Messages in this thread Patch in this message | | | From | Guenter Roeck <> | Subject | [PATCH -next] gpio: xilinx: Do not use gpiochip_get_data() in xgpio_save_regs() | Date | Wed, 6 Jan 2016 16:20:10 -0800 |
| |
Commit 097d88e94c44 ("gpio: xilinx: use gpiochip data pointer") replaces the use of container_of() with gpiochip_get_data(). Unfortunately, the data pointer is not yet set by the time xgpio_save_regs() is called, causing a system hang.
Fixes: 097d88e94c44 ("gpio: xilinx: use gpiochip data pointer") Signed-off-by: Guenter Roeck <linux@roeck-us.net> --- It might make sense to merge this patch with the patch introducing the problem.
drivers/gpio/gpio-xilinx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c index 3345ab0ba1b3..d0fbb7f99523 100644 --- a/drivers/gpio/gpio-xilinx.c +++ b/drivers/gpio/gpio-xilinx.c @@ -207,7 +207,8 @@ static int xgpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val) */ static void xgpio_save_regs(struct of_mm_gpio_chip *mm_gc) { - struct xgpio_instance *chip = gpiochip_get_data(&mm_gc->gc); + struct xgpio_instance *chip = + container_of(mm_gc, struct xgpio_instance, mmchip); xgpio_writereg(mm_gc->regs + XGPIO_DATA_OFFSET, chip->gpio_state[0]); xgpio_writereg(mm_gc->regs + XGPIO_TRI_OFFSET, chip->gpio_dir[0]); -- 2.1.4
| |