[patch] tty: hvc_console: silence unintialized variable warning
From: Dan Carpenter <hidden>
Date: 2016-04-13 06:45:09
Also in:
kernel-janitors, lkml
Subsystem:
hypervisor virtual console driver, the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
If ->get_char() returns a negative error code and that can mean that "ch" is uninitialized. The callers of this function expect NO_POLL_CHAR on error so let's return that. Signed-off-by: Dan Carpenter <redacted>
diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
index e46d628..325747a 100644
--- a/drivers/tty/hvc/hvc_console.c
+++ b/drivers/tty/hvc/hvc_console.c@@ -814,7 +814,7 @@ static int hvc_poll_get_char(struct tty_driver *driver, int line) n = hp->ops->get_chars(hp->vtermno, &ch, 1); - if (n == 0) + if (n <= 0) return NO_POLL_CHAR; return ch;