JianyuWang0623 commented on code in PR #15641:
URL: https://github.com/apache/nuttx/pull/15641#discussion_r1925192400
##########
drivers/rpmsg/rpmsg_port_uart.c:
##########
@@ -216,7 +216,7 @@ rpmsg_port_uart_send_connect_req(FAR struct
rpmsg_port_uart_s *rpuart)
ssize_t ret = file_write(&rpuart->file, &ch, 1);
if (ret != 1)
{
- rpmsgerr("Send connect request failed, ret=%d\n", ret);
+ rpmsgerr("Send connect request failed, ret=%zu\n", ret);
Review Comment:
I have a question, why not using "%zd" as `file_write()` may return negative
`errno`.
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