4.9-stable review patch. If anyone has any objections, please let me know.
------------------ From: Bjorn Andersson <[email protected]> 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 <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- 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; }
