linux-kernel - [PATCH v1 1/2] extcon: axp288: Add missed error check

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Date:   Thu, 25 Jul 2019 23:34:04 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     MyungJoo Ham <myungjoo.ham@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        linux-kernel@...r.kernel.org, Hans de Goede <hdegoede@...hat.com>,
        Chen-Yu Tsai <wens@...e.org>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Ramakrishna Pallala <ramakrishna.pallala@...el.com>
Subject: [PATCH v1 1/2] extcon: axp288: Add missed error check

It seems from the very beginning the error check has been missed
in axp288_extcon_log_rsi(). Add it here.

Cc: Ramakrishna Pallala <ramakrishna.pallala@...el.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/extcon/extcon-axp288.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/extcon/extcon-axp288.c b/drivers/extcon/extcon-axp288.c
index 7254852e6ec0..4cbcc3b1aa6b 100644
--- a/drivers/extcon/extcon-axp288.c
+++ b/drivers/extcon/extcon-axp288.c
@@ -135,6 +135,9 @@ static void axp288_extcon_log_rsi(struct axp288_extcon_info *info)
 	int ret;
 
 	ret = regmap_read(info->regmap, AXP288_PS_BOOT_REASON_REG, &val);
+	if (ret < 0)
+		return;
+
 	for (i = 0, rsi = axp288_pwr_up_down_info; *rsi; rsi++, i++) {
 		if (val & BIT(i)) {
 			dev_dbg(info->dev, "%s\n", *rsi);
-- 
2.20.1