- May 30, 2012
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Viresh Kumar authored
This patch converts existing sp805 watchdog driver to use already in place common infrastructure present in watchdog core. With this lot of code goes away. Signed-off-by:
Viresh Kumar <viresh.kumar@st.com> Signed-off-by:
Wim Van Sebroeck <wim@iguana.be>
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Hans de Goede authored
Since the watchdog code in sch56xx-common now uses the watchdog core, the Kconfig entires for the sch5627 and sch5636 should depend on WATCHDOG being set. Also select the watchdog core when we select one of the drivers. Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
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Dan Carpenter authored
WDOG_NO_WAY_OUT (3) and WDOG_ACTIVE (0) are the bit numbers, not a mask. So "data->wddev.status |= WDOG_ACTIVE;" was intended to set bit zero but it is a no-op. Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Acked-by:
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Ashish Jangam authored
This driver adds support for the watchdog functionality provided by the Dialog Semiconductor DA9052 PMIC chip. Tested on samsung smdkv6410 and i.mx53 QS boards. Signed-off-by:
Anthony Olech <Anthony.Olech@diasemi.com> Signed-off-by:
Ashish Jangam <ashish.jangam@kpitcummins.com> Signed-off-by:
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Hans de Goede authored
This fixes referencing free-ed memory in the corner case where /dev/watchdog is open when the platform driver gets unbound from the platform device. Signed-off-by:
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Hans de Goede authored
Since the watchdog core keeps track of the watchdog's active state, start/stop will never get called when no changes are necessary. So we can remove the check for the output_enable register changing before writing it (which is an expensive operation). Signed-off-by:
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Hans de Goede authored
Convert sch56xx drivers to the generic watchdog core. Note this patch depends on the "watchdog: Add multiple device support" patch from Alan Cox. Signed-off-by:
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Hans de Goede authored
If a driver's watchdog_device struct is part of a dynamically allocated struct (which it often will be), merely locking the module is not enough, even with a drivers module locked, the driver can be unbound from the device, examples: 1) The root user can unbind it through sysfd 2) The i2c bus master driver being unloaded for an i2c watchdog I will gladly admit that these are corner cases, but we still need to handle them correctly. The fix for this consists of 2 parts: 1) Add ref / unref operations, so that the driver can refcount the struct holding the watchdog_device struct and delay freeing it until any open filehandles referring to it are closed 2) Most driver operations will do IO on the device and the driver should not do any IO on the device after it has been unbound. Rather then letting each driver deal with this internally, it is better to ensure at the watchdog core level that no operations (other then unref...
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Hans de Goede authored
This patch fixes some potential multithreading issues, despite only allowing one process to open the /dev/watchdog device, we can still get called multiple times at the same time, since a program could be using thread, or could share the fd after a fork. This causes 2 potential problems: 1) watchdog_start / open do an unlocked test_n_set / test_n_clear, if these 2 race, the watchdog could be stopped while the active bit indicates it is running or visa versa. 2) Most watchdog_dev drivers probably assume that only one watchdog-op will get called at a time, this is not necessary true atm. Signed-off-by:
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Hans de Goede authored
Rewrite and extend the wrapper code so that we can easily introduce locking (this to be able to prevent potential multithreading issues). Signed-off-by:
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Alan Cox authored
While they are registered all our watchdogs now have a valid device object so we can in turn use that to report problems nicely. Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
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Alan Cox authored
Create the watchdog class and it's associated devices. Signed-off-by:
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Alan Cox authored
Some watchdogs merely trigger external alarms and controls. In a managed environment this is very useful but we want drivers to be able to figure out which is which now multiple dogs can be loaded. Thus add an ALARMONLY feature flag. Signed-off-by:
