[janitor] check copy_from_user return val in e100 net driver

16315ada · William Stinson · Jeff Garzik · 74328596 · 16315ada
Commit 16315ada authored Jun 14, 2002 by William Stinson Committed by Jeff Garzik Jun 14, 2002
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drivers/net/e100/e100_proc.c drivers/net/e100/e100_proc.c +2 -1

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--- a/drivers/net/e100/e100_proc.c
+++ b/drivers/net/e100/e100_proc.c
@@ -257,7 +257,8 @@ write_blink_led_timer(struct file *file, const char *buffer,
 	if (count > WRITE_BUF_MAX_LEN) {
 		count = WRITE_BUF_MAX_LEN;
 	}
-	copy_from_user(s_blink_op, buffer, count);
+	if (copy_from_user(s_blink_op, buffer, count))
+		return -EFAULT;
 	s_blink_op[count] = '\0';
 	i_blink_op = simple_strtoul(s_blink_op, &res, 0);
 	if (res == s_blink_op) {