diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-19 13:19:07 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-19 13:19:07 -0700 |
| commit | 5584cfbafc1a4c2a465f4423d351bb918c64cad0 (patch) | |
| tree | f74dcc1ba5a6790cb3e69629696aff58bdfd827a /drivers/gpio/gpiolib.c | |
| parent | 1653d2f88f43f6780eace1faeeb7b7adde8c10fb (diff) | |
| parent | 31d141e3a666269a3b6fcccddb0351caf7454240 (diff) | |
Merge 3.12-rc6 into usb-next.
We want those USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpio/gpiolib.c')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 86ef3461ec0..0dee0e0c247 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -136,7 +136,7 @@ static struct gpio_desc *gpio_to_desc(unsigned gpio) */ static int desc_to_gpio(const struct gpio_desc *desc) { - return desc->chip->base + gpio_chip_hwgpio(desc); + return desc - &gpio_desc[0]; } @@ -1398,7 +1398,7 @@ static int gpiod_request(struct gpio_desc *desc, const char *label) int status = -EPROBE_DEFER; unsigned long flags; - if (!desc || !desc->chip) { + if (!desc) { pr_warn("%s: invalid GPIO\n", __func__); return -EINVAL; } @@ -1406,6 +1406,8 @@ static int gpiod_request(struct gpio_desc *desc, const char *label) spin_lock_irqsave(&gpio_lock, flags); chip = desc->chip; + if (chip == NULL) + goto done; if (!try_module_get(chip->owner)) goto done; |