- 12 Oct, 2016 2 commits
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Oleksij Rempel authored
... and Epson RX8900 real time clock Signed-off-by:
Oleksij Rempel <fixed-term.Oleksij.Rempel@de.bosch.com> Acked-by:
Rob Herring <robh@kernel.org> Signed-off-by:
Alexandre Belloni <alexandre.belloni@free-electrons.com>
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Oleksij Rempel authored
Add Micro Crystal AG vendor id Signed-off-by:
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- 22 Sep, 2016 1 commit
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Arnd Bergmann authored
A bug fix for the ACPI side of this driver caused a harmless build warning: drivers/rtc/rtc-cmos.c:1115:13: error: 'cmos_check_acpi_rtc_status' defined but not used [-Werror=unused-function] static void cmos_check_acpi_rtc_status(struct device *dev, We can avoid the warning and simplify the driver at the same time by removing the #ifdef for CONFIG_PM and rely on the SIMPLE_DEV_PM_OPS() to set everything up correctly. cmos_resume() has to get marked as __maybe_unused so we don't introduce another warning, and the two variants of cmos_poweroff() can get merged into one using an IS_ENABLED() check. Fixes: 983bf125 ("rtc: cmos: Clear ACPI-driven alarms upon resume") Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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- 21 Sep, 2016 5 commits
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Axel Lin authored
devm_kzalloc can return NULL, add NULL checking to prevent NULL pointer dereference. Signed-off-by:
Axel Lin <axel.lin@ingics.com> Signed-off-by:
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Raghavendra Ganiga authored
This patch changes calls of spi read write calls to register map read and write calls in rtc ds1347 Signed-off-by:
Raghavendra Chandra Ganiga <ravi23ganiga@gmail.com> Signed-off-by:
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Gabriele Mazzotta authored
Some platform firmware may interfere with the RTC alarm over suspend, resulting in the kernel and hardware having different ideas about system state but also potentially causing problems with firmware that assumes the OS will clean this case up. This patch restores the RTC alarm on resume to ensure that kernel and hardware are in sync. The case we've seen is Intel Rapid Start, which is a firmware-mediated feature that automatically transitions systems from suspend-to-RAM to suspend-to-disk without OS involvement. It does this by setting the RTC alarm and a flag that indicates that on wake it should perform the transition rather than re-starting the OS. However, if the OS has set a wakeup alarm that would wake the machine earlier, it refuses to overwrite it and allows the system to wake instead. This fails in the following situation: 1) User configures Intel Rapid Start to transition after (say) 15 minutes 2) User suspends to RAM. Firmware sets the wakeup alarm for 15 minutes in the future 3) User resumes after 5 minutes. Firmware does not reset the alarm, and as such it is still set for 10 minutes in the future 4) User suspends after 5 minutes. Firmware notices that the alarm is set for 5 minutes in the future, which is less than the 15 minute transition threshold. It therefore assumes that the user wants the machine to wake in 5 minutes 5) System resumes after 5 minutes The worst case scenario here is that the user may have put the system in a bag between (4) and (5), resulting in it running in a confined space and potentially overheating. This seems reasonably important. The Rapid Start support code got added in 3.11, but it can be configured in the firmware regardless of kernel support. Signed-off-by:
Gabriele Mazzotta <gabriele.mzt@gmail.com> Signed-off-by:
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Gabriele Mazzotta authored
