From: Tiezhu Yang <yangtiezhu@loongson.cn>
Date: Mon, 25 May 2020 01:39:48 +0000 (+0800)
Subject: rtc: mpc5121: Use correct return value for mpc5121_rtc_probe()
X-Git-Tag: v5.8-rc1~100^2~5
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=710e4a82d6f09ce75eb73e6adb8caf2b0d6cf4c6;p=thirdparty%2Flinux.git

rtc: mpc5121: Use correct return value for mpc5121_rtc_probe()

When call function devm_platform_ioremap_resource(), we should use IS_ERR()
to check the return value and return PTR_ERR() if failed.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/1590370788-15136-2-git-send-email-yangtiezhu@loongson.cn
---

diff --git a/drivers/rtc/rtc-mpc5121.c b/drivers/rtc/rtc-mpc5121.c
index 3040844129cee..5c2ce71aa044d 100644
--- a/drivers/rtc/rtc-mpc5121.c
+++ b/drivers/rtc/rtc-mpc5121.c
@@ -316,7 +316,7 @@ static int mpc5121_rtc_probe(struct platform_device *op)
 	rtc->regs = devm_platform_ioremap_resource(op, 0);
 	if (IS_ERR(rtc->regs)) {
 		dev_err(&op->dev, "%s: couldn't map io space\n", __func__);
-		return -ENOSYS;
+		return PTR_ERR(rtc->regs);
 	}
 
 	device_init_wakeup(&op->dev, 1);