Re: [PATCH RFT 1/2] gpio: gpio-ml-ioh: Use spinlock for register access protection

On Sun, Jul 29, 2012 at 4:54 AM, Axel Lin wrote: > gpio_chip.can_sleep is 0, but current code uses mutex in ioh_gpio_set, > ioh_gpio_get and ioh_gpio_direction_input functions. > Thus those functions are not callable from interrupt context. > This patch converts mutex into spinlock. > > Signed-of

Re: [PATCH RFT 1/2] gpio: gpio-ml-ioh: Use spinlock for register access protection

On Mon, 13 Aug 2012 14:01:31 +0200 Linus Walleij wrote: > On Sun, Jul 29, 2012 at 4:54 AM, Axel Lin wrote: > > > gpio_chip.can_sleep is 0, but current code uses mutex in ioh_gpio_set, > > ioh_gpio_get and ioh_gpio_direction_input functions. > > Thus those functions are not callable from interru

Re: [PATCH RFT 1/2] gpio: gpio-ml-ioh: Use spinlock for register access protection

On Sun, Jul 29, 2012 at 4:54 AM, Axel Lin wrote: > gpio_chip.can_sleep is 0, but current code uses mutex in ioh_gpio_set, > ioh_gpio_get and ioh_gpio_direction_input functions. > Thus those functions are not callable from interrupt context. > This patch converts mutex into spinlock. > > Signed-of

[PATCH RFT 1/2] gpio: gpio-ml-ioh: Use spinlock for register access protection

gpio_chip.can_sleep is 0, but current code uses mutex in ioh_gpio_set, ioh_gpio_get and ioh_gpio_direction_input functions. Thus those functions are not callable from interrupt context. This patch converts mutex into spinlock. Signed-off-by: Axel Lin --- drivers/gpio/gpio-ml-ioh.c | 20 +++