bus: mhi: core: Return EAGAIN if MHI ring is full

Currently ENOMEM is returned when MHI ring is full. This error code is
very misleading. Change to EAGAIN instead.

Signed-off-by: Fan Wu <wufan@codeaurora.org>
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
Reviewed-by: Hemant Kumar <hemantk@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/1615408803-7016-1-git-send-email-jhugo@codeaurora.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

diff --git a/drivers/bus/mhi/core/main.c b/drivers/bus/mhi/core/main.c
index 3faf8bade52061224f007cd73e01365c87688ff8..d377d07f269e600c2ce53e295d012f180e4a3068 100644 (file)
--- a/drivers/bus/mhi/core/main.c
+++ b/drivers/bus/mhi/core/main.c
@@ -1020,7 +1020,7 @@ static int mhi_queue(struct mhi_device *mhi_dev, struct mhi_buf_info *buf_info,
 
        ret = mhi_is_ring_full(mhi_cntrl, tre_ring);
        if (unlikely(ret)) {
-               ret = -ENOMEM;
+               ret = -EAGAIN;
                goto exit_unlock;
        }