Commit 4a8fd045 authored Jun 12, 2018 by Zhouyang Jia Committed by Greg Kroah-Hartman Sep 26, 2018

rtc: bq4802: add error handling for devm_ioremap



[ Upstream commit 7874b919866ba91bac253fa219d3d4c82bb944df ]

When devm_ioremap fails, the lack of error-handling code may
cause unexpected results.

This patch adds error-handling code after calling devm_ioremap.

Signed-off-by: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 4d50d942

drivers/rtc/rtc-bq4802.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -164,6 +164,10 @@ static int bq4802_probe(struct platform_device *pdev)
		} else if (p->r->flags & IORESOURCE_MEM) {
		p->regs = devm_ioremap(&pdev->dev, p->r->start,
		resource_size(p->r));
		if (!p->regs){
		err = -ENOMEM;
		goto out;
		}
		p->read = bq4802_read_mem;
		p->write = bq4802_write_mem;
		} else {