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authorArnaud Pouliquen <arnaud.pouliquen@st.com>2020-01-13 11:04:00 +0100
committerMark Brown <broonie@kernel.org>2020-01-13 15:12:26 +0000
commitce780a47c3c01e1e179d0792df6b853a913928f1 (patch)
tree94c79a6459e8c06c1ae14e15ab024d12f235d28e /sound
parente0beec88397b163c7c4ea6fcfb67e8e07a2671dc (diff)
ASoC: sti: fix possible sleep-in-atomic
Change mutex and spinlock management to avoid sleep in atomic issue. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Link: https://lore.kernel.org/r/20200113100400.30472-1-arnaud.pouliquen@st.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/sti/uniperif_player.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/sound/soc/sti/uniperif_player.c b/sound/soc/sti/uniperif_player.c
index 48ea915b24ba..2ed92c990b97 100644
--- a/sound/soc/sti/uniperif_player.c
+++ b/sound/soc/sti/uniperif_player.c
@@ -226,7 +226,6 @@ static void uni_player_set_channel_status(struct uniperif *player,
* sampling frequency. If no sample rate is already specified, then
* set one.
*/
- mutex_lock(&player->ctrl_lock);
if (runtime) {
switch (runtime->rate) {
case 22050:
@@ -303,7 +302,6 @@ static void uni_player_set_channel_status(struct uniperif *player,
player->stream_settings.iec958.status[3 + (n * 4)] << 24;
SET_UNIPERIF_CHANNEL_STA_REGN(player, n, status);
}
- mutex_unlock(&player->ctrl_lock);
/* Update the channel status */
if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0)
@@ -365,8 +363,10 @@ static int uni_player_prepare_iec958(struct uniperif *player,
SET_UNIPERIF_CTRL_ZERO_STUFF_HW(player);
+ mutex_lock(&player->ctrl_lock);
/* Update the channel status */
uni_player_set_channel_status(player, runtime);
+ mutex_unlock(&player->ctrl_lock);
/* Clear the user validity user bits */
SET_UNIPERIF_USER_VALIDITY_VALIDITY_LR(player, 0);
@@ -598,7 +598,6 @@ static int uni_player_ctl_iec958_put(struct snd_kcontrol *kcontrol,
iec958->status[1] = ucontrol->value.iec958.status[1];
iec958->status[2] = ucontrol->value.iec958.status[2];
iec958->status[3] = ucontrol->value.iec958.status[3];
- mutex_unlock(&player->ctrl_lock);
spin_lock_irqsave(&player->irq_lock, flags);
if (player->substream && player->substream->runtime)
@@ -608,6 +607,8 @@ static int uni_player_ctl_iec958_put(struct snd_kcontrol *kcontrol,
uni_player_set_channel_status(player, NULL);
spin_unlock_irqrestore(&player->irq_lock, flags);
+ mutex_unlock(&player->ctrl_lock);
+
return 0;
}