diff options
| author | Tomasz Figa <t.figa@samsung.com> | 2013-05-24 15:55:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-24 16:22:53 -0700 |
| commit | 43c523bff7c3b47506d536c10637be8399dfd85f (patch) | |
| tree | 8d42a0a165fde104013254cfcfcdee74fb612797 | |
| parent | b4ca2b4b577c3530e34dcfaafccb2cc680ce95d1 (diff) | |
| download | lwn-43c523bff7c3b47506d536c10637be8399dfd85f.tar.gz lwn-43c523bff7c3b47506d536c10637be8399dfd85f.zip | |
drivers/rtc/rtc-max8998.c: check for pdata presence before dereferencing
Currently the driver can crash with a NULL pointer dereference if no
pdata is provided, despite of successful registration of the MFD part.
This patch fixes the problem by adding a NULL check before dereferencing
the pdata pointer.
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Sachin Kamat <sachin.kamat@linaro.org>
Reviewed-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/rtc/rtc-max8998.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/rtc/rtc-max8998.c b/drivers/rtc/rtc-max8998.c index 48b6612fae7f..d5af7baa48b5 100644 --- a/drivers/rtc/rtc-max8998.c +++ b/drivers/rtc/rtc-max8998.c @@ -285,7 +285,7 @@ static int max8998_rtc_probe(struct platform_device *pdev) info->irq, ret); dev_info(&pdev->dev, "RTC CHIP NAME: %s\n", pdev->id_entry->name); - if (pdata->rtc_delay) { + if (pdata && pdata->rtc_delay) { info->lp3974_bug_workaround = true; dev_warn(&pdev->dev, "LP3974 with RTC REGERR option." " RTC updates will be extremely slow.\n"); |