Messages in this thread Patch in this message | | | From | William Breathitt Gray <> | Subject | [PATCH v2 4/7] gpio: amd8111: Use devm_request_region | Date | Wed, 3 Feb 2016 15:17:13 -0500 |
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By the time request_region is called in the AMD 8111 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> --- drivers/gpio/gpio-amd8111.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/gpio/gpio-amd8111.c b/drivers/gpio/gpio-amd8111.c index c7040ff..30ad7d7 100644 --- a/drivers/gpio/gpio-amd8111.c +++ b/drivers/gpio/gpio-amd8111.c @@ -25,6 +25,7 @@ * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ +#include <linux/ioport.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/gpio.h> @@ -204,7 +205,8 @@ found: gp.pmbase &= 0x0000FF00; if (gp.pmbase == 0) goto out; - if (!request_region(gp.pmbase + PMBASE_OFFSET, PMBASE_SIZE, "AMD GPIO")) { + if (!devm_request_region(&pdev->dev, gp.pmbase + PMBASE_OFFSET, + PMBASE_SIZE, "AMD GPIO")) { dev_err(&pdev->dev, "AMD GPIO region 0x%x already in use!\n", gp.pmbase + PMBASE_OFFSET); err = -EBUSY; @@ -213,7 +215,6 @@ found: gp.pm = ioport_map(gp.pmbase + PMBASE_OFFSET, PMBASE_SIZE); if (!gp.pm) { dev_err(&pdev->dev, "Couldn't map io port into io memory\n"); - release_region(gp.pmbase + PMBASE_OFFSET, PMBASE_SIZE); err = -ENOMEM; goto out; } @@ -228,7 +229,6 @@ found: printk(KERN_ERR "GPIO registering failed (%d)\n", err); ioport_unmap(gp.pm); - release_region(gp.pmbase + PMBASE_OFFSET, PMBASE_SIZE); goto out; } out: @@ -239,7 +239,6 @@ static void __exit amd_gpio_exit(void) { gpiochip_remove(&gp.chip); ioport_unmap(gp.pm); - release_region(gp.pmbase + PMBASE_OFFSET, PMBASE_SIZE); } module_init(amd_gpio_init); -- 2.4.10
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