| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 138/206] rpmsg: qcom_smd: Correct return value for O_NONBLOCK | Date | Tue, 10 Jan 2017 14:37:01 +0100 |
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4.9-stable review patch. If anyone has any objections, please let me know.
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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; }
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