[PATCH v1 1/1] amiserial: Drop duplicate NULL check in shutdown()

[Andy Shevchenko]

The free_page(addr), which becomes free_pages(addr, 0) checks addr
against 0. No need to repeat this check in the caller.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
 drivers/tty/amiserial.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index 1e60dbef676c..533d02b38e02 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -538,10 +538,8 @@ static void shutdown(struct tty_struct *tty, struct serial_state *info)
 	 */
 	free_irq(IRQ_AMIGA_VERTB, info);
 
-	if (info->xmit.buf) {
-		free_page((unsigned long) info->xmit.buf);
-		info->xmit.buf = NULL;
-	}
+	free_page((unsigned long)info->xmit.buf);
+	info->xmit.buf = NULL;
 
 	info->IER = 0;
 	amiga_custom.intena = IF_RBF | IF_TBE;
-- 
2.34.1