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Alan Cox authored
We keep the old /dev/watchdog interface file for the first watchdog via miscdev. This is basically a cut and paste of the relevant interface code from the rtc driver layer tweaked for watchdog. Revised to fix problems noted by Hans de Goede Signed-off-by:
Tomas Winkler <tomas.winkler@intel.com> Signed-off-by:
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Wim Van Sebroeck authored
Make the functions in watchdog_core.h extern like it should. Signed-off-by: -
Wim Van Sebroeck authored
The watchdog_core include file should have been named watchdog_core.h and not watchdog_dev.h . Correct this. Signed-off-by: -
Viresh Kumar authored
Some watchdog may need to check if watchdog is ACTIVE or not, for example in their suspend/resume hooks. This patch adds this routine and changes the core drivers to use it. Signed-off-by:
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H Hartley Sweeten authored
Include the private watchdog_dev.h header to pickup the prototypes for the watchdog_dev_register/unregister functions. This quiets the following sparse warnings: warning: symbol 'watchdog_dev_register' was not declared. Should it be static? warning: symbol 'watchdog_dev_unregister' was not declared. Should it be static? Signed-off-by:
H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 trampoline rework from H. Peter Anvin: "This code reworks all the "trampoline"/"realmode" code (various bits that need to live in the first megabyte of memory, most but not all of which runs in real mode at some point) in the kernel into a single object. The main reason for doing this is that it eliminates the last place in the kernel where we needed pages to be mapped RWX. This code separates all that code into proper R/RW/RX pages." Fix up conflicts in arch/x86/kernel/Makefile (mca removed next to reboot code), and arch/x86/kernel/reboot.c (reboot code moved around in one branch, modified in this one), and arch/x86/tools/relocs.c (mostly same code came in earlier due to working around the ld bugs just before the 3.4 release). Also remove stale x86-relocs entry from scripts/.gitignore as per Peter Anvin. * commit '61f54461': (36 commits) x86, realmode: Move end signature into header.S x86, relocs: When printing an error, say relative or absolute x86, relocs: More relocations which may end up as absolute x86, relocs: Workaround for binutils 2.22.52.0.1 section bug xen-acpi-processor: Add missing #include <xen/xen.h> acpi, bgrd: Add missing <linux/io.h> to drivers/acpi/bgrt.c x86, realmode: Change EFER to a single u64 field x86, realmode: Move kernel/realmode.c to realmode/init.c x86, realmode: Move not-common bits out of trampoline_common.S x86, realmode: Mask out EFER.LMA when saving trampoline EFER x86, realmode: Fix no cache bits test in reboot_32.S x86, realmode: Make sure all generated files are listed in targets x86, realmode: build fix: remove duplicate build x86, realmode: read cr4 and EFER from kernel for 64-bit trampoline x86, realmode: fixes compilation issue in tboot.c x86, realmode: move relocs from scripts/ to arch/x86/tools x86, realmode: header for trampoline code x86, realmode: flattened rm hierachy x86, realmode: don't copy real_mode_header x86, realmode: fix 64-bit wakeup sequence ...
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edacLinus Torvalds authored
Pull EDAC internal API changes from Mauro Carvalho Chehab: "This changeset is the first part of a series of patches that fixes the EDAC sybsystem. On this set, it changes the Kernel EDAC API in order to properly represent the Intel i3/i5/i7, Xeon 3xxx/5xxx/7xxx, and Intel E5-xxxx memory controllers. The EDAC core used to assume that: - the DRAM chip select pin is directly accessed by the memory controller - when multiple channels are used, they're all filled with the same type of memory. None of the above premises is true on Intel memory controllers since 2002, when RAMBUS and FB-DIMMs were introduced, and Advanced Memory Buffer or by some similar technologies hides the direct access to the DRAM pins. So, the existing drivers for those chipsets had to lie to the EDAC core, in general telling that just one channel is filled. That produces some hard to understand error messages like: EDAC MC0: CE row 3, channel 0, label "DIMM1": 1 Unknown error(s): memory read error on FATAL area : cpu=0 Err=0008:00c2 (ch=2), addr = 0xad1f73480 => socket=0, Channel=0(mask=2), rank=1 The location information there (row3 channel 0) is completely bogus: it has no physical meaning, and are just some random values that the driver uses to talk with the EDAC core. The error actually happened at CPU socket 