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>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/input/keyboard/tegra-kbc.c b/drivers/input/keyboard/tegra-kbc.c
index 0c07e1023a46..edc1385ca00b 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);