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 <dan.carpen...@oracle.com>
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;
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