Hi Jaew9on,
On Mon, Feb 23, 2015 at 05:09:50PM +0900, Jaewon Kim wrote:
> This patch adds support for haptic driver on max77843
> MFD(Multi Function Device) with PMIC, MUIC, LED, CHARGER.
>
> This driver supports external pwm and LRA(Linear Resonant Actuator) motor.
> And it supports ff-memless interface from inpu framework.
>
> Cc: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> Signed-off-by: Jaewon Kim <jaewon02.kim@xxxxxxxxxxx>
...
> +static void max77843_haptic_play_work(struct work_struct *work)
> +{
> + struct max77843_haptic *haptic =
> + container_of(work, struct max77843_haptic, work);
> + int error;
> +
> + mutex_lock(&haptic->mutex);
> +
> + if (haptic->suspended)
> + mutex_unlock(&haptic->mutex);
Huh?
> +
> + error = max77843_haptic_set_duty_cycle(haptic);
> + if (error) {
> + dev_err(haptic->dev, "failed to set duty cycle: %d\n", error);
> + return;
Here you are leaving with the mutex held.
> + }
> +
> + if (haptic->magnitude) {
> + error = max77843_haptic_enable(haptic);
> + if (error)
> + dev_err(haptic->dev,
> + "cannot enable haptic: %d\n", error);
> + } else {
> + max77843_haptic_disable(haptic);
> + if (error)
> + dev_err(haptic->dev,
> + "cannot disable haptic: %d\n", error);
> + }
> +
> + mutex_unlock(&haptic->mutex);
> +}
> +
The rest seems quite reasonable.
Thanks.
--
Dmitry
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