Re: [PATCH] davinci:Fix possible NULL pointer deference in the function davinci_gpio_probe

This fixes a possible NULL pointer deference in the function,
davinci_gpio_probe due to the function, gpio2regs being able
to return a NULL pointer if it rans to get the registers for
the gpio devices on a davinci board. Furthermore if this does
arise return -ENXIO to signal callers that this case has arisen
and avoiding setting the regs or other pointer values on the

Signed-off-by: Nicholas Krause <redacted>
---
 drivers/gpio/gpio-davinci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c
index ec58f42..1cc527d 100644
--- a/drivers/gpio/gpio-davinci.c
+++ b/drivers/gpio/gpio-davinci.c

@@ -257,6 +257,8 @@ static int davinci_gpio_probe(struct platform_device *pdev)
                spin_lock_init(&chips[i].lock);

                regs = gpio2regs(base);
+               if (!regs)
+                       return -ENXIO;