- 17 Aug, 2012 10 commits
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K. Y. Srinivasan authored
Gather information on the default gateways - ipv4/ipv6. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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K. Y. Srinivasan authored
Transform ipv6 subnet information to CIDR notation. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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K. Y. Srinivasan authored
Now, gather sub-net information for the specified interface. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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K. Y. Srinivasan authored
Now, gather address family information for the specified interface. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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K. Y. Srinivasan authored
In preparation for making kvp_get_ip_address() more generic, factor out the code for handling IP addresses. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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K. Y. Srinivasan authored
kvp_get_ip_address() implemented the functionality to retrieve IP address info. Make this function more generic so that we could retrieve additional per-interface information. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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K. Y. Srinivasan authored
Implement support for the new IP injection messages in the driver code. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
device_cache_fw_images need to iterate devices in system, so this patch applies the introduced dpm_for_each_dev to avoid link failure if CONFIG_FW_LOADER is m. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
dpm_list and its pm lock provide a good way to iterate all devices in system. Except this way, there is no other easy way to iterate devices in system. firmware loader need to cache firmware images for devices before system sleep, so introduce the function to meet its demand. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
'return 0' should be added to fw_pm_notify if !PM because return value of the funcion is defined as 'int'. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 16 Aug, 2012 25 commits
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Mark Brown authored
The operation of lockdep requires that all dynamically allocated sysfs nodes are initialised using sysfs_attr_init() otherwise lots of warnings are generated. Ensure that all the dynamically allocated attributes that extcon generates have this done. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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K. Y. Srinivasan authored
Use explicitly sized types in data structures defining the host/guest protocol. Reported-by: Juan Sanchez-Agrelo <jagrelo@cisco.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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K. Y. Srinivasan authored
In preparation to implementing IP injection, cleanup the way we propagate and handle errors both in the driver as well as in the user level daemon. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Olaf Hering <olaf@aepfle.de> Reviewed-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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K. Y. Srinivasan authored
Add the necessary definitions for supporting the IP injection functionality. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Olaf Hering <olaf@aepfle.de> Reviewed-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
This patch implements caching devices' firmware automatically during system syspend/resume cycle, so any device drivers can call request_firmware or request_firmware_nowait inside resume path to get the cached firmware if they have loaded firmwares successfully at least once before entering suspend. Signed-off-by: Ming Lei <ming.lei@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
Because device_cache_fw_images only cache the firmware which has been loaded sucessfully at leat once, using a small loading timeout should be reasonable. Signed-off-by: Ming Lei <ming.lei@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
This patch introduces the three helpers below: void device_cache_fw_images(void) void device_uncache_fw_images(void) void device_uncache_fw_images_delay(unsigned long) so we can use device_cache_fw_images() to cache firmware for all devices which need firmware to work, and the device driver can get the firmware easily from kernel memory when system isn't ready for completing requests of loading firmware. After system is ready for completing firmware loading, driver core will call device_uncache_fw_images() or its delay version to free the cached firmware. The above helpers will be used to cache device firmware during system suspend/resume cycle in the following patches. Signed-off-by: Ming Lei <ming.lei@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
This patch introduces one devres API of devres_for_each_res so that the device's driver can iterate each resource it has interest in. The firmware loader will use the API to get each firmware name from the device instance. Signed-off-by: Ming Lei <ming.lei@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
This patch will store firmware name into devres list of the device which is requesting firmware loading, so that we can implement auto cache and uncache firmware for devices in need. Signed-off-by: Ming Lei <ming.lei@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
request_firmware_nowait is allowed to be called in atomic context now if @gfp is GFP_ATOMIC, so fix the obsolete comments and states which situations are suitable for using it. Signed-off-by: Ming Lei <ming.lei@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