Currently ACPI-driven alarms are not cleared when they wake the system. As consequence, expired alarms must be manually cleared to program a new alarm. Fix this by correctly handling ACPI-driven alarms. More specifically, the ACPI specification [1] provides for two alternative implementations of the RTC. Depending on the implementation, the driver either clear the alarm from the resume callback or from ACPI interrupt handler: - The platform has the RTC wakeup status fixed in hardware (ACPI_FADT_FIXED_RTC is 0). In this case the driver can determine if the RTC was the reason of the wakeup from the resume callback by reading the RTC status register. - The platform has no fixed hardware feature event bits. In this case a GPE is used to wake the system and the driver clears the alarm from its handler. [1] http://www.acpi.info/DOWNLOADS/ACPI_5_Errata%20A.pdfSigned-off-by:
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Marcin Niestroj authored
Support configuration of ext_wakeup sources. This patch makes it possible to enable ext_wakeup and set it's polarity, depending on board configuration. AM335x's dedicated PMIC (tps65217) uses ext_wakeup to notify about power-button presses. Handling power-button presses enables to recover from RTC-only power states correctly. Signed-off-by:
Marcin Niestroj <m.niestroj@grinn-global.com> Acked-by:
Tony Lindgren <tony@atomide.com> Acked-by:
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- 19 Sep, 2016 1 commit
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Pratyush Anand authored
We have observed on few x86 machines with rtc-cmos device that hpet_rtc_interrupt() is called just after irq registration and before cmos_do_probe() could call hpet_rtc_timer_init(). So, neither hpet_default_delta nor hpet_t1_cmp is initialized by the time interrupt is raised in the given situation, and this results in NMI watchdog LOCKUP. It has only been observed sporadically on kdump secondary kernels. See the call trace: ---<-snip->--- [ 27.913194] Kernel panic - not syncing: Watchdog detected hard LOCKUP on cpu 0 [ 27.915371] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.10.0-342.el7.x86_64 #1 [ 27.917503] Hardware name: HP ProLiant DL160 Gen8, BIOS J03 02/10/2014 [ 27.919455] ffffffff8186a728 0000000059c82488 ffff880034e05af0 ffffffff81637bd4 [ 27.921870] ffff880034e05b70 ffffffff8163144a 0000000000000010 ffff880034e05b80 [ 27.924257] ffff880034e05b20 0000000059c82488 0000000000000000 0000000000000000 [ 27.926599] Call Trace: [ 27.927352] <NMI> [<ffffffff81637bd4>] dump_stack+0x19/0x1b [ 27.929080] [<ffffffff8163144a>] panic+0xd8/0x1e7 [ 27.930588] [<ffffffff8111d3e0>] ? restart_watchdog_hrtimer+0x50/0x50 [ 27.932502] [<ffffffff8111d4a2>] watchdog_overflow_callback+0xc2/0xd0 [ 27.934427] [<ffffffff811612c1>] __perf_event_overflow+0xa1/0x250 [ 27.936232] [<ffffffff81161d94>] perf_event_overflow+0x14/0x20 [ 27.937957] [<ffffffff81032ae8>] intel_pmu_handle_irq+0x1e8/0x470 [ 27.939799] [<ffffffff8164164b>] perf_event_nmi_handler+0x2b/0x50 [ 27.941649] [<ffffffff81640d99>] nmi_handle.isra.0+0x69/0xb0 [ 27.943348] [<ffffffff81640f49>] do_nmi+0x169/0x340 [ 27.944802] [<ffffffff816401d3>] end_repeat_nmi+0x1e/0x2e [ 27.946424] [<ffffffff81056ee5>] ? hpet_rtc_interrupt+0x85/0x380 [ 27.948197] [<ffffffff81056ee5>] ? hpet_rtc_interrupt+0x85/0x380 [ 27.949992] [<ffffffff81056ee5>] ? hpet_rtc_interrupt+0x85/0x380 [ 27.951816] <<EOE>> <IRQ> [<ffffffff8108f5a3>] ? run_timer_softirq+0x43/0x340 [ 27.954114] [<ffffffff8111e24e>] handle_irq_event_percpu+0x3e/0x1e0 [ 27.955962] [<ffffffff8111e42d>] handle_irq_event+0x3d/0x60 [ 27.957635] [<ffffffff811210c7>] handle_edge_irq+0x77/0x130 [ 27.959332] [<ffffffff8101704f>] handle_irq+0xbf/0x150 [ 27.960949] [<ffffffff8164a86f>] do_IRQ+0x4f/0xf0 [ 27.962434] [<ffffffff8163faed>] common_interrupt+0x6d/0x6d [ 27.964101] <EOI> [<ffffffff8163f43b>] ? _raw_spin_unlock_irqrestore+0x1b/0x40 [ 27.966308] [<fffff8111ff07>] __setup_irq+0x2a7/0x570 [ 28.067859] [<ffffffff81056e60>] ? hpet_cpuhp_notify+0x140/0x140 [ 28.069709] [<ffffffff8112032c>] request_threaded_irq+0xcc/0x170 [ 28.071585] [<ffffffff814b24a6>] cmos_do_probe+0x1e6/0x450 [ 28.073240] [<ffffffff814b2710>] ? cmos_do_probe+0x450/0x450 [ 28.074911] [<ffffffff814b27cb>] cmos_pnp_probe+0xbb/0xc0 [ 28.076533] [<ffffffff8139b245>] pnp_device_probe+0x65/0xd0 [ 28.078198] [<ffffffff813f8ca7>] driver_probe_device+0x87/0x390 [ 28.079971] [<ffffffff813f9083>] __driver_attach+0x93/0xa0 [ 