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gpio: gpio-xilinx: Add check if width exceeds 32

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Add check to see if gpio-width property does not exceed 32.
If it exceeds then return -EINVAL.

Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Srinivas Neeli 2021-01-29 19:56:50 +05:30 committed by Bartosz Golaszewski
parent 26b0477462
commit 6e551bfa98
1 changed files with 5 additions and 0 deletions
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5
drivers/gpio/gpio-xilinx.c
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@ -589,6 +589,9 @@ static int xgpio_probe(struct platform_device *pdev)
if (of_property_read_u32(np, "xlnx,gpio-width", &chip->gpio_width[0]))
chip->gpio_width[0] = 32;
if (chip->gpio_width[0] > 32)
return -EINVAL;
spin_lock_init(&chip->gpio_lock);
if (of_property_read_u32(np, "xlnx,is-dual", &is_dual))
@ -613,6 +616,8 @@ static int xgpio_probe(struct platform_device *pdev)
&chip->gpio_width[1]))
chip->gpio_width[1] = 32;
if (chip->gpio_width[1] > 32)
return -EINVAL;
}
chip->gc.base = -1;