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* tree-wide: use reinit_completion instead of INIT_COMPLETIONWolfram Sang2013-11-153-8/+8
| | | | | | | | | | | | Use this new function to make code more comprehensible, since we are reinitialzing the completion, not initializing. [akpm@linux-foundation.org: linux-next resyncs] Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> (personally at LCE13) Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge tag 'devicetree-for-3.13' of ↵Linus Torvalds2013-11-122-0/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree updates from Rob Herring: "DeviceTree updates for 3.13. This is a bit larger pull request than usual for this cycle with lots of clean-up. - Cross arch clean-up and consolidation of early DT scanning code. - Clean-up and removal of arch prom.h headers. Makes arch specific prom.h optional on all but Sparc. - Addition of interrupts-extended property for devices connected to multiple interrupt controllers. - Refactoring of DT interrupt parsing code in preparation for deferred probe of interrupts. - ARM cpu and cpu topology bindings documentation. - Various DT vendor binding documentation updates" * tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (82 commits) powerpc: add missing explicit OF includes for ppc dt/irq: add empty of_irq_count for !OF_IRQ dt: disable self-tests for !OF_IRQ of: irq: Fix interrupt-map entry matching MIPS: Netlogic: replace early_init_devtree() call of: Add Panasonic Corporation vendor prefix of: Add Chunghwa Picture Tubes Ltd. vendor prefix of: Add AU Optronics Corporation vendor prefix of/irq: Fix potential buffer overflow of/irq: Fix bug in interrupt parsing refactor. of: set dma_mask to point to coherent_dma_mask of: add vendor prefix for PHYTEC Messtechnik GmbH DT: sort vendor-prefixes.txt of: Add vendor prefix for Cadence of: Add empty for_each_available_child_of_node() macro definition arm/versatile: Fix versatile irq specifications. of/irq: create interrupts-extended property microblaze/pci: Drop PowerPC-ism from irq parsing of/irq: Create of_irq_parse_and_map_pci() to consolidate arch code. of/irq: Use irq_of_parse_and_map() ...
| * drivers: clean-up prom.h implicit includesRob Herring2013-10-102-0/+4
| | | | | | | | | | | | | | | | Powerpc is a mess of implicit includes by prom.h. Add the necessary explicit includes to drivers in preparation of prom.h cleanup. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Grant Likely <grant.likely@linaro.org>
* | Merge tag 'driver-core-3.13-rc1' of ↵Linus Torvalds2013-11-072-6/+7
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core / sysfs patches from Greg KH: "Here's the big driver core / sysfs update for 3.13-rc1. There's lots of dev_groups updates for different subsystems, as they all get slowly migrated over to the safe versions of the attribute groups (removing userspace races with the creation of the sysfs files.) Also in here are some kobject updates, devres expansions, and the first round of Tejun's sysfs reworking to enable it to be used by other subsystems as a backend for an in-kernel filesystem. All of these have been in linux-next for a while with no reported issues" * tag 'driver-core-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (83 commits) sysfs: rename sysfs_assoc_lock and explain what it's about sysfs: use generic_file_llseek() for sysfs_file_operations sysfs: return correct error code on unimplemented mmap() mdio_bus: convert bus code to use dev_groups device: Make dev_WARN/dev_WARN_ONCE print device as well as driver name sysfs: separate out dup filename warning into a separate function sysfs: move sysfs_hash_and_remove() to fs/sysfs/dir.c sysfs: remove unused sysfs_get_dentry() prototype sysfs: honor bin_attr.attr.ignore_lockdep sysfs: merge sysfs_elem_bin_attr into sysfs_elem_attr devres: restore zeroing behavior of devres_alloc() sysfs: fix sysfs_write_file for bin file input: gameport: convert bus code to use dev_groups input: serio: remove bus usage of dev_attrs input: serio: use DEVICE_ATTR_RO() i2o: convert bus code to use dev_groups memstick: convert bus code to use dev_groups tifm: convert bus code to use dev_groups virtio: convert bus code to use dev_groups ipack: convert bus code to use dev_groups ...
