[PATCH v3] bus: mhi: core: Return EAGAIN if MHI ring is full

From: Jeffrey Hugo
Date: Wed Feb 17 2021 - 11:28:37 EST


From: Fan Wu <wufan@xxxxxxxxxxxxxx>

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@xxxxxxxxxxxxxx>
Signed-off-by: Jeffrey Hugo <jhugo@xxxxxxxxxxxxxx>
---

v3: Fix subject
v2: Change from EBUSY to EAGAIN

drivers/bus/mhi/core/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bus/mhi/core/main.c b/drivers/bus/mhi/core/main.c
index b63f9e6..1eb2fd3 100644
--- a/drivers/bus/mhi/core/main.c
+++ b/drivers/bus/mhi/core/main.c
@@ -1054,7 +1054,7 @@ 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;
}

--
Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.