[_check]() is reimplemented to directly dereference ->subsys[] of the css_set returned from task_css_set[_check](). This removes some of sparse RCU warnings in cgroup. v2: Fixed unbalanced parenthsis and there's no need to use rcu_dereference_raw() when !CONFIG_PROVE_RCU. Both spotted by Li. Signed-off-by:
Tejun Heo <tj@kernel.org> Reported-by:
Fengguang Wu <fengguang.wu@intel.com> Acked-by:
Li Zefan <lizefan@huawei.com> Signed-off-by:
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Li Zefan authored
commit 1c8158ee upstream. commit 5db9a4d9 Author: Tejun Heo <tj@kernel.org> Date: Sat Jul 7 16:08:18 2012 -0700 cgroup: fix cgroup hierarchy umount race This commit fixed a race caused by the dput() in css_dput_fn(), but the dput() in cgroup_event_remove() can also lead to the same BUG(). Signed-off-by:
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Joachim Eastwood authored
commit e39506b4 upstream. Commit 80af9e6d (pcmcia at91_cf: fix raw gpio number usage) forgot to change the parameter in gpio_get_value after adding gpio validation. Signed-off-by:
Joachim Eastwood <manabian@gmail.com> Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by:
Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by:
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Jason Wang authored
commit 35848f68 upstream. Even if guest were compiled without SMP support, it could not assume that host wasn't. So switch to use mb() instead of smp_mb() to force memory barriers for UP guest. Signed-off-by:
Jason Wang <jasowang@redhat.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by:
K. Y. Srinivasan <kys@microsoft.com> Signed-off-by:
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George Cherian authored
commit 5388a3a5 upstream. Do a release_mem_region of the hcd resource. Without this the subsequent insertion of module fails in request_mem_region. Signed-off-by:
George Cherian <george.cherian@ti.com> Acked-by:
Felipe Balbi <balbi@ti.com> Signed-off-by:
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Mathias Nyman authored
commit 025f880c upstream. Fail and free the container context in case dma_pool_alloc() can't allocate the raw context data part of it This patch should be backported to kernels as old as 2.6.31, that contain the commit d115b048 "USB: xhci: Support for 64-byte contexts". Signed-off-by:
Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by:
Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: John Youn <johnyoun@synopsys.com> Signed-off-by:
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Roger Quadros authored
commit 4e5c9e6f upstream. For PHY mode, the PHYs must be brought out of reset before the EHCI controller is started. This patch fixes the issue where USB devices are not found on Beagleboard/Beagle-xm if USB has been started previously by the bootloader. (e.g. by "usb start" command in u-boot) Tested on Beagleboard, Beagleboard-xm and Pandaboard. Issue present on 3.10 onwards. Reported-by:
Tomi Valkeinen <tomi.valkeinen@ti.com> Tested-by:
Roger Quadros <rogerq@ti.com> Signed-off-by:
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UCHINO Satoshi authored
commit d68c277b upstream. Without this memory barrier, the file-storage thread may fail to escape from the following while loop, because it may observe new common->thread_wakeup_needed and old bh->state which are updated by the callback functions. /* Wait for the CBW to arrive */ while (bh->state != BUF_STATE_FULL) { rc = sleep_thread(common); if (rc) return rc; } Signed-off-by:
UCHINO Satoshi <satoshi.uchino@toshiba.co.jp> Acked-by:
Michal Nazarewicz <mina86@mina86.com> Signed-off-by:
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Dan Williams authored
commit a254810a upstream. These devices are all Gobi1K devices (according to the Windows INF files) and should be handled by qcserial instead of option. Their network port is handled by qmi_wwan. Signed-off-by:
Dan Williams <dcbw@redhat.com> Signed-off-by:
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Darren Hart authored
commit 29692d05 upstream. Use DMI_BOARD_NAME to determine if we are running on a MinnowBoard and set the uart clock to 50MHz if so. This removes the need to pass the user_uartclk to the kernel at boot time. Signed-off-by:
Darren Hart <dvhart@linux.intel.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Peter Waskiewicz <peter.p.waskiewicz.jr@intel.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
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Theodore Ts'o authored
commit 42c832de upstream. The function ext4_write_inline_data_end() can return an error. So we need to assign it to a signed integer variable to check for an error return (since copied is an unsigned int). Signed-off-by:
"Theodore Ts'o" <tytso@mit.edu> Cc: Zheng Liu <wenqing.lz@taobao.com> Signed-off-by:
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Al Viro authored
commit 64cb9273 upstream. Both ext3 and ext4 htree_dirblock_to_tree() is just filling the in-core rbtree for use by call_filldir(). All updates of ->f_pos are done by the latter; bumping it here (on error) is obviously wrong - we might very well have it nowhere near the block we'd found an error in. Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Maarten ter Huurne authored
commit 6ca792ed upstream. Subtracting the number of the first data block places the superblock backups one block too early, corrupting the file system. When the block size is larger than 1K, the first data block is 0, so the subtraction has no effect and no corruption occurs. Signed-off-by:
Maarten ter Huurne <maarten@treewalker.org> Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