0, channel 0, slot 1, but this is not reported anywhere, as the EDAC core doesn't know anything about the memory layout. So, only advanced users that know how the EDAC driver works and that tests their systems to see how DIMMs are mapped can actually benefit for such error logs. This patch series fixes the error report logic, in order to allow the EDAC to expose the memory architecture used by them to the EDAC core. So, as the EDAC core now understands how the memory is organized, it can provide an useful report: EDAC MC0: CE memory read error on DIMM1 (channel:0 slot:1 page:0x364b1b offset:0x600 grain:32 syndrome:0x0 - count:1 area:DRAM err_code:0001:0090 socket:0 channel_mask:1 rank:4) The location of the DIMM where the error happened is reported by "MC0" (cpu socket #0), at "channel:0 slot:1" location, and matches the physical location of the DIMM. There are two remaining issues not covered by this patch series: - The EDAC sysfs API will still report bogus values. So, userspace tools like edac-utils will still use the bogus data; - Add a new tracepoint-based way to get the binary information about the errors. Those are on a second series of patches (also at -next), but will probably miss the train for 3.5, due to the slow review process." Fix up trivial conflict (due to spelling correction of removed code) in drivers/edac/edac_device.c * git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac: (42 commits) i7core: fix ranks information at the per-channel struct i5000: Fix the fatal error handling i5100_edac: Fix a warning when compiled with 32 bits i82975x_edac: Test nr_pages earlier to save a few CPU cycles e752x_edac: provide more info about how DIMMS/ranks are mapped i5000_edac: Fix the logic that retrieves memory information i5400_edac: improve debug messages to better represent the filled memory edac: Cleanup the logs for i7core and sb edac drivers edac: Initialize the dimm label with the known information edac: Remove the legacy EDAC ABI x38_edac: convert driver to use the new edac ABI tile_edac: convert driver to use the new edac ABI sb_edac: convert driver to use the new edac ABI r82600_edac: convert driver to use the new edac ABI ppc4xx_edac: convert driver to use the new edac ABI pasemi_edac: convert driver to use the new edac ABI mv64x60_edac: convert driver to use the new edac ABI mpc85xx_edac: convert driver to use the new edac ABI i82975x_edac: convert driver to use the new edac ABI i82875p_edac: convert driver to use the new edac ABI ... -
git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds authored
Pull MIPS updates from Ralf Baechle: "The whole series has been sitting in -next for quite a while with no complaints. The last change to the series was before the weekend the removal of an SPI patch which Grant - even though previously acked by himself - appeared to raise objections. So I removed it until the situation is clarified. Other than that all the patches have the acks from their respective maintainers, all MIPS and x86 defconfigs are building fine and I'm not aware of any problems introduced by this series. Among the key features for this patch series is a sizable patchset for Lantiq which among other things introduces support for Lantiq's flagship product, the FALCON SOC. It also means that the opensource developers behind this patchset have overtaken Lantiq's competing inhouse development team that was working behind closed doors. Less noteworthy the ath79 patchset which adds support for a few more chip variants, cleanups and fixes. Finally the usual dose of tweaking of generic code." Fix up trivial conflicts in arch/mips/lantiq/xway/gpio_{ebu,stp}.c where printk spelling fixes clashed with file move and eventual removal of the printk. * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (81 commits) MIPS: lantiq: remove orphaned code MIPS: Remove all -Wall and almost all -Werror usage from arch/mips. MIPS: lantiq: implement support for FALCON soc MTD: MIPS: lantiq: verify that the NOR interface is available on falcon soc MTD: MIPS: lantiq: implement OF support watchdog: MIPS: lantiq: implement OF support and minor fixes SERIAL: MIPS: lantiq: implement OF support GPIO: MIPS: lantiq: convert gpio-stp-xway to OF GPIO: MIPS: lantiq: convert gpio-mm-lantiq to OF and of_mm_gpio GPIO: MIPS: lantiq: move gpio-stp and gpio-ebu to the subsystem folder MIPS: pci: convert lantiq driver to OF MIPS: lantiq: convert dma to platform driver MIPS: lantiq: implement support for clkdev api MIPS: lantiq: drop ltq_gpio_request() and gpio_to_irq() OF: MIPS: lantiq: implement irq_domain support OF: MIPS: lantiq: implement OF support MIPS: lantiq: drop mips_machine support OF: PCI: const usage needed by MIPS MIPS: Cavium: Remove smp_reserve_lock. MIPS: Move cache setup to setup_arch(). ... -
