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authorArvind Yadav <arvind.yadav.cs@gmail.com>2017-05-23 12:18:57 +0300
committerLinus Walleij <linus.walleij@linaro.org>2017-05-29 11:37:40 +0300
commit6dc0048cff988858254fcc26becfc1e9753efa79 (patch)
tree8449b620b40138a0bdef4aca32e3f498bb296050 /drivers/gpio/gpio-davinci.c
parentf37e335f925968942c6f613fa17c57f625042f87 (diff)
downloadlinux-6dc0048cff988858254fcc26becfc1e9753efa79.tar.xz
gpio: davinci: Handle return value of clk_prepare_enable
clk_prepare_enable() can fail here and we must check its return value. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-davinci.c')
-rw-r--r--drivers/gpio/gpio-davinci.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c
index ac173575d3f6..65cb359308e3 100644
--- a/drivers/gpio/gpio-davinci.c
+++ b/drivers/gpio/gpio-davinci.c
@@ -437,6 +437,7 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
{
unsigned gpio, bank;
int irq;
+ int ret;
struct clk *clk;
u32 binten = 0;
unsigned ngpio, bank_irq;
@@ -480,12 +481,15 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
PTR_ERR(clk));
return PTR_ERR(clk);
}
- clk_prepare_enable(clk);
+ ret = clk_prepare_enable(clk);
+ if (ret)
+ return ret;
if (!pdata->gpio_unbanked) {
irq = devm_irq_alloc_descs(dev, -1, 0, ngpio, 0);
if (irq < 0) {
dev_err(dev, "Couldn't allocate IRQ numbers\n");
+ clk_disable_unprepare(clk);
return irq;
}
@@ -494,6 +498,7 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
chips);
if (!irq_domain) {
dev_err(dev, "Couldn't register an IRQ domain\n");
+ clk_disable_unprepare(clk);
return -ENODEV;
}
}
@@ -562,8 +567,10 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
sizeof(struct
davinci_gpio_irq_data),
GFP_KERNEL);
- if (!irqdata)
+ if (!irqdata) {
+ clk_disable_unprepare(clk);
return -ENOMEM;
+ }
irqdata->regs = g;
irqdata->bank_num = bank;