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| author | Zhouyang Jia <jiazhouyang09@gmail.com> | 2018-06-12 12:40:03 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-26 08:39:41 +0200 |
| commit | 04ea31a181d3db645d4ecb5cc1b8f7bf7e7950cc (patch) | |
| tree | b7ffa3298dd4be0dbe89ddcaa5e6be94a2bbe7bd | |
| parent | 1950f800faa1981d48535322ee68e9131d4ddff4 (diff) | |
| download | linux-stable-04ea31a181d3db645d4ecb5cc1b8f7bf7e7950cc.tar.gz linux-stable-04ea31a181d3db645d4ecb5cc1b8f7bf7e7950cc.tar.bz2 linux-stable-04ea31a181d3db645d4ecb5cc1b8f7bf7e7950cc.zip | |
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 d768f6747961..113493b52149 100644 --- a/drivers/rtc/rtc-bq4802.c +++ b/drivers/rtc/rtc-bq4802.c @@ -162,6 +162,10 @@ 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 { |