git://git.linaro.org/people/rmk/linux-armLinus Torvalds authored
Pull arm updates from Russell King: "This contains both some fixes found when trying to get the Assabet+neponset setup as a replacement firewall with a 3c589 PCMCIA card, and a bunch of changes from Al to fix up the ARM signal handling, particularly some of the restart behaviour." * 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: ARM: neponset: make sure neponset_ncr_frob() is exported ARM: fix out[bwl]() arm: don't open-code ptrace_report_syscall() arm: bury unused _TIF_RESTORE_SIGMASK arm: remove unused restart trampoline arm: new way of handling ERESTART_RESTARTBLOCK arm: if we get into work_pending while returning to kernel mode, just go away arm: don't call try_to_freeze() from do_signal() arm: if there's no handler we need to restore sigmask, syscall or no syscall arm: trim _TIF_WORK_MASK, get rid of useless test and branch... arm: missing checks of __get_user()/__put_user() return values
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Linus Torvalds authored
Merge patches through Andrew Morton: "180 patches - err 181 - listed below: - most of MM. I held back the (large) "memcg: add hugetlb extension" series because a bunfight has recently broken out. - leds. After this, Bryan Wu will be handling drivers/leds/ - backlight - lib/ - rtc" * emailed from Andrew Morton <akpm@linux-foundation.org>: (181 patches) drivers/rtc/rtc-s3c.c: fix compiler warning drivers/rtc/rtc-tegra.c: clean up probe/remove routines drivers/rtc/rtc-pl031.c: remove RTC timer interrupt handling drivers/rtc/rtc-lpc32xx.c: add device tree support drivers/rtc/rtc-m41t93.c: don't let get_time() reset M41T93_FLAG_OF rtc: ds1307: add trickle charger support rtc: ds1307: remove superfluous initialization rtc: rename CONFIG_RTC_MXC to CONFIG_RTC_DRV_MXC drivers/rtc/Kconfig: place RTC_DRV_IMXDI and RTC_MXC under "on-CPU RTC drivers" drivers/rtc/rtc-pcf8563.c: add RTC_VL_READ/RTC_VL_CLR ioctl feature rtc: add ioctl to get/clear battery low voltage status drivers/rtc/rtc-ep93xx.c: convert to use module_platform_driver() rtc/spear: add Device Tree probing capability lib/vsprintf.c: "%#o",0 becomes '0' instead of '00' radix-tree: fix preload vector size spinlock_debug: print kallsyms name for lock vsprintf: fix %ps on non symbols when using kallsyms lib/bitmap.c: fix documentation for scnprintf() functions lib/string_helpers.c: make arrays static lib/test-kstrtox.c: mark const init data with __initconst instead of __initdata ... -
Sachin Kamat authored
rtc-s3c.c:673:32: warning: `s3c_rtc_drv_data_array' defined but not used [-Wunused-variable] Signed-off-by:
Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Hannu Heikkinen authored
Use the devres managed resource functions in the probe routine. Also affects the remove routine where the previously used free and release functions are not needed. The devm_* functions eliminate the need for manual resource releasing and simplify error handling. Resources allocated by devm_* are freed automatically on driver detach. Signed-off-by:
Hannu Heikkinen <ext-hannu.m.heikkinen@nokia.com> Acked-by:
Stephen Warren <swarren@wwwdotorg.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by:
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Rajkumar Kasirajan authored
Remove RTT interrupt handling, since PIE mode interrupts are now better emulated in generic code via an hrtimer we have no need for this, and there is no codepath in the driver that enables these periodic interrupts anyway. Signed-off-by:
Rajkumar Kasirajan <rajkumar.kasirajan@stericsson.com> Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Cc: Mattias Wallin <mattias.wallin@stericsson.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by:
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Roland Stigge authored
Adds device tree support for rtc-lpc32xx.c Signed-off-by:
Roland Stigge <stigge@antcom.de> Acked-by:
Rob Herring <rob.herring@calxeda.com> Acked-by:
Arnd Bergmann <arnd@arndb.de> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by:
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Nikolaus Voss authored
If the rtc reports the time might be invalid due to oscillator failure, M41T93_FLAG_OF flag must not be reset by get_time() as the read operation doesn't make the time valid. Without this patch, only the first get_time() reported an invalid time, the second get_time() reported a valid time althought the reported time is probably wrong due to oscillator failure. Instead of resetting in get_time(), with this patch M41T93_FLAG_OF is reset in set_time() when a valid time is to be written. Signed-off-by:
Nikolaus Voss <n.voss@weinmann.de> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by:
