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gpio: Fix null pointer dereference while accessing rdc321x platform_data

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rdc321x-gpio currently fetches its driver specific data by using the
platform_device->platform_data pointer, this is wrong because the mfd
device which registers our platform_device has been added using
mfd_add_device() which sets the platform_device->driver_data pointer
instead.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
CC: stable@kernel.org
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Florian Fainelli 2010-11-26 10:39:54 +01:00 committed by Samuel Ortiz
parent 90a8a73c06
commit fa6469cb5b
1 changed files with 1 additions and 1 deletions
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2
drivers/gpio/rdc321x-gpio.c
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@ -135,7 +135,7 @@ static int __devinit rdc321x_gpio_probe(struct platform_device *pdev)
struct rdc321x_gpio *rdc321x_gpio_dev; struct rdc321x_gpio *rdc321x_gpio_dev;
struct rdc321x_gpio_pdata *pdata; struct rdc321x_gpio_pdata *pdata;
pdata = pdev->dev.platform_data; pdata = platform_get_drvdata(pdev);
if (!pdata) { if (!pdata) {
dev_err(&pdev->dev, "no platform data supplied\n"); dev_err(&pdev->dev, "no platform data supplied\n");
return -ENODEV; return -ENODEV;