From: Arvind Yadav <arvind.yadav.cs@gmail.com>
Date: Thu, 31 Aug 2017 18:35:29 +0000 (-0700)
Subject: Input: tegra-kbc - handle return value of clk_prepare_enable
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8a7f102c4b15940e43b712d35da357a2c05ffb84;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

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>
---

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);