Patch "rpmsg: qcom_smd: Correct return value for O_NONBLOCK" has been added to the 4.9-stable tree

Patch "rpmsg: qcom_smd: Correct return value for O_NONBLOCK" has been added to the 4.9-stable tree

[gregkh]

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

    rpmsg: qcom_smd: Correct return value for O_NONBLOCK

to the 4.9-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-qcom_smd-correct-return-value-for-o_nonblock.patch
and it can be found in the queue-4.9 subdirectory.

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


>From 1d74e7ed5dc1903ac081574a9b6aa94e7ba4ad45 Mon Sep 17 00:00:00 2001
From: Bjorn Andersson <bjorn.andersson@linaro.org>
Date: Thu, 1 Dec 2016 16:59:55 -0800
Subject: rpmsg: qcom_smd: Correct return value for O_NONBLOCK

From: Bjorn Andersson <bjorn.andersson@linaro.org>

commit 1d74e7ed5dc1903ac081574a9b6aa94e7ba4ad45 upstream.

qcom_smd_send() should return -EAGAIN for non-blocking channels with
insufficient space, so that we can propagate this event to user space.

Fixes: 53e2822e56c7 ("rpmsg: Introduce Qualcomm SMD backend")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/rpmsg/qcom_smd.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/rpmsg/qcom_smd.c
+++ b/drivers/rpmsg/qcom_smd.c
@@ -739,7 +739,7 @@ static int __qcom_smd_send(struct qcom_s
 
 	while (qcom_smd_get_tx_avail(channel) < tlen) {
 		if (!wait) {
-			ret = -ENOMEM;
+			ret = -EAGAIN;
 			goto out;
 		}
 


Patches currently in stable-queue which might be from bjorn.andersson@linaro.org are

queue-4.9/rpmsg-qcom_smd-correct-return-value-for-o_nonblock.patch