Merge drm/drm-next into drm-misc-next

Backmerging from drm/drm-next for v5.16-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 2c6b155002a2..93772ab8d7e3 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -558,6 +558,15 @@ int pwm_apply_state(struct pwm_device *pwm, const struct pwm_state *state)
 	struct pwm_chip *chip;
 	int err;
 
+	/*
+	 * Some lowlevel driver's implementations of .apply() make use of
+	 * mutexes, also with some drivers only returning when the new
+	 * configuration is active calling pwm_apply_state() from atomic context
+	 * is a bad idea. So make it explicit that calling this function might
+	 * sleep.
+	 */
+	might_sleep();
+
 	if (!pwm || !state || !state->period ||
 	    state->duty_cycle > state->period)
 		return -EINVAL;