As priv->audio_params can now be changed at run time, we need to be more
careful about how we deal with a mode set. We must take the audio lock
while checking if there's a valid audio configuration.
However, it's slightly worse than that - during mode set, we mute the
audio, and it must not be unmuted until we have finished the mode set.
It is possible that the audio side may start while a mode set is in
progress, so take the audio_mutex lock around the whole mode setting
procedure.
Signed-off-by: Russell King <rmk+kernel at armlinux.org.uk>
---
drivers/gpu/drm/i2c/tda998x_drv.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c
b/drivers/gpu/drm/i2c/tda998x_drv.c
index 9798d400d817..d72bc30a3bce 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -1074,13 +1074,12 @@ tda998x_encoder_mode_set(struct drm_encoder *encoder,
tda998x_write_avi(priv, adjusted_mode);
- if (priv->audio_params.format != AFMT_UNUSED) {
- mutex_lock(&priv->audio_mutex);
+ mutex_lock(&priv->audio_mutex);
+ if (priv->audio_params.format != AFMT_UNUSED)
tda998x_configure_audio(priv,
&priv->audio_params,
adjusted_mode->clock);
- mutex_unlock(&priv->audio_mutex);
- }
+ mutex_unlock(&priv->audio_mutex);
}
}
--
2.1.0