Callers of request_firmware* must hold the reference count of @device, otherwise it is easy to trigger oops since the firmware loader device is the child of @device. This patch adds comments about the usage. In fact, most of drivers call request_firmware* in its probe() or open(), so the constraint should be reasonable and can be satisfied. Also this patch holds the reference count of @device before schedule_work() in request_firmware_nowait() to avoid that the @device is released after request_firmware_nowait returns and before the worker function is scheduled. Signed-off-by: Ming Lei <ming.lei@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
This patches introduce two kernel APIs of cache_firmware and uncache_firmware, both of which take the firmware file name as the only parameter. So any drivers can call cache_firmware to cache the specified firmware file into kernel memory, and can use the cached firmware in situations which can't request firmware from user space. Signed-off-by: Ming Lei <ming.lei@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
This patch always let firmware_buf own the pages buffer allocated inside firmware_data_write, and add all instances of firmware_buf into the firmware cache global list. Also introduce one private field in 'struct firmware', so release_firmware will see the instance of firmware_buf associated with the current firmware instance, then just 'free' the instance of firmware_buf. The firmware_buf instance represents one pages buffer for one firmware image, so lots of firmware loading requests can share the same firmware_buf instance if they request the same firmware image file. This patch will make implementation of the following cache_firmware/ uncache_firmware very easy and simple. In fact, the patch improves request_formware/release_firmware: - only request userspace to write firmware image once if several devices share one same firmware image and its drivers call request_firmware concurrently. Signed-off-by: Ming Lei <ming.lei@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
This patch introduces struct firmware_buf to describe the buffer which holds the firmware data, which will make the following cache_firmware/uncache_firmware implemented easily. Signed-off-by: Ming Lei <ming.lei@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
If one device driver calls request_firmware_nowait() to request several different firmwares' loading, device_add() will return failure since all firmware loader device use same name of the device who is requesting firmware. This patch always use the name of firmware image as the firmware loader device name to fix the problem since the following patches for caching firmware will make sure only one loading for same firmware is alllowd at the same time. Signed-off-by: Ming Lei <ming.lei@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
The wmb() inside fw_load_abort is not necessary, since complete() and wait_on_completion() has implied one pair of memory barrier. Also wmb() isn't a correct usage, so just remove it. Signed-off-by: Ming Lei <ming.lei@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
This patch fixes two races in loading firmware: 1, FW_STATUS_DONE should be set before waking up the task waitting on _request_firmware_load, otherwise FW_STATUS_ABORT may be thought as DONE mistakenly. 2, Inside _request_firmware_load(), there is a small window between wait_for_completion() and mutex_lock(&fw_lock), and 'echo 1 > loading' still may happen during the period, so this patch checks FW_STATUS_DONE to prevent pages' buffer completed from being freed in firmware_loading_store. Signed-off-by: Ming Lei <ming.lei@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
This patch doesn't transfer ownership of pages' buffer to the instance of firmware until the firmware loading is completed, which will simplify firmware_loading_store a lot, so help to introduce the following cache_firmware and uncache_firmware mechanism during system suspend-resume cycle. In fact, this patch fixes one bug: if writing data into firmware loader device is bypassed between writting 1 and 0 to 'loading', OOPS will be triggered without the patch. Also handle the vmap failure case, and add some comments to make code more readable. Signed-off-by: Ming Lei <ming.lei@canonical.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Chris Wright authored
It's only used locally, no need to pollute global namespace. Signed-off-by: Chris Wright <chrisw@sous-sol.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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MyungJoo Ham authored
Replaced '_' with '-' in the extcon file names, which has been bogging since new drivers have been using the standard naming. Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Greg Kroah-Hartman authored
This reverts commit 980d7929 as it breaks the build with the error: ERROR: "extcon_cable_name" [drivers/extcon/extcon-adc-jack.ko] undefined! Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: anish kumar <anish.singh@samsung.com> Cc: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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anish kumar authored
External connector devices that decides connection information based on ADC values may use adc-jack device driver. The user simply needs to provide a table of adc range and connection states. Then, extcon framework will automatically notify others. Changes in V1: added Lars-Peter Clausen suggested changes: Using macros to get rid of boiler plate code such as devm_kzalloc and module_platform_driver.Other changes suggested are related to coding guidelines. Changes in V2: Removed some unnecessary checks and changed the way we are un-regitering extcon and freeing the irq while removing. Changes in V3: Renamed the files to comply with extcon naming. Changes in V4: Added the cancel_work_sync during removing of driver. Changes in V5: Added the dependency of IIO in Kconfig. Changes in V6: Some nitpicks related to naming. Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: anish kumar <anish.singh@samsung.com> Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Mark Brown authored