| * | tifm: convert bus code to use dev_groupsGreg Kroah-Hartman2013-10-171-4/+6
| |/ | | | | | | | | | | | | | | | | | | The dev_attrs field of struct bus_type is going away soon, dev_groups should be used instead. This converts the tifm bus code to use the correct field. Cc: Alex Dubov <oakad@yahoo.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | misc: mic: Fixes for randconfig build errors and warnings.Ashutosh Dixit2013-10-303-2/+4
| | | | | | | | | | | | | | | | | | | | | | This patch fixes the build errors and warnings reported at https://lkml.org/lkml/2013/10/29/421. Co-author: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com> Reported-by: Jim Davis <jim.epost@gmail.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | tifm: fix error return code in tifm_7xx1_probe()Wei Yongjun2013-10-301-1/+3
| | | | | | | | | | | | | | | | Fix to return ENODEV in the pci ioremap error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | misc/at24: avoid infinite loop on write()Vladimir Zapolskiy2013-10-301-0/+3
| | | | | | | | | | | | | | | | | | | | | | This change fixes a problem of infinite zero byte write() without an error status, if there is an attempt to write a file bigger than EEPROM size over sysfs interface. Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> Cc: Wolfram Sang <w.sang@pengutronix.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | misc/93xx46: avoid infinite loop on write()Vladimir Zapolskiy2013-10-301-1/+1
| | | | | | | | | | | | | | | | | | | | This change fixes a problem of infinite zero byte write() without an error status, if there is an attempt to write a file bigger than EEPROM size over sysfs interface. Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | misc: atmel_pwm: add deferred-probing supportJohan Hovold2013-10-301-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | Two drivers (atmel-pwm-bl and leds-atmel-pwm) currently depend on the atmel_pwm driver to have bound to any pwm-device before their devices are probed. Support deferred probing of such devices by making sure to return -EPROBE_DEFER from pwm_channel_alloc when no pwm-device has yet been bound. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: wd: host_init propagate error codes from called functionsTomas Winkler2013-10-301-6/+6
| | | | | | | | | | | | | | Propagate error codes from called functions, they are correct. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: replace stray pr_debug with dev_dbgAlexander Usyskin2013-10-301-1/+1
| | | | | | | | | | | | | | | | Driver better use dev_dbg, not pr_debug. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: bus: propagate error code returned by mei_me_cl_by_idTomas Winkler2013-10-301-1/+1
| | | | | | | | | | | | | | | | no need to change error code value returned by mei_me_cl_by_id, just propagate it on Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: mei_cl_link remove duplicated check for open_handle_countTomas Winkler2013-10-301-6/+0
| | | | | | | | | | Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: print correct device state during unexpected resetAlexander Usyskin2013-10-301-4/+4
| | | | | | | | | | | | | | | | | | Move the unexpected state print to the beginning of mei_reset, thus printing right state. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: nfc: fix memory leak in error pathTomas Winkler2013-10-301-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | The flow may reach the err label without freeing cl and cl_info cl and cl_info weren't assigned to ndev->cl and cl_info so they weren't freed in mei_nfc_free called on error path Cc: <stable@vger.kernel.org> # 3.10+ Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | lkdtm: add tests for additional page permissionsKees Cook2013-10-301-0/+61
| | | | | | | | | | | | | | | | | | | | Testing execution and access of userspace from the kernel is needed for validating things like Intel's SMEP and SMAP protections. Additionally, add an explicit test for validating that RO page permissions have been set for the RO data area. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | lkdtm: adjust recursion size to avoid warningsKees Cook2013-10-301-10/+20
| | | | | | | | | | | | | | | | | | | | | | When CONFIG_FRAME_WARN is set low (e.g. some ARM builds), the hard-coded stack buffer size used for kernel stack over run testing triggers build warnings. Instead, avoid the warning by recalcuating the buffer size and recursion count needed to trigger the test. Also uses the recursion counter indirectly to avoid changing the parameter during the test. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | lkdtm: isolate stack corruption testKees Cook2013-10-251-6/+10
