linux-kernel - [PATCH] clocksource/timer-of: checking for NULL instead of IS

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Message-ID: <20170710072225.eknzwy7yd4duc3yg@mwanda>
Date:   Mon, 10 Jul 2017 10:22:25 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] clocksource/timer-of: checking for NULL instead of IS_ERR()

of_io_request_and_map() doesn't return NULL, it returns error pointers.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/drivers/clocksource/timer-of.c b/drivers/clocksource/timer-of.c
index f6e7491c873c..f83d52e313d2 100644
--- a/drivers/clocksource/timer-of.c
+++ b/drivers/clocksource/timer-of.c
@@ -120,9 +120,9 @@ static __init int timer_base_init(struct device_node *np,
 	const char *name = of_base->name ? of_base->name : np->full_name;
 
 	of_base->base = of_io_request_and_map(np, of_base->index, name);
-	if (!of_base->base) {
+	if (IS_ERR(of_base->base)) {
 		pr_err("Failed to iomap (%s)\n", name);
-		return -ENXIO;
+		return PTR_ERR(of_base->base);
 	}
 
 	return 0;