diff options
| author | Chaitanya Bandi <bandik@nvidia.com> | 2011-11-03 16:13:18 +0530 |
|---|---|---|
| committer | Varun Colbert <vcolbert@nvidia.com> | 2011-11-08 14:10:31 -0800 |
| commit | 091b3906b2dd64cd58221e7e61a24a57dabad16c (patch) | |
| tree | a6fc7687ef5ce593d5c0005738520f7696b86bab /arch | |
| parent | 9afabbf3d72135346b02c9a2cf48e4793fb90d43 (diff) | |
ARM: tegra: gpio: Add range check for gpio enable/disable
Added the range check into tegra_gpio_enable and tegra_gpio_disable
Bug 897387
Reviewed-on: http://git-master/r/62104
(cherry picked from commit e2946c2cb77e3eacacb5169b3ce3f3f30caa87db)
Change-Id: Ic9b745036959b64f1421b031d31f67b987dc2163
Reviewed-on: http://git-master/r/62641
Tested-by: Bandi Krishna Chaitanya <bandik@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-tegra/gpio.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/gpio.c b/arch/arm/mach-tegra/gpio.c index 3ba21ca8e7e0..fecbb36f4b7b 100644 --- a/arch/arm/mach-tegra/gpio.c +++ b/arch/arm/mach-tegra/gpio.c @@ -124,16 +124,28 @@ static void tegra_gpio_mask_write(u32 reg, int gpio, int value) void tegra_gpio_enable(int gpio) { + if (gpio >= TEGRA_NR_GPIOS) { + pr_warn("%s : Invalid gpio ID - %d\n", __func__, gpio); + return; + } tegra_gpio_mask_write(GPIO_MSK_CNF(gpio), gpio, 1); } void tegra_gpio_disable(int gpio) { + if (gpio >= TEGRA_NR_GPIOS) { + pr_warn("%s : Invalid gpio ID - %d\n", __func__, gpio); + return; + } tegra_gpio_mask_write(GPIO_MSK_CNF(gpio), gpio, 0); } void tegra_gpio_init_configure(unsigned gpio, bool is_input, int value) { + if (gpio >= TEGRA_NR_GPIOS) { + pr_warn("%s : Invalid gpio ID - %d\n", __func__, gpio); + return; + } if (is_input) { tegra_gpio_mask_write(GPIO_MSK_OE(gpio), gpio, 0); } else { |