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

2012-08-14 Thread Linus Walleij
On Sun, Jul 29, 2012 at 4:55 AM, Axel Lin wrote: > gpio_chip.can_sleep is 0, but current code uses mutex in pch_gpio_set > pch_gpio_get and pch_gpio_direction_input functions. > Thus those functions are not callable from interrupt context. > This patch converts mutex into spinlock. > >

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

2012-08-14 Thread Linus Walleij
On Sun, Jul 29, 2012 at 4:55 AM, Axel Lin axel@gmail.com wrote: gpio_chip.can_sleep is 0, but current code uses mutex in pch_gpio_set pch_gpio_get and pch_gpio_direction_input functions. Thus those functions are not callable from interrupt context. This patch converts mutex into spinlock.

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

2012-08-13 Thread Linus Walleij
On Sun, Jul 29, 2012 at 4:55 AM, Axel Lin wrote: > gpio_chip.can_sleep is 0, but current code uses mutex in pch_gpio_set > pch_gpio_get and pch_gpio_direction_input functions. > Thus those functions are not callable from interrupt context. > This patch converts mutex into spinlock. > >

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

2012-08-13 Thread Linus Walleij
On Sun, Jul 29, 2012 at 4:55 AM, Axel Lin axel@gmail.com wrote: gpio_chip.can_sleep is 0, but current code uses mutex in pch_gpio_set pch_gpio_get and pch_gpio_direction_input functions. Thus those functions are not callable from interrupt context. This patch converts mutex into spinlock.

[PATCH RFT 2/2] gpio: gpio-pch: Use spinlock for register access protection

2012-07-28 Thread Axel Lin
gpio_chip.can_sleep is 0, but current code uses mutex in pch_gpio_set pch_gpio_get and pch_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-pch.c | 22

[PATCH RFT 2/2] gpio: gpio-pch: Use spinlock for register access protection

2012-07-28 Thread Axel Lin
gpio_chip.can_sleep is 0, but current code uses mutex in pch_gpio_set pch_gpio_get and pch_gpio_direction_input functions. Thus those functions are not callable from interrupt context. This patch converts mutex into spinlock. Signed-off-by: Axel Lin axel@gmail.com --- drivers/gpio/gpio-pch.c