tegra-uart: Fix redundant expression.

This fix coverity issue : 2886348

Bug 200741055

Change-Id: I92e926400cbb3361bc312660e2193bcbec5265e5
Signed-off-by: Achal Verma <achalv@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2527642
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Dmitry Pervushin <dpervushin@nvidia.com>
Reviewed-by: Rahul Jain (SW-TEGRA) <rahuljain@nvidia.com>
GVS: Gerrit_Virtual_Submit
(cherry picked from commit 49031c7477ae4c4a59ad9e433e6be2839193c4ea)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2574543
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Phoenix Jung <pjung@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/tty/serial/tegra-combined-uart-early.c b/drivers/tty/serial/tegra-combined-uart-early.c
index 57ad4f974..0e7e1fefb 100644
--- a/drivers/tty/serial/tegra-combined-uart-early.c
+++ b/drivers/tty/serial/tegra-combined-uart-early.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2021, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -24,7 +24,7 @@
 
 static u32 update_and_send_mbox(u8 __iomem *addr, u32 mbox_val, char c)
 {
-        int bytes = bytes = (mbox_val >> NUM_BYTES_FIELD_BIT) & 0x3;
+        int bytes = (mbox_val >> NUM_BYTES_FIELD_BIT) & 0x3;
 
         mbox_val |= BIT(INTR_TRIGGER_BIT);
         mbox_val |= c << (bytes * 8);