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Wolfram Sang authored
Some DS13XX devices have "trickle chargers". Its configuration register is at different locations, the setup is the same, though. Since the configuration is board specific, introduce a platform_data to this driver. Tested with a DS1339 on a custom board. Signed-off-by:
Wolfram Sang <w.sang@pengutronix.de> Cc: Alessandro Zummo <alessandro.zummo@towertech.it> Signed-off-by:
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Wolfram Sang authored
ds1307 was kzalloced, so no need to zero members of the struct. Signed-off-by:
Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by:
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Fabio Estevam authored
In order to keep consistency with other rtc drivers,rename CONFIG_RTC_MXC to CONFIG_RTC_DRV_MXC. Signed-off-by:
Fabio Estevam <fabio.estevam@freescale.com> Acked-by:
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Fabio Estevam authored
RTC_DRV_IMXDI and RTC_MXC are on-chip RTC modules, so move them under "on-CPU RTC drivers" selection menu. While at it change the dependency of RTC_DRV_IMXDI from ARCH_MX25 to SOC_IMX25. Signed-off-by:
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Alexander Stein authored
Changes are based on arch/cris/arch-v10/drivers/pcf8563.c [akpm@linux-foundation.org: fix sparse warning] Signed-off-by:
Alexander Stein <alexander.stein@systec-electronic.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Mikael Starvik <starvik@axis.com> Acked-by:
Jesper Nilsson <jesper.nilsson@axis.com> Cc: Wu Fengguang <wfg@linux.intel.com> Signed-off-by:
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Alexander Stein authored
Currently there is no generic way to get the RTC battery status within an application. So add an ioctl to read the status bit. The idea is that the bit is set once a low voltage is detected. It stays there until it is reset using the RTC_VL_CLR ioctl. Signed-off-by:
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H Hartley Sweeten authored
Use module_platform_driver() to remove the boilerplate code. Also, change the probe and remove functions to __devinit/__devexit. Signed-off-by:
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Viresh Kumar authored
SPEAr platforms now support DT and so must convert all drivers support DT. This patch adds DT probing support for rtc and updates its documentation too. Signed-off-by:
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Pierre Carrier authored
number()'s behaviour is slighly changed: 0 becomes "0" instead of "00" when using the flag SPECIAL and base 8. Before: Number\Format %o %#o %x %#x 0 0 00 0 0x0 1 1 01 1 0x1 16 20 020 10 0x10 After: Number\Format %o %#o %x %#x 0 0 0 0 0x0 1 1 01 1 0x1 16 20 020 10 0x10 Signed-off-by:Pierre Carrier <pierre@spotify.com> Acked-by:
Stephen Rothwell <sfr@canb.auug.org.au> Cc: Joe Perches <joe@perches.com> Signed-off-by:
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Nick Piggin authored
We are not preallocating a sufficient number of nodes. Signed-off-by:
Nick Piggin <npiggin@kernel.dk> Signed-off-by:
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Stephen Boyd authored
When a spinlock warning is printed we usually get BUG: spinlock bad magic on CPU#0, modprobe/111 lock: 0xdff09f38, .magic: 00000000, .owner: /0, .owner_cpu: 0 but it's nicer to print the symbol for the lock if we have it so that we can avoid 'grep dff09f38 /proc/kallsyms' to find out which lock it was. Use kallsyms to print the symbol name so we get something a bit easier to read BUG: spinlock bad magic on CPU#0, modprobe/112 lock: test_lock, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 If the lock is not in kallsyms %ps will fall back to printing the address directly. Signed-off-by:
Stephen Boyd <sboyd@codeaurora.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by:
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Stephen Boyd authored
Using %ps in a printk format will sometimes fail silently and print the empty string if the address passed in does not match a symbol that kallsyms knows about. But using %pS will fall back to printing the full address if kallsyms can't find the symbol. Make %ps act the same as %pS by falling back to printing the address. While we're here also make %ps print the module that a symbol comes from so that it matches what %pS already does. Take this simple function for example (in a module): static void test_printk(void) { int test; pr_info("with pS: %pS\n", &test); pr_info("with ps: %ps\n", &test); } Before this patch: with pS: 0xdff7df44 with ps: After this patch: with pS: 0xdff7df44 with ps: 0xdff7df44 Signed-off-by:
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