28.081660] [<ffffffff813f8ff0>] ? __device_attach+0x40/0x40 [ 28.083662] [<ffffffff813f6a13>] bus_for_each_dev+0x73/0xc0 [ 28.085370] [<ffffffff813f86fe>] driver_attach+0x1e/0x20 [ 28.086974] [<ffffffff813f8250>] bus_add_driver+0x200/0x2d0 [ 28.088634] [<ffffffff81ade49a>] ? rtc_sysfs_init+0xe/0xe [ 28.090349] [<ffffffff813f9704>] driver_register+0x64/0xf0 [ 28.091989] [<ffffffff8139b070>] pnp_register_driver+0x20/0x30 [ 28.093707] [<ffffffff81ade4ab>] cmos_init+0x11/0x71 ---<-snip->--- This patch moves hpet_rtc_timer_init() before IRQ registration, so that we can gracefully handle such spurious interrupts. It also masks HPET RTC interrupts, in case IRQ registration fails. We were able to reproduce the problem in maximum 15 trials of kdump secondary kernel boot on an hp-dl160gen8 FCoE host machine without this patch. However, more than 35 trials went fine after applying this patch. Suggested-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
Pratyush Anand <panand@redhat.com> Acked-by:
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- 05 Sep, 2016 2 commits
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Alexandre Belloni authored
The rtc-asm9260 driver uses a discrete spinlock (wrongly uninitialized). Use the rtc mutex to lock mmio accesses instead. Signed-off-by: -
Alexandre Belloni authored
The rtc-asm9260 driver compiles correctly on other architectures, add COMPILE_TEST to improve code coverage. Signed-off-by:
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- 01 Sep, 2016 1 commit
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Julia Lawall authored
Check for rtc_class_ops structures that are only passed to devm_rtc_device_register, rtc_device_register, platform_device_register_data, all of which declare the corresponding parameter as const. Declare rtc_class_ops structures that have these properties as const. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r disable optional_qualifier@ identifier i; position p; @@ static struct rtc_class_ops i@p = { ... }; @ok@ identifier r.i; expression e1,e2,e3,e4; position p; @@ ( devm_rtc_device_register(e1,e2,&i@p,e3) | rtc_device_register(e1,e2,&i@p,e3) | platform_device_register_data(e1,e2,e3,&i@p,e4) ) @bad@ position p != {r.p,ok.p}; identifier r.i; @@ i@p @depends on !bad disable optional_qualifier@ identifier r.i; @@ static +const struct rtc_class_ops i = { ... }; // </smpl> Signed-off-by:
Julia Lawall <Julia.Lawall@lip6.fr> Acked-by:
Baruch Siach <baruch@tkos.co.il> Acked-by:
Hans Ulli Kroll <ulli.kroll@googlemail.com> Acked-by:
Linus Walleij <linus.walleij@linaro.org> Acked-by:
Thierry Reding <treding@nvidia.com> Signed-off-by:
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- 31 Aug, 2016 12 commits
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Chen-Yu Tsai authored
The ac100 device tree binding specifies the usage of clock-output-names to specify the names of its 3 clock outputs. This is needed for orphan clock resolution, when the ac100 is probed much later than any clocks that consume any of its outputs. This wasn't supported by the driver. Add support for this. Signed-off-by:
Chen-Yu Tsai <wens@csie.org> Signed-off-by:
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Alexandre Belloni authored
.owner is already set by the spi core. Signed-off-by: -
Markus Elfring authored
The field "owner" is set by core. Thus delete an extra initialisation. Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci Signed-off-by:
Markus Elfring <elfring@users.sourceforge.net> Signed-off-by:
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Jan Östlund authored
While the oscillator failure flag is set, the RTC registers should be considered invalid. bq32k_rtc_read_time() now returns an error instead of an invalid time. The failure flag is cleared the next time the clock is set. Signed-off-by:
Jan Östlund <jao@hms.se> Signed-off-by:
Daniel Romell <daro@hms.se> Signed-off-by:
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Jan Östlund authored
The BQ32K_SECONDS_MASK and BQ32K_MINUTES_MASK both has the same value. This is no functional change. Signed-off-by:
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LABBE Corentin authored
