[PATCH V4 5/5] gpio: gpio-xilinx: Add check if width exceeds 32
From: Srinivas Neeli <hidden>
Date: 2021-01-06 12:28:34
Also in:
linux-arm-kernel, lkml
Subsystem:
gpio subsystem, the rest, xilinx gpio driver · Maintainers:
Linus Walleij, Bartosz Golaszewski, Linus Torvalds, Shubhrajyoti Datta
Add check to see if gpio-width property does not exceed 32. If it exceeds then return -EINVAL. Signed-off-by: Srinivas Neeli <redacted> --- Changes in V4: -New patch. --- drivers/gpio/gpio-xilinx.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c
index e47ae08167f8..ddec718e114c 100644
--- a/drivers/gpio/gpio-xilinx.c
+++ b/drivers/gpio/gpio-xilinx.c@@ -591,6 +591,9 @@ 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))
@@ -615,6 +618,8 @@ 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;
--
2.7.4