linux/kernel/power/user.c, branch v5.7

PM / sleep: handle the compat case in snapshot_set_swap_area()

2020-04-06T19:42:36Z

Use in_compat_syscall to copy directly from the 32-bit ABI structure. Signed-off-by: Christoph Hellwig Signed-off-by: Rafael J. Wysocki

PM / sleep: move SNAPSHOT_SET_SWAP_AREA handling into a helper

2020-04-06T19:42:36Z

Move the handling of the SNAPSHOT_SET_SWAP_AREA ioctl from the main ioctl helper into a helper function. Signed-off-by: Christoph Hellwig Signed-off-by: Rafael J. Wysocki

Merge tag 'char-misc-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2020-04-03T20:22:40Z

Pull char/misc driver updates from Greg KH: "Here is the big set of char/misc/other driver patches for 5.7-rc1. Lots of things in here, and it's later than expected due to some reverts to resolve some reported issues. All is now clean with no reported problems in linux-next. Included in here is: - interconnect updates - mei driver updates - uio updates - nvmem driver updates - soundwire updates - binderfs updates - coresight updates - habanalabs updates - mhi new bus type and core - extcon driver updates - some Kconfig cleanups - other small misc driver cleanups and updates As mentioned, all have been in linux-next for a while, and with the last two reverts, all is calm and good" * tag 'char-misc-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (174 commits) Revert "driver core: platform: Initialize dma_parms for platform devices" Revert "amba: Initialize dma_parms for amba devices" amba: Initialize dma_parms for amba devices driver core: platform: Initialize dma_parms for platform devices bus: mhi: core: Drop the references to mhi_dev in mhi_destroy_device() bus: mhi: core: Initialize bhie field in mhi_cntrl for RDDM capture bus: mhi: core: Add support for reading MHI info from device misc: rtsx: set correct pcr_ops for rts522A speakup: misc: Use dynamic minor numbers for speakup devices mei: me: add cedar fork device ids coresight: do not use the BIT() macro in the UAPI header Documentation: provide IBM contacts for embargoed hardware nvmem: core: remove nvmem_sysfs_get_groups() nvmem: core: use is_bin_visible for permissions nvmem: core: use device_register and device_unregister nvmem: core: add root_only member to nvmem device struct extcon: axp288: Add wakeup support extcon: Mark extcon_get_edev_name() function as exported symbol extcon: palmas: Hide error messages if gpio returns -EPROBE_DEFER dt-bindings: extcon: usbc-cros-ec: convert extcon-usbc-cros-ec.txt to yaml format ...

misc: cleanup minor number definitions in c file into miscdevice.h

2020-03-18T11:27:03Z

HWRNG_MINOR and RNG_MISCDEV_MINOR are duplicate definitions, use unified HWRNG_MINOR instead and moved into miscdevice.h ANSLCD_MINOR and LCD_MINOR are duplicate definitions, use unified LCD_MINOR instead and moved into miscdevice.h MISCDEV_MINOR is renamed to PXA3XX_GCU_MINOR and moved into miscdevice.h Other definitions are just moved without any change. Link: https://lore.kernel.org/lkml/20200120221323.GJ15860@mit.edu/t/ Suggested-by: Arnd Bergmann Build-tested-by: Willy TARREAU Build-tested-by: Miguel Ojeda Signed-off-by: Zhenzhong Duan Acked-by: Miguel Ojeda Acked-by: Arnd Bergmann Acked-by: Herbert Xu Link: https://lore.kernel.org/r/20200311071654.335-2-zhenzhong.duan@gmail.com Signed-off-by: Greg Kroah-Hartman

PM / hibernate: Remove unnecessary compat ioctl overrides

2020-03-14T10:55:08Z

Since the SNAPSHOT_GET_IMAGE_SIZE, SNAPSHOT_AVAIL_SWAP_SIZE, and SNAPSHOT_ALLOC_SWAP_PAGE ioctls produce an loff_t result, and loff_t is always 64-bit even in the compat case, there's no reason to have the special compat handling for these ioctls. Just remove this unneeded code so that these ioctls call into snapshot_ioctl() directly, doing just the compat_ptr() conversion on the argument. (This unnecessary code was also causing a KMSAN false positive.) Signed-off-by: Eric Biggers Signed-off-by: Rafael J. Wysocki

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428

2019-06-05T15:37:16Z

Based on 1 normalized pattern(s): this file is released under the gplv2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 68 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Armijn Hemel Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190114.292346262@linutronix.de Signed-off-by: Greg Kroah-Hartman

PM / sleep: Refactor filesystems sync to reduce duplication

2019-04-02T08:53:19Z

Create a common helper to sync filesystems for system suspend and hibernation. Signed-off-by: Harry Pan Acked-by: Pavel Machek [ rjw: Changelog ] Signed-off-by: Rafael J. Wysocki

PM / reboot: Eliminate race between reboot and suspend

2018-08-06T10:35:20Z

At present, "systemctl suspend" and "shutdown" can run in parrallel. A system can suspend after devices_shutdown(), and resume. Then the shutdown task goes on to power off. This causes many devices are not really shut off. Hence replacing reboot_mutex with system_transition_mutex (renamed from pm_mutex) to achieve the exclusion. The renaming of pm_mutex as system_transition_mutex can be better to reflect the purpose of the mutex. Signed-off-by: Pingfan Liu Acked-by: Pavel Machek Signed-off-by: Rafael J. Wysocki

PM / hibernate: Fix oops at snapshot_write()

2018-05-27T10:00:02Z

syzbot is reporting NULL pointer dereference at snapshot_write() [1]. This is because data->handle is zero-cleared by ioctl(SNAPSHOT_FREE). Fix this by checking data_of(data->handle) != NULL before using it. [1] https://syzkaller.appspot.com/bug?id=828a3c71bd344a6de8b6a31233d51a72099f27fd Signed-off-by: Tetsuo Handa Reported-by: syzbot Signed-off-by: Rafael J. Wysocki

fs: add ksys_sync() helper; remove in-kernel calls to sys_sync()

2018-04-02T18:16:05Z

Using this helper allows us to avoid the in-kernel calls to the sys_sync() syscall. The ksys_ prefix denotes that this function is meant as a drop-in replacement for the syscall. In particular, it uses the same calling convention as sys_sync(). This patch is part of a series which removes in-kernel calls to syscalls. On this basis, the syscall entry path can be streamlined. For details, see http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net Cc: Alexander Viro Signed-off-by: Dominik Brodowski