The char pointer buf_ptr is assigned an address from a const char pointer buf (parameter of wakealarm_store). The data pointer by buf_ptr is never modified. So casting it to a (char *) is useless. This patch remove this cast, and transform buf_ptr to a const char pointer. Signed-off-by:
LABBE Corentin <clabbe.montjoie@gmail.com> Signed-off-by:
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Alexandre Belloni authored
The ISL12057 has a documentation file, remove it from trivial-devices.txt Signed-off-by: -
Alexandre Belloni authored
The Intersil isl12057 is now supported by the ds1307 driver. Acked-by:
Arnaud Ebalard <arno@natisbad.org> Signed-off-by:
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Alexandre Belloni authored
Intersil ISL12057 is a drop-in replacement for DS1337. It can be supported by the ds1307 driver. Acked-by:
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Alexandre Belloni authored
Add an option to properly support the century bit of ds1337 and compatibles and ds1340. Because the driver had a bug until now, it is not possible to switch users to the fixed code directly as RTCs in the field will wrongly have the century bit set. Acked-by:
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Fabio Estevam authored
The number after the '@' symbol should be the SPI chip select number associated with the ds1390 and it should match the 'reg' field. So change it the address to zero, to make it consistent. Signed-off-by:
Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by:
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Christophe JAILLET authored
It is likely that checking the result of 'pcf2123_write_reg' is expected here. Also fix a small style issue. The '{' at the beginning of the function is misplaced. Fixes: 809b453b ("rtc: pcf2123: clean up writes to the rtc chip") Signed-off-by:Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by:
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- 08 Aug, 2016 5 commits
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Chen-Yu Tsai authored
The AC100's RTC side has 3 clock outputs on external pins, which can provide a clock signal to the SoC or other modules, such as WiFi or GSM modules. Support this with a custom clk driver integrated with the rtc driver. Signed-off-by:
Lee Jones <lee.jones@linaro.org>
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Chen-Yu Tsai authored
X-Powers AC100 is a codec / RTC combo chip. This driver supports the RTC sub-device. The RTC block also has clock outputs and non-volatile storage. Non-volatile storage wthin the RTC hardware is not supported. Clock output support is added in the next patch. Signed-off-by:
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Chen-Yu Tsai authored
The AC100 is a multifunction device with an audio codec subsystem and an RTC subsystem. These two subsystems share a common register space and host interface. Signed-off-by:
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Chen-Yu Tsai authored
The AC100 is a multifunction device with an audio codec subsystem and an RTC subsystem. These two subsystems share a common register space and host interface. Signed-off-by:
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Linus Torvalds authored
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- 07 Aug, 2016 10 commits
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull more block fixes from Jens Axboe: "As mentioned in the pull the other day, a few more fixes for this round, all related to the bio op changes in this series. Two fixes, and then a cleanup, renaming bio->bi_rw to bio->bi_opf. I wanted to do that change right after or right before -rc1, so that risk of conflict was reduced. I just rebased the series on top of current master, and no new ->bi_rw usage has snuck in" * 'for-linus' of git://git.kernel.dk/linux-block: block: rename bio bi_rw to bi_opf target: iblock_execute_sync_cache() should use bio_set_op_attrs() mm: make __swap_writepage() use bio_set_op_attrs() block/mm: make bdev_ops->rw_page() take a bool for read/write
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git://people.freedesktop.org/~airlied/linuxLinus Torvalds authored
