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Message-Id: <20231221012040.17763-1-warthog618@gmail.com> Date: Thu, 21 Dec 2023 09:20:35 +0800 From: Kent Gibson <warthog618@...il.com> To: linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org, brgl@...ev.pl, linus.walleij@...aro.org, andy@...nel.org Cc: Kent Gibson <warthog618@...il.com> Subject: [PATCH v2 0/5] gpiolib: cdev: guard tidying This series contains some tidying up of gpiolib-cdev following the recent adoption of guard(). The first patch is a fix to protect gpio_ioctl() from having the gpio chip removed while the ioctl is in progress. The next couple of patches are minor fixes inspired by recent submissions and reviews for gpiolib.c. Patch 2 adds a missing include. Patch 3 switches allocation of struct linereq from kzalloc() to kvzalloc() as it can be larger than one page - even more so after the recent relocation of debounce_period_us. The final two patches replace wrapper functions with guards. Patch 4 tidies up the functions that use a guard on the linereq config_mutex. Patch 5 tidies up the functions that use a guard on the gpio_device. Changes v1 -> v2: - add patch 1 to protect gpio_ioctl() from chip removal - improve commit comment (patch 3) - use guard(rwsem_read) rather than rolling our own (patch 5) Cheers, Kent. Kent Gibson (5): gpiolib: cdev: add gpio_device locking wrapper around gpio_ioctl() gpiolib: cdev: include overflow.h gpiolib: cdev: allocate linereq using kvzalloc() gpiolib: cdev: replace locking wrappers for config_mutex with guards gpiolib: cdev: replace locking wrappers for gpio_device with guards drivers/gpio/gpiolib-cdev.c | 257 ++++++++++-------------------------- 1 file changed, 70 insertions(+), 187 deletions(-) -- 2.39.2
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