tty: tty_io.c shadows sparse fix

drivers/char/tty_io.c:1413:17: warning: symbol 'buf' shadows an earlier one
drivers/char/tty_io.c:1379:20: originally declared here

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index 502cad6..7053d63 100644 (file)
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1026,19 +1026,19 @@ static inline ssize_t do_tty_write(
 
        /* write_buf/write_cnt is protected by the atomic_write_lock mutex */
        if (tty->write_cnt < chunk) {
-               unsigned char *buf;
+               unsigned char *buf_chunk;
 
                if (chunk < 1024)
                        chunk = 1024;
 
-               buf = kmalloc(chunk, GFP_KERNEL);
-               if (!buf) {
+               buf_chunk = kmalloc(chunk, GFP_KERNEL);
+               if (!buf_chunk) {
                        ret = -ENOMEM;
                        goto out;
                }
                kfree(tty->write_buf);
                tty->write_cnt = chunk;
-               tty->write_buf = buf;
+               tty->write_buf = buf_chunk;
        }
 
        /* Do the write .. */