Pull drm zpos property support from Dave Airlie: "This tree was waiting on some media stuff I hadn't had time to get a stable branchpoint off, so I just waited until it was all in your tree first. It's been around a bit on the list and shouldn't affect anything outside adding the generic API and moving some ARM drivers to using it" * tag 'drm-for-v4.8-zpos' of git://people.freedesktop.org/~airlied/linux: drm: rcar: use generic code for managing zpos plane property drm/exynos: use generic code for managing zpos plane property drm: sti: use generic zpos for plane drm: add generic zpos property
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Jens Axboe authored
Since commit 63a4cc24, bio->bi_rw contains flags in the lower portion and the op code in the higher portions. This means that old code that relies on manually setting bi_rw is most likely going to be broken. Instead of letting that brokeness linger, rename the member, to force old and out-of-tree code to break at compile time instead of at runtime. No intended functional changes in this commit. Signed-off-by:
Jens Axboe <axboe@fb.com>
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Jens Axboe authored
The original commit missed this function, it needs to mark it a write flush. Cc: Mike Christie <mchristi@redhat.com> Fixes: e742fc32 ("target: use bio op accessors") Signed-off-by:
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Jens Axboe authored
Cleaner than manipulating bio->bi_rw flags directly. Signed-off-by: -
Jens Axboe authored
Commit abf54548 changed it from an 'rw' flags type to the newer ops based interface, but now we're effectively leaking some bdev internals to the rest of the kernel. Since we only care about whether it's a read or a write at that level, just pass in a bool 'is_write' parameter instead. Then we can also move op_is_write() and friends back under CONFIG_BLOCK protection. Reviewed-by:
Mike Christie <mchristi@redhat.com> Signed-off-by:
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git://git.lwn.net/linuxLinus Torvalds authored
Pull documentation fixes from Jonathan Corbet: "Three fixes for the docs build, including removing an annoying warning on 'make help' if sphinx isn't present" * tag 'doc-4.8-fixes' of git://git.lwn.net/linux: DocBook: use DOCBOOKS="" to ignore DocBooks instead of IGNORE_DOCBOOKS=1 Documenation: update cgroup's document path Documentation/sphinx: do not warn about missing tools in 'make help'
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/binfmt_miscLinus Torvalds authored
Pull binfmt_misc update from James Bottomley: "This update is to allow architecture emulation containers to function such that the emulation binary can be housed outside the container itself. The container and fs parts both have acks from relevant experts. To use the new feature you have to add an F option to your binfmt_misc configuration" From the docs: "The usual behaviour of binfmt_misc is to spawn the binary lazily when the misc format file is invoked. However, this doesn't work very well in the face of mount namespaces and changeroots, so the F mode opens the binary as soon as the emulation is installed and uses the opened image to spawn the emulator, meaning it is always available once installed, regardless of how the environment changes" * tag 'binfmt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/binfmt_misc: binfmt_misc: add F option description to documentation binfmt_misc: add persistent opened binary handler for containers fs: add filp_clone_open API
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Eryu Guan authored
In most cases, EPERM is returned on immutable inode, and there're only a few places returning EACCES. I noticed this when running LTP on overlayfs, setxattr03 failed due to unexpected EACCES on immutable inode. So converting all EACCES to EPERM on immutable inode. Acked-by:
Dave Chinner <dchinner@redhat.com> Signed-off-by:
Eryu Guan <guaneryu@gmail.com> Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds authored
