[PATCH v2 06/20] rpmsg: glink: Return -EAGAIN when there is no FIFO space
From: Sricharan R <hidden>
Date: 2017-08-24 07:22:18
Also in:
linux-arm-msm, linux-remoteproc, lkml
Subsystem:
arm/qualcomm mailing list, remote processor messaging (rpmsg) subsystem, the rest · Maintainers:
Bjorn Andersson, Mathieu Poirier, Linus Torvalds
The TX FIFO can be full, if the remote client has not read enough data (or) reading it slowly. So its nessecary to return -EAGAIN to the local client to enable retry. Signed-off-by: Sricharan R <redacted> --- drivers/rpmsg/qcom_glink_native.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index a6394cd..94b79e8 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c@@ -233,7 +233,7 @@ static int qcom_glink_tx(struct qcom_glink *glink, while (qcom_glink_tx_avail(glink) < tlen) { if (!wait) { - ret = -ENOMEM; + ret = -EAGAIN; goto out; }
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