| commit | 02a6794d57ce54b96b13db80831f35d66e0caf31 | |
| author | Axel Lin <axel.lin@gmail.com> | |
| Sun, 29 Jul 2012 02:54:42 +0000 (29 10:54 +0800) | ||
| committer | Linus Walleij <linus.walleij@linaro.org> | |
| Fri, 17 Aug 2012 05:35:42 +0000 (17 07:35 +0200) | ||
| tree | a395f2a69060931c3d6e3c4c43a38f5c45baa431 | treesnapshot (tar.gz zip) |
| parent | f9c4a31f61501d25f0a45faae6a5cd701ad5694a | commitdiff |
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 <axel.lin@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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 <axel.lin@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| drivers/gpio/gpio-ml-ioh.c | diffblobblamehistory |