This is a note to let you know that I've just added the patch titled
soundwire: qcom: reinit broadcast completion
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
soundwire-qcom-reinit-broadcast-completion.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c2bb979a57af7c3d4f602c79456dbd71ffd68d7b
Author: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
Date: Wed Oct 26 12:02:05 2022 +0100
soundwire: qcom: reinit broadcast completion
[ Upstream commit f936fa7a954b262cb3908bbc8f01ba19dfaf9fbf ]
For some reason we never reinit the broadcast completion, there is a
danger that broadcast commands could be treated as completed by driver
from previous complete status.
Fix this by reinitializing the completion before sending a broadcast command.
Fixes: ddea6cf7b619 ("soundwire: qcom: update register read/write routine")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221026110210.6575-2-srinivas.kandagatla@xxxxxxxxxx
Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index 1ce6f948e9a4..bbc8a9b1e87a 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -315,6 +315,9 @@ static int qcom_swrm_cmd_fifo_wr_cmd(struct qcom_swrm_ctrl *swrm, u8 cmd_data,
if (swrm_wait_for_wr_fifo_avail(swrm))
return SDW_CMD_FAIL_OTHER;
+ if (cmd_id == SWR_BROADCAST_CMD_ID)
+ reinit_completion(&swrm->broadcast);
+
/* Its assumed that write is okay as we do not get any status back */
swrm->reg_write(swrm, SWRM_CMD_FIFO_WR_CMD, val);
