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SubjectRe: [PATCH] gpio: samsung: Fix off-by-one bug in gpio addresses
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Acked-by: Doug Anderson <dianders@chromium.org>

---

On Fri, Jul 20, 2012 at 1:58 PM, Sean Paul <seanpaul@chromium.org> wrote:
>
> Move gpc4 to the end of the automatically processed gpio controllers so
> we don't taint the automatic offset calculation.
>
> This bug caused all controllers coming after gpc4 to map to the
> incorrect address. The result is <&gpd1 0 0 0 0> would actually map to
> GPIO 0 in gpd0.
>
> Signed-off-by: Sean Paul <seanpaul@chromium.org>
> ---
> drivers/gpio/gpio-samsung.c | 14 +++++++-------
> 1 files changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c
> index b6453d0..e4599b4 100644
> --- a/drivers/gpio/gpio-samsung.c
> +++ b/drivers/gpio/gpio-samsung.c
> @@ -2454,12 +2454,6 @@ static struct samsung_gpio_chip exynos5_gpios_1[] = {
> },
> }, {
> .chip = {
> - .base = EXYNOS5_GPC4(0),
> - .ngpio = EXYNOS5_GPIO_C4_NR,
> - .label = "GPC4",
> - },
> - }, {
> - .chip = {
> .base = EXYNOS5_GPD0(0),
> .ngpio = EXYNOS5_GPIO_D0_NR,
> .label = "GPD0",
> @@ -2513,6 +2507,12 @@ static struct samsung_gpio_chip exynos5_gpios_1[] = {
> .label = "GPY6",
> },
> }, {
> + .chip = {
> + .base = EXYNOS5_GPC4(0),
> + .ngpio = EXYNOS5_GPIO_C4_NR,
> + .label = "GPC4",
> + },
> + }, {
> .config = &samsung_gpio_cfgs[9],
> .irq_base = IRQ_EINT(0),
> .chip = {
> @@ -2833,7 +2833,7 @@ static __init void exynos5_gpiolib_init(void)
> }
>
> /* need to set base address for gpc4 */
> - exynos5_gpios_1[11].base = gpio_base1 + 0x2E0;
> + exynos5_gpios_1[20].base = gpio_base1 + 0x2E0;
>
> /* need to set base address for gpx */
> chip = &exynos5_gpios_1[21];
> --
> 1.7.7.3
>


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