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>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index 502cad68f83c..7053d6333692 100644
--- 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 .. */