diff options
| author | Lee Jones <lee.jones@linaro.org> | 2013-01-31 11:06:33 +0000 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2013-02-06 22:38:31 +0100 |
| commit | fa1ec996ac1a42e46ec7dca089252f124c81d7bd (patch) | |
| tree | f426273718c901003868953b3e76137a8e9d493d /drivers | |
| parent | d8a7c1f134edda4ac17a99fffc1159a65a3866a7 (diff) | |
| download | linux-fa1ec996ac1a42e46ec7dca089252f124c81d7bd.tar.bz2 | |
pinctrl/abx500: prevent error path from corrupting returning error
Prior to this patch abx500_gpio_probe() would return the return-value
of gpiochip_remove() during its error patch regardless of what the
actual failure was. So as long as gpiochip_remove() succeeded, probe()
would look like it succeeded too.
This patch ensures the correct error value is returned and that
mutex_destroy() is invoked if gpiochip_add_pin_range() were to fail.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pinctrl/pinctrl-abx500.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/pinctrl/pinctrl-abx500.c b/drivers/pinctrl/pinctrl-abx500.c index 81ef5152714b..9bdfcb97ef57 100644 --- a/drivers/pinctrl/pinctrl-abx500.c +++ b/drivers/pinctrl/pinctrl-abx500.c @@ -1111,7 +1111,7 @@ static int abx500_gpio_probe(struct platform_device *pdev) struct abx500_gpio_platform_data *pdata; struct abx500_pinctrl *pct; const struct platform_device_id *platid = platform_get_device_id(pdev); - int ret; + int ret, err; int i; pdata = abx500_pdata->gpio; @@ -1189,6 +1189,7 @@ static int abx500_gpio_probe(struct platform_device *pdev) if (!pct->pctldev) { dev_err(&pdev->dev, "could not register abx500 pinctrl driver\n"); + ret = -EINVAL; goto out_rem_chip; } dev_info(&pdev->dev, "registered pin controller\n"); @@ -1201,7 +1202,7 @@ static int abx500_gpio_probe(struct platform_device *pdev) dev_name(&pdev->dev), p->offset - 1, p->offset, p->npins); if (ret < 0) - return ret; + goto out_rem_chip; } platform_set_drvdata(pdev, pct); @@ -1210,8 +1211,8 @@ static int abx500_gpio_probe(struct platform_device *pdev) return 0; out_rem_chip: - ret = gpiochip_remove(&pct->chip); - if (ret) + err = gpiochip_remove(&pct->chip); + if (err) dev_info(&pdev->dev, "failed to remove gpiochip\n"); out_rem_irq: abx500_gpio_irq_remove(pct); |