Patch "rpmsg: glink: Propagate TX failures in intentless mode as well" has been added to the 6.3-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    rpmsg: glink: Propagate TX failures in intentless mode as well

to the 6.3-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:
     rpmsg-glink-propagate-tx-failures-in-intentless-mode.patch
and it can be found in the queue-6.3 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 2ca606d401bb1eb63b2d575062a519cd4a26b776
Author: Bjorn Andersson <quic_bjorande@xxxxxxxxxxx>
Date:   Tue Apr 18 09:30:17 2023 -0700

    rpmsg: glink: Propagate TX failures in intentless mode as well
    
    [ Upstream commit 7a68f9fa97357a0f2073c9c31ed4101da4fce93e ]
    
    As support for splitting transmission over several messages using
    TX_DATA_CONT was introduced it does not immediately return the return
    value of qcom_glink_tx().
    
    The result is that in the intentless case (i.e. intent == NULL), the
    code will continue to send all additional chunks. This is wasteful, and
    it's possible that the send operation could incorrectly indicate
    success, if the last chunk fits in the TX fifo.
    
    Fix the condition.
    
    Fixes: 8956927faed3 ("rpmsg: glink: Add TX_DATA_CONT command while sending")
    Reviewed-by: Chris Lew <quic_clew@xxxxxxxxxxx>
    Signed-off-by: Bjorn Andersson <quic_bjorande@xxxxxxxxxxx>
    Signed-off-by: Bjorn Andersson <andersson@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20230418163018.785524-2-quic_bjorande@xxxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index 01d2805fe30f5..62634d020d139 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -1356,8 +1356,9 @@ static int __qcom_glink_send(struct glink_channel *channel,
 	ret = qcom_glink_tx(glink, &req, sizeof(req), data, chunk_size, wait);
 
 	/* Mark intent available if we failed */
-	if (ret && intent) {
-		intent->in_use = false;
+	if (ret) {
+		if (intent)
+			intent->in_use = false;
 		return ret;
 	}
 
@@ -1378,8 +1379,9 @@ static int __qcom_glink_send(struct glink_channel *channel,
 				    chunk_size, wait);
 
 		/* Mark intent available if we failed */
-		if (ret && intent) {
-			intent->in_use = false;
+		if (ret) {
+			if (intent)
+				intent->in_use = false;
 			break;
 		}
 	}