Pull more vfs updates from Al Viro: "Assorted cleanups and fixes. In the "trivial API change" department - ->d_compare() losing 'parent' argument" * 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: cachefiles: Fix race between inactivating and culling a cache object 9p: use clone_fid() 9p: fix braino introduced in "9p: new helper - v9fs_parent_fid()" vfs: make dentry_needs_remove_privs() internal vfs: remove file_needs_remove_privs() vfs: fix deadlock in file_remove_privs() on overlayfs get rid of 'parent' argument of ->d_compare() cifs, msdos, vfat, hfs+: don't bother with parent in ->d_compare() affs ->d_compare(): don't bother with ->d_inode fold _d_rehash() and __d_rehash() together fold dentry_rcuwalk_invalidate() into its only remaining caller
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- 06 Aug, 2016 1 commit
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Linus Torvalds authored
Merge tag 'xfs-rmap-for-linus-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs Pull more xfs updates from Dave Chinner: "This is the second part of the XFS updates for this merge cycle, and contains the new reverse block mapping feature for XFS. Reverse mapping allows us to track the owner of a specific block on disk precisely. It is implemented as a set of btrees (one per allocation group) that track the owners of allocated extents. Effectively it is a "used space tree" that is updated when we allocate or free extents. i.e. it is coherent with the free space btrees we already maintain and never overlaps with them. This reverse mapping infrastructure is the building block of several upcoming features - reflink, copy-on-write data, dedupe, online metadata and data scrubbing, highly accurate bad sector/data loss reporting to users, and significantly improved reconstruction of damaged and corrupted filesystems. There's a lot of new stuff coming along in the next couple of cycles,a nd it all builds in the rmap infrastructure. As such, it's a huge chunk of new code with new on-disk format features and internal infrastructure. It warns at mount time as an experimental feature and that it may eat data (as we do with all new on-disk features until they stabilise). We have not released userspace suport for it yet - userspace support currently requires download from Darrick's xfsprogs repo and build from source, so the access to this feature is really developer/tester only at this point. Initial userspace support will be released at the same time kernel with this code in it is released. The new rmap enabled code regresses 3 xfstests - all are ENOSPC related corner cases, one of which Darrick posted a fix for a few hours ago. The other two are fixed by infrastructure that is part of the upcoming reflink patchset. This new ENOSPC infrastructure requires a on-disk format tweak required to keep mount times in check - we need to keep an on-disk count of allocated rmapbt blocks so we don't have to scan the entire btrees at mount time to count them. This is currently being tested and will be part of the fixes sent in the next week or two so users will not be exposed to this change" * tag 'xfs-rmap-for-linus-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs: (52 commits) xfs: move (and rename) the deferred bmap-free tracepoints xfs: collapse single use static functions xfs: remove unnecessary parentheses from log redo item recovery functions xfs: remove the extents array from the rmap update done log item xfs: in btree_lshift, only allocate temporary cursor when needed xfs: remove unnecesary lshift/rshift key initialization xfs: remove the get*keys and update_keys btree ops pointers xfs: enable the rmap btree functionality xfs: don't update rmapbt when fixing agfl xfs: disable XFS_IOC_SWAPEXT when rmap btree is enabled xfs: add rmap btree block detection to log recovery xfs: add rmap btree geometry feature flag xfs: propagate bmap updates to rmapbt xfs: enable the xfs_defer mechanism to process rmaps to update xfs: log rmap intent items xfs: create rmap update intent log items xfs: add rmap btree insert and delete helpers xfs: convert unwritten status of reverse mappings xfs: remove an extent from the rmap btree xfs: add an extent to the rmap btree ...
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