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Theodore Ts'o authored
commit 39c04153 upstream. Once we decrement transaction->t_updates, if this is the last handle holding the transaction from closing, and once we release the t_handle_lock spinlock, it's possible for the transaction to commit and be released. In practice with normal kernels, this probably won't happen, since the commit happens in a separate kernel thread and it's unlikely this could all happen within the space of a few CPU cycles. On the other hand, with a real-time kernel, this could potentially happen, so save the tid found in transaction->t_tid before we release t_handle_lock. It would require an insane configuration, such as one where the jbd2 thread was set to a very high real-time priority, perhaps because a high priority real-time thread is trying to read or write to a file system. But some people who use real-time kernels have been known to do insane things, including controlling laser-wielding industrial robots. :-) Signed-off-by:
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Theodore Ts'o authored
commit fe52d17c upstream. Some of the functions which modify the jbd2 superblock were not updating the checksum before calling jbd2_write_superblock(). Move the call to jbd2_superblock_csum_set() to jbd2_write_superblock(), so that the checksum is calculated consistently. Signed-off-by:
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Larry Finger authored
commit 10d0b903 upstream. A typo causes routine rtl92cu_phy_rf6052_set_cck_txpower() to test the same condition twice. The problem was found using cppcheck-1.49, and the proper fix was verified against the pre-mac80211 version of the code. This patch was originally included as commit 1288aa4e, but was accidentally reverted in a later patch. Reported-by: David Binderman <dcb314@hotmail.com> [original report] Reported-by: Andrea Morello <andrea.merello@gmail.com> [report of accidental reversion] Signed-off-by:
Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by:
John W. Linville <linville@tuxdriver.com> Signed-off-by:
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Larry Finger authored
commit 73e088ed upstream. The driver loads its firmware from files rtlwifi/rtl8723fw*.bin, but the MODULE_FIRMWARE macros refer to rtlwifi/RTL8723aefw*.bin. Signed-off-by:
Axel Köllhofer <AxelKoellhofer@web.de> Signed-off-by:
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Larry Finger authored
commit c4d827c5 upstream. This is a new device for this driver. Reported-by:
Tobias Kluge <zielscheibe@gmail.com> Signed-off-by:
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Pavel Shilovsky authored
commit 689c3db4 upstream. If we request reading or writing on a file that needs to be reopened, it causes the deadlock: we are already holding rw semaphore for reading and then we try to acquire it for writing in cifs_relock_file. Fix this by acquiring the semaphore for reading in cifs_relock_file due to we don't make any changes in locks and don't need a write access. Signed-off-by:
Pavel Shilovsky <pshilovsky@samba.org> Acked-by:
Jeff Layton <jlayton@redhat.com> Signed-off-by:
Steve French <smfrench@gmail.com> Signed-off-by:
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Steve French authored
commit 6658b9f7 upstream. Certain servers may not set the NumberOfLinks field in query file/path info responses. In such a case, cifs_inode_needs_reval() assumes that all regular files are hardlinks and triggers revalidation, leading to excessive and unnecessary network traffic. This change hardcodes cf_nlink (and subsequently i_nlink) when not returned by the server, similar to what already occurs in cifs_mkdir(). Signed-off-by:
David Disseldorp <ddiss@suse.de> Signed-off-by:
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- 13 Jul, 2013 3 commits
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Greg Kroah-Hartman authored
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Michal Hocko authored
commit fa460c2d upstream. This reverts commit e4715f01. mem_cgroup_put is hierarchy aware so mem_cgroup_put(memcg) already drops an additional reference from all parents so the additional mem_cgrroup_put(parent) potentially causes use-after-free. Signed-off-by:
Michal Hocko <mhocko@suse.cz> Signed-off-by:
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Hugh Dickins <hughd@google.com> Cc: Tejun Heo <tj@kernel.org> Cc: Glauber Costa <glommer@openvz.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by:
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Srivatsa S. Bhat authored
commit f51e1eb6 upstream. Toralf Förster reported that the cpufreq ondemand governor behaves erratically (doesn't scale well) after a suspend/resume cycle. The problem was that the cpufreq subsystem's idea of the cpu frequencies differed from the actual frequencies set in the hardware after a suspend/resume cycle. Toralf bisected the problem to commit a66b2e5 (cpufreq: Preserve sysfs files across suspend/resume). Among other (harmless) things, that commit skipped the call to cpufreq_update_policy() in the resume path. But cpufreq_update_policy() plays an important role during resume, because it is responsible for checking if the BIOS changed the cpu frequencies behind our back and resynchronize the cpufreq subsystem's knowledge of the cpu frequencies, and update them accordingly. So, restore the call to cpufreq_update_policy() in the resume path to fix the cpufreq regression. Reported-and-tested-by:
Toralf Förster <toralf.foerster@gmx.de> Signed-off-by:
Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by:
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