Handle signed error return values returned by simple_write_to_buffer().
In case of an error, return the error code.
Fixes:
3c3d818a9317 ("firmware: arm_scmi: Add core raw transmission support")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Sukrut Bellary <sukrut.bellary@linux.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/20230718085529.258899-1-sukrut.bellary@linux.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
* before sending it with a single RAW xfer.
*/
if (rd->tx_size < rd->tx_req_size) {
- size_t cnt;
+ ssize_t cnt;
cnt = simple_write_to_buffer(rd->tx.buf, rd->tx.len, ppos,
buf, count);
+ if (cnt < 0)
+ return cnt;
+
rd->tx_size += cnt;
if (cnt < count)
return cnt;