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pinctrl: baytrail: Fix potential NULL pointer dereference

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saved-context in byt_gpio_probe is allocated via devm_kcalloc and is
used without checking for NULL in later functions. This patch avoids
such a scenario.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Aditya Pakki 2019-03-12 10:05:52 -05:00 committed by Andy Shevchenko
parent 9e98c678c2
commit d6cb77228e
1 changed files with 2 additions and 0 deletions
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2
drivers/pinctrl/intel/pinctrl-baytrail.c
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@ -1710,6 +1710,8 @@ static int byt_gpio_probe(struct byt_gpio *vg)
#ifdef CONFIG_PM_SLEEP
vg->saved_context = devm_kcalloc(&vg->pdev->dev, gc->ngpio,
sizeof(*vg->saved_context), GFP_KERNEL);
if (!vg->saved_context)
return -ENOMEM;
#endif
ret = devm_gpiochip_add_data(&vg->pdev->dev, gc, vg);
if (ret) {