As well as identifying accessories the accessory detection hardware on Arizona class devices can also detect a number of buttons which we should report via the input API. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Jean Delvare authored
Right now we have support for explicit platform device IDs, as well as ID-less platform devices when a given device type can only have one instance. However there are cases where multiple instances of a device type can exist, and their IDs aren't (and can't be) known in advance and do not matter. In that case we need automatic device IDs to avoid device name collisions. I am using magic ID value -2 (PLATFORM_DEVID_AUTO) for this, similar to -1 for ID-less devices. The automatically allocated device IDs are global (to avoid an additional per-driver cost.) We keep note that the ID was automatically allocated so that it can be freed later. Note that we also restore the ID to PLATFORM_DEVID_AUTO on error and device deletion, to avoid avoid unexpected behavior on retry. I don't really expect retries on platform device addition, but better safe than sorry. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ming Lei authored
device_del can happen anytime, so once it happens, the devres of the device will be freed inside device_del, but drivers can't know it has been deleted and may still add resources into the device, so memory leak is caused. This patch moves the devres_release_all to fix the problem. Signed-off-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 14 Aug, 2012 2 commits
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K. Y. Srinivasan authored
Format GUIDS as per MSFT standard. This makes interacting with MSFT tool stack easier. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Olaf Hering <olaf@aepfle.de> Reviewed-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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K. Y. Srinivasan authored
The current guest ID string in use in vmbus driver does not conform to the MSFT guidelines on guest ID. MSFT currently does not specify Linux specific guidelines. MSFT however has plans to publish Linux specific guidelines. This implementation conforms to the yet unpublished Linux specific guidelines for guest ID. This implementation also broadly conforms to the current guidelines as well. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Cc: Bjørn Mork <bjorn@mork.no> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 02 Aug, 2012 3 commits
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Linus Torvalds authored
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git://dev.laptop.org/users/dilinger/linux-olpcLinus Torvalds authored
Pull OLPC platform updates from Andres Salomon: "These move the OLPC Embedded Controller driver out of arch/x86/platform and into drivers/platform/olpc. OLPC machines are now ARM-based (which means lots of x86 and ARM changes), but are typically pretty self-contained.. so it makes more sense to go through a separate OLPC tree after getting the appropriate review/ACKs." * 'for-linus-3.6' of git://dev.laptop.org/users/dilinger/linux-olpc: x86: OLPC: move s/r-related EC cmds to EC driver Platform: OLPC: move global variables into priv struct Platform: OLPC: move debugfs support from x86 EC driver x86: OLPC: switch over to using new EC driver on x86 Platform: OLPC: add a suspended flag to the EC driver Platform: OLPC: turn EC driver into a platform_driver Platform: OLPC: allow EC cmd to be overridden, and create a workqueue to call it drivers: OLPC: update various drivers to include olpc-ec.h Platform: OLPC: add a stub to drivers/platform/ for the OLPC EC driver
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds authored
Pull arm-soc Marvell Orion device-tree updates from Olof Johansson: "This contains a set of device-tree conversions for Marvell Orion platforms that were staged early but took a few tries to get the branch into a format where it was suitable for us to pick up. Given that most people working on these platforms are hobbyists with limited time, we were a bit more flexible with merging it even though it came in late." * tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (21 commits) ARM: Kirkwood: Replace mrvl with marvell ARM: Kirkwood: Describe GoFlex Net LEDs and SATA in DT. ARM: Kirkwood: Describe Dreamplug LEDs in DT. ARM: Kirkwood: Describe iConnects LEDs in DT. ARM: Kirkwood: Describe iConnects temperature sensor in DT. ARM: Kirkwood: Describe IB62x0 LEDs in DT. ARM: Kirkwood: Describe IB62x0 gpio-keys in DT. ARM: Kirkwood: Describe DNS32? gpio-keys in DT. ARM: Kirkwood: Move common portions into a kirkwood-dnskw.dtsi ARM: Kirkwood: Replace DNS-320/DNS-325 leds with dt bindings ARM: Kirkwood: Describe DNS325 temperature sensor in DT. ARM: Kirkwood: Use DT to configure SATA device. ARM: kirkwood: use devicetree for SPI on dreamplug ARM: kirkwood: Add LS-XHL and LS-CHLv2 support ARM: Kirkwood: Initial DTS support for Kirkwood GoFlex Net ARM: Kirkwood: Add basic device tree support for QNAP TS219. ATA: sata_mv: Add device tree support ARM: Orion: DTify the watchdog timer. ARM: Orion: Add arch support needed for I2C via DT. ARM: kirkwood: use devicetree for orion-spi ... Conflicts: drivers/watchdog/orion_wdt.c
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