From: Pan Bian <bianpan2016@163.com>
To: Andrew Lunn <andrew@lunn.ch>,
Vivien Didelot <vivien.didelot@savoirfairelinux.com>,
Florian Fainelli <f.fainelli@gmail.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
stable@vger.kernel.org, Pan Bian <bianpan2016@163.com>
Subject: [PATCH] net: dsa: lan9303: correctly check return value of devm_gpiod_get_optional
Date: Sun, 12 Nov 2017 23:38:09 +0800 [thread overview]
Message-ID: <1510501089-9451-1-git-send-email-bianpan2016@163.com> (raw)
Function devm_gpiod_get_optional() returns an ERR_PTR on failure. Its
return value should not be validated by a NULL check. Instead, use IS_ERR.
Signed-off-by: Pan Bian <bianpan2016@163.com>
---
drivers/net/dsa/lan9303-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
index b471413..6d3fc8f 100644
--- a/drivers/net/dsa/lan9303-core.c
+++ b/drivers/net/dsa/lan9303-core.c
@@ -828,7 +828,7 @@ static void lan9303_probe_reset_gpio(struct lan9303 *chip,
chip->reset_gpio = devm_gpiod_get_optional(chip->dev, "reset",
GPIOD_OUT_LOW);
- if (!chip->reset_gpio) {
+ if (IS_ERR(chip->reset_gpio)) {
dev_dbg(chip->dev, "No reset GPIO defined\n");
return;
}
--
1.9.1
next reply other threads:[~2017-11-12 15:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-12 15:38 Pan Bian [this message]
2017-11-12 18:29 ` Andrew Lunn
2017-11-13 4:08 ` Phil Reid
2017-11-13 4:38 ` Andrew Lunn
2017-11-14 12:35 ` David Miller
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