| | | | | | | | | | | | | | | | | | | | | | When tests were added to lkdtm that grew the stack frame, the stack corruption test stopped working. This isolates the test in its own function, and forces it not to be inlined. Signed-off-by: Kees Cook <keescook@chromium.org> Fixes: cc33c537c12f ("lkdtm: add "EXEC_*" triggers") Cc: stable <stable@vger.kernel.org> # 3.12 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: move host_clients_map cleanup to device initAlexander Usyskin2013-10-202-9/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Move host_clients_map cleanup from host client init to device init. This fixes bug where we cleaned up the bitmask that servers as pool for host client ids while file descriptors are kept open during suspend. On resume a new connection will be assigned id that is already taken by opened file descriptor. Consequently read/write will fail due to mismatched book keeping. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: me: downgrade two errors to debug levelPaul Bolle2013-10-201-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | The mei_me driver prints "suspend" at error level at each suspend. It also prints "stop" at error level at driver unload. Downgrade these uninteresting messages to debug level. Cc: Adam Jackson <ajax@redhat.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | misc: phantom: remove deprecated IRQF_DISABLEDMichael Opdenacker2013-10-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | This patch proposes to remove the use of the IRQF_DISABLED flag It's a NOOP since 2.6.35 and it will be removed one day. Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | misc: arm-charlcd: remove deprecated IRQF_DISABLEDMichael Opdenacker2013-10-161-1/+1
| | | | | | | | | | | | | | | | | | | | This patch proposes to remove the use of the IRQF_DISABLED flag It's a NOOP since 2.6.35 and it will be removed one day. Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: me: add Lynx Point Wellsburg work station device idTomas Winkler2013-10-162-0/+2
| | | | | | | | | | | | | | add missing device id for LPT based work station Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | misc/at25, dt: support probing at25 SPI EEPROM from DTJan Luebbe2013-10-161-0/+7
| | | | | | | | | | | | | | | | | | | | | | The commit d6ae0d578d24303941c1424b049d2cae28277666 introduced devicetree binding documentation for this driver, but the driver itself does not yet support the documented compatible entry. Fix this by adding the documented entry to the driver. Signed-off-by: Jan Luebbe <jlu@pengutronix.de> Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | vmw_vmci: Convert driver to use get_user_pages_fast()Jan Kara2013-10-062-20/+7
| | | | | | | | | | | | | | | | | | | | | | Convert vmci_host_setup_notify() and qp_host_get_user_memory() to use get_user_pages_fast() instead of get_user_pages(). Note that qp_host_get_user_memory() was using mmap_sem for writing without an apparent reason. CC: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | misc: mic: Enable OSPM suspend and resume support.Dasaratharaman Chandramouli2013-10-064-5/+193
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables support for OSPM suspend and resume in the MIC driver. During a host suspend event, the driver performs an orderly shutdown of the cards if they are online. Upon resume, any cards that were previously online before suspend are rebooted. The driver performs an orderly shutdown of the card primarily to ensure that applications in the card are terminated and mounted devices are safely un-mounted before the card is powered down in the event of an OSPM suspend. The driver makes use of the MIC daemon to accomplish OSPM suspend and resume. The driver registers a PM notifier per MIC device. The devices get notified synchronously during PM_SUSPEND_PREPARE and PM_POST_SUSPEND phases. During the PM_SUSPEND_PREPARE phase, the driver performs one of the following three tasks. 1) If the card is 'offline', the driver sets the card to a 'suspended' state and returns. 2) If the card is 'online', the driver initiates card shutdown by setting the card state to suspending. This notifies the MIC daemon which invokes shutdown and sets card state to 'suspended'. The driver returns after the shutdown is complete. 3) If the card is already being shutdown, possibly by a host user space application, the driver sets the card state to 'suspended' and returns after the shutdown is complete. During the PM_POST_SUSPEND phase, the driver simply notifies the daemon and returns. The daemon boots those cards that were previously online during the suspend phase. Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | misc: bh1780: probe from compatible stringLinus Walleij2013-10-041-0/+11
| | | | | | | | | | | | | | | | | | | | Currently the BH1780GLI I2C driver relies on the device tree node having the right name, but this is fragile. Use the compatible string to probe the driver instead. Acked-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: amthif: mei_amthif_host_init: propagate errors from called functionsTomas Winkler2013-10-041-4/+7
