From 8a7f102c4b15940e43b712d35da357a2c05ffb84 Mon Sep 17 00:00:00 2001
From: Arvind Yadav <arvind.yadav.cs@gmail.com>
Date: Thu, 31 Aug 2017 11:35:29 -0700
Subject: [PATCH] Input: tegra-kbc - handle return value of clk_prepare_enable
clk_prepare_enable() can fail here and we must check its return value.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/input/keyboard/tegra-kbc.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/input/keyboard/tegra-kbc.c b/drivers/input/keyboard/tegra-kbc.c
index 0c07e1023a469..edc1385ca00bb 100644
--- a/drivers/input/keyboard/tegra-kbc.c
+++ b/drivers/input/keyboard/tegra-kbc.c
@@ -370,8 +370,11 @@ static int tegra_kbc_start(struct tegra_kbc *kbc)
{
unsigned int debounce_cnt;
u32 val = 0;
+ int ret;
- clk_prepare_enable(kbc->clk);
+ ret = clk_prepare_enable(kbc->clk);
+ if (ret)
+ return ret;
/* Reset the KBC controller to clear all previous status.*/
reset_control_assert(kbc->rst);
--
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