Hi Alexander,
On Fri, Sep 19, 2014 at 12:29:06PM +0400, Alexander Shiyan wrote:
> cond_resched() is not works as expected for clps711x-keypad driver
> and cause runtime error.
> This patch replaces this call with udelay().
>
> Signed-off-by: Alexander Shiyan <shc_work@xxxxxxx>
> ---
> drivers/input/keyboard/clps711x-keypad.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/input/keyboard/clps711x-keypad.c b/drivers/input/keyboard/clps711x-keypad.c
> index 552b65c..650205d 100644
> --- a/drivers/input/keyboard/clps711x-keypad.c
> +++ b/drivers/input/keyboard/clps711x-keypad.c
> @@ -9,13 +9,13 @@
> * (at your option) any later version.
> */
>
> +#include <linux/delay.h>
> #include <linux/input.h>
> #include <linux/input-polldev.h>
> #include <linux/module.h>
> #include <linux/of_gpio.h>
> #include <linux/platform_device.h>
> #include <linux/regmap.h>
> -#include <linux/sched.h>
> #include <linux/input/matrix_keypad.h>
> #include <linux/mfd/syscon.h>
> #include <linux/mfd/syscon/clps711x.h>
> @@ -54,9 +54,9 @@ static void clps711x_keypad_poll(struct input_polled_dev *dev)
>
> /* Read twice for protection against fluctuations */
> do {
> - state = gpiod_get_value_cansleep(data->desc);
> - cond_resched();
> - state1 = gpiod_get_value_cansleep(data->desc);
> + state = gpiod_get_value(data->desc);
> + udelay(5);
> + state1 = gpiod_get_value(data->desc);
Why are you changing gpiod_get_value_cansleep() -> gpiod_get_value().
I am not saying it is incorrect, but could you give reasoning in the
changelog?
Thanks.
--
Dmitry
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