| | | | | | | | | | | | | | propagate error codes from called functions, they are correct. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: revamp open handler countsTomas Winkler2013-10-045-16/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make open counter to be incremented and decremented from mei_cl_link and mei_cl_unlik function respectively Nfc was assuming symmetric linking API and thus open handler count was never decreased. This patch fixes that. We need to add separate open hander count for amthif which is handled out of link/unlink functions and doesn't break the symmetric API. Last we do not waste clients slots if amthif or wd are not present in the device. we don't need to allocates slots ahead it is all covered by link/unlink before the devices is responding to user space connection and thus not racing on allocation Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mei: simplify mei_open error handlingTomas Winkler2013-10-042-18/+21
| | | | | | | | | | | | | | | | | | 1. Perform simple checks first and only then attempt to allocate cl structure. 2. Remove open_handler_count test, this is already checked in mei_cl_link function 3. return -EMFILE instead of -ENOENT as expected by user space Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | Merge 3.12-rc3 into char-misc-nextGreg Kroah-Hartman2013-09-307-15/+27
|\| | | | | | | | | | | | | We need/want the mei fixes in here so we can apply other updates that are depending on them. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * mei: cancel stall timers in mei_resetAlexander Usyskin2013-09-262-0/+4
| | | | | | | | | | | | | | | | | | | | | | Unset init_clients_timer and amthif_stall_timers in mei_reset in order to cancel timer ticking and hence avoid recursive reset calls. Cc: <stable@vger.kernel.org> # 3.9+ Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * mei: bus: stop wait for read during cl state transitionTomas Winkler2013-09-263-8/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Bus layer omitted check for client state transition while waiting for read completion The client state transition may occur for example as result of firmware initiated reset Add mei_cl_is_transitioning wrapper to reduce the code repetition.: Cc: <stable@vger.kernel.org> # 3.9+ Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * mei: make me client counters less error proneTomas Winkler2013-09-262-7/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | 1. u8 counters are prone to hard to detect overflow: make them unsigned long to match bit_ functions argument type 2. don't check me_clients_num for negativity, it is unsigned. 3. init all the me client counters from one place Cc: <stable@vger.kernel.org> # 3.9+ Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | misc: mic: depend on X86 for both host and card drivers.Sudeep Dutt2013-09-281-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes build failures seen on certain non X86 architectures. The card driver should correctly always depend on X86. The host driver can potentially work on non X86 architectures although it has never been built or validated in such configurations. The host driver dependency on X86 can be removed at some point in the future but this workaround is required for now. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | misc: mic: cleanups for "--strict" checkpatch.Ashutosh Dixit2013-09-2810-133/+123
| | | | | | | | | | | | | | | | | | | | | | | | | | These changes were mostly authored by Joe Perches <joe@perches.com> @ https://lkml.org/lkml/2013/9/5/602 Reported-by: Joe Perches <joe@perches.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | misc: mic: header file cleanups.Sudeep Dutt2013-09-2814-15/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Dont use same name for header files in different folders. These changes were suggested by Greg Kroah-Hartman during the code review @ https://lkml.org/lkml/2013/9/6/18 Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | misc: mic: host driver sysfs cleanups.Sudeep Dutt2013-09-281-43/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | + Use DEVICE_ATTR_RO/RW instead of DEVICE_ATTR + Use ATTRIBUTE_GROUPS These changes were suggested by Greg Kroah-Hartman during the code review @ https://lkml.org/lkml/2013/9/6/13 Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | mmc: cb710: drop free_irq for devm_request_irq allocated irqWei Yongjun2013-09-261-1/+1
| | | | | | | | | | | | | | | | | | irq allocated with devm_request_irq should not be freed using free_irq, because doing so causes a dangling pointer, and a subsequent double free. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | Intel MIC Card Driver Changes for Virtio Devices.Ashutosh Dixit2013-09-265-0/+717
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces the card "Virtio over PCIe" interface for Intel MIC. It allows virtio drivers on the card to communicate with their user space backends on the host via a device page. Ring 3 apps on the host can add, remove and configure virtio devices. A thin MIC specific virtio_config_ops is implemented which is borrowed heavily from previous similar implementations in lguest and s390 @ drivers/lguest/lguest_device.c drivers/s390/kvm/kvm_virtio.c Co-author: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | Intel MIC Host Driver Changes for Virtio Devices.Ashutosh Dixit2013-09-2611-1/+1277
