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gpio: davinci: Fix the number of controllers allocated 

Driver only needs to allocate for [ngpio / 32] controllers,
as each controller handles 32 gpios. But the current driver
allocates for ngpio of which the extra allocated are unused.
Fix it be registering only the required number of controllers.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Lokesh Vutla 2016-01-28 19:08:51 +05:30 committed by Linus Walleij
parent 310a7e6043
commit 6ec9249a83
1 changed files with 3 additions and 2 deletions
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5
drivers/gpio/gpio-davinci.c
View File

@ -195,7 +195,7 @@ static int davinci_gpio_of_xlate(struct gpio_chip *gc,
static int davinci_gpio_probe(struct platform_device *pdev)
{
int i, base;
unsigned ngpio;
unsigned ngpio, nbank;
struct davinci_gpio_controller *chips;
struct davinci_gpio_platform_data *pdata;
struct davinci_gpio_regs __iomem *regs;
@ -224,8 +224,9 @@ static int davinci_gpio_probe(struct platform_device *pdev)
if (WARN_ON(ARCH_NR_GPIOS < ngpio))
ngpio = ARCH_NR_GPIOS;
nbank = DIV_ROUND_UP(ngpio, 32);
chips = devm_kzalloc(dev,
ngpio * sizeof(struct davinci_gpio_controller),
nbank * sizeof(struct davinci_gpio_controller),
GFP_KERNEL);
if (!chips)
return -ENOMEM;