Currently the driver can crash with a NULL pointer dereference if no pdata is provided, despite of successful registration of MFD part. This patch fixes the problem by adding a NULL check before dereferencing the pdata pointer.
Signed-off-by: Tomasz Figa <[email protected]> Signed-off-by: Kyungmin Park <[email protected]> --- drivers/rtc/rtc-max8998.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-max8998.c b/drivers/rtc/rtc-max8998.c index 48b6612..d5af7ba 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"); -- 1.8.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