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces the host "Virtio over PCIe" interface for Intel MIC. It allows creating user space backends on the host and instantiating virtio devices for them on the Intel MIC card. It uses the existing VRINGH infrastructure in the kernel to access virtio rings from the host. A character device per MIC is exposed with IOCTL, mmap and poll callbacks. This allows the user space backend to: (a) add/remove a virtio device via a device page. (b) map (R/O) virtio rings and device page to user space. (c) poll for availability of data. (d) copy a descriptor or entire descriptor chain to/from the card. (e) modify virtio configuration. (f) handle virtio device reset. The buffers are copied over using CPU copies for this initial patch and host initiated MIC DMA support is planned for future patches. The avail and desc virtio rings are in host memory and the used ring is in card memory to maximize writes across PCIe for performance. Co-author: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | Intel MIC Card Driver for X100 family.Sudeep Dutt2013-09-268-0/+895
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch does the following: a) Initializes the Intel MIC X100 platform device and driver. b) Sets up support to handle shutdown requests from the host. c) Maps the device page after obtaining the device page address from the scratchpad registers updated by the host. d) Informs the host upon a card crash by registering a panic notifier. e) Informs the host upon a poweroff/halt event. Co-author: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | Intel MIC Host Driver, card OS state management.Sudeep Dutt2013-09-269-4/+1365
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables the following features: a) Boots and shuts down the card via sysfs entries. b) Allocates and maps a device page for communication with the card driver and updates the device page address via scratchpad registers. c) Provides sysfs entries for shutdown status, kernel command line, ramdisk and log buffer information. Co-author: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | Intel MIC Host Driver Interrupt/SMPT support.Dasaratharaman Chandramouli2013-09-269-2/+1638
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables the following features: a) MSIx, MSI and legacy interrupt support. b) System Memory Page Table(SMPT) support. SMPT enables system memory access from the card. On X100 devices the host can program 32 SMPT registers each capable of accessing 16GB of system memory address space from X100 devices. The registers can thereby be used to access a cumulative 512GB of system memory address space from X100 devices at any point in time. Co-author: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | Intel MIC Host Driver for X100 family.Sudeep Dutt2013-09-2611-0/+708
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables the following: a) Initializes the Intel MIC X100 PCIe devices. b) Provides sysfs entries for family and stepping information. Co-author: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | VMCI: fix to pass correct device identity to free_irq()Wei Yongjun2013-09-261-1/+1
| | | | | | | | | | | | | | | | | | free_irq() expects the same device identity that was passed to corresponding request_irq(), otherwise the IRQ is not freed. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Dmitry Torokhov <dtor@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | ARM: sunxi: Initial support for Allwinner's Security ID fusesOliver Schinagl2013-09-263-0/+172
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allwinner has electric fuses (efuse) on their line of chips. This driver reads those fuses, seeds the kernel entropy and exports them as a sysfs node. These fuses are most likely to be programmed at the factory, encoding things like Chip ID, some sort of serial number, etc. and appear to be reasonably unique. While in theory, these should be writeable by the user, it will probably be inconvenient to do so. Allwinner recommends that a certain input pin, labeled 'efuse_vddq', be connected to GND. To write these fuses however, a 2.5 V programming voltage needs to be applied to this pin. Even so, they can still be used to generate a board-unique mac from, board unique RSA key and seed the kernel RNG. On sun7i additional storage is available, this is initially used for an UEFI BOOT key, Secure JTAG key, HDMI-HDCP key and vendor specific keys. Currently supported are the following known chips: Allwinner sun4i (A10) Allwinner sun5i (A10s, A13) Allwinner sun7i (A20) Signed-off-by: Oliver Schinagl <oliver@schinagl.nl> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | misc: pti: remove unnecessary pci_set_drvdata()Jingoo Han2013-09-261-1/+0
| | | | | | | | | | | | | | | | | | The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | misc: mei: remove unnecessary pci_set_drvdata()Jingoo Han2013-09-261-1/+0
| | | | | | | | | | | | | | | | | | The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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