diff options
| author | Zhouyang Jia <jiazhouyang09@gmail.com> | 2018-06-12 12:40:03 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-26 08:33:58 +0200 |
| commit | 4a8fd0459d2c910b4d086e52990c8989bcbf5147 (patch) | |
| tree | 2ec2b15392f8dbea225c562abe598948969a62c6 | |
| parent | 4d50d942bdd8bb750ce01fae8cf875431a4d479f (diff) | |
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>
| -rw-r--r-- | drivers/rtc/rtc-bq4802.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-bq4802.c b/drivers/rtc/rtc-bq4802.c index fc0ff87aa5df..f53198207e93 100644 --- a/drivers/rtc/rtc-bq4802.c +++ b/drivers/rtc/rtc-bq4802.c @@ -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 { |