diff options
| author | William Breathitt Gray <vilhelm.gray@gmail.com> | 2016-02-03 15:17:40 -0500 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-02-16 00:19:53 +0100 |
| commit | 134414578518f095b65185535bc696277b5c57c6 (patch) | |
| tree | dfdda5368e6be010c823d025d12faa693a197d8d /drivers/gpio/gpio-sch311x.c | |
| parent | 8a06b08ec30723fe0064d3e7bbd1231977d9ea73 (diff) | |
| download | linux-134414578518f095b65185535bc696277b5c57c6.tar.gz linux-134414578518f095b65185535bc696277b5c57c6.tar.bz2 linux-134414578518f095b65185535bc696277b5c57c6.zip | |
gpio: sch311x: Use devm_request_region
By the time request_region is called in the SMSC SCH311x GPIO driver, a
corresponding device structure has already been allocated. The
devm_request_region function should be used to help simplify the cleanup
code and reduce the possible points of failure.
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-sch311x.c')
| -rw-r--r-- | drivers/gpio/gpio-sch311x.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/gpio/gpio-sch311x.c b/drivers/gpio/gpio-sch311x.c index 1cbd77a04e7b..a03b38ee2e02 100644 --- a/drivers/gpio/gpio-sch311x.c +++ b/drivers/gpio/gpio-sch311x.c @@ -12,6 +12,7 @@ * (at your option) any later version. */ +#include <linux/ioport.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> @@ -228,7 +229,8 @@ static int sch311x_gpio_probe(struct platform_device *pdev) int err, i; /* we can register all GPIO data registers at once */ - if (!request_region(pdata->runtime_reg + GP1, 6, DRV_NAME)) { + if (!devm_request_region(&pdev->dev, pdata->runtime_reg + GP1, 6, + DRV_NAME)) { dev_err(&pdev->dev, "Failed to request region 0x%04x-0x%04x.\n", pdata->runtime_reg + GP1, pdata->runtime_reg + GP1 + 5); return -EBUSY; @@ -273,7 +275,6 @@ static int sch311x_gpio_probe(struct platform_device *pdev) return 0; exit_err: - release_region(pdata->runtime_reg + GP1, 6); /* release already registered chips */ for (--i; i >= 0; i--) gpiochip_remove(&priv->blocks[i].chip); @@ -282,12 +283,9 @@ exit_err: static int sch311x_gpio_remove(struct platform_device *pdev) { - struct sch311x_pdev_data *pdata = dev_get_platdata(&pdev->dev); struct sch311x_gpio_priv *priv = platform_get_drvdata(pdev); int i; - release_region(pdata->runtime_reg + GP1, 6); - for (i = 0; i < ARRAY_SIZE(priv->blocks); i++) { gpiochip_remove(&priv->blocks[i].chip); dev_info(&pdev->dev, |