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gpio: generic: use error pointers

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Use the ERRPTR standard way to return an error code in a pointer
thus simplifiying the code.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Heiner Kallweit 2015-09-30 23:52:36 +02:00 committed by Linus Walleij
parent 43960b4731
commit 8d2402605b
1 changed files with 21 additions and 35 deletions
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56
drivers/gpio/gpio-generic.c
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@ -579,34 +579,20 @@ EXPORT_SYMBOL_GPL(bgpio_init);
static void __iomem *bgpio_map(struct platform_device *pdev,
const char *name,
resource_size_t sane_sz,
int *err)
resource_size_t sane_sz)
{
struct resource *r;
resource_size_t sz;
void __iomem *ret;
*err = 0;
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
if (!r) {
*err = -EINVAL;
return NULL;
}
if (!r)
return IOMEM_ERR_PTR(-EINVAL);
sz = resource_size(r);
if (sz != sane_sz) {
*err = -EINVAL;
return NULL;
}
if (sz != sane_sz)
return IOMEM_ERR_PTR(-EINVAL);
ret = devm_ioremap_resource(&pdev->dev, r);
if (IS_ERR(ret)) {
*err = PTR_ERR(ret);
return NULL;
}
return ret;
return devm_ioremap_resource(&pdev->dev, r);
}
static int bgpio_pdev_probe(struct platform_device *pdev)
@ -630,25 +616,25 @@ static int bgpio_pdev_probe(struct platform_device *pdev)
sz = resource_size(r);
dat = bgpio_map(pdev, "dat", sz, &err);
if (err)
return err;
dat = bgpio_map(pdev, "dat", sz);
if (IS_ERR(dat))
return PTR_ERR(dat);
set = bgpio_map(pdev, "set", sz, &err);
if (err)
return err;
set = bgpio_map(pdev, "set", sz);
if (IS_ERR(set))
return PTR_ERR(set);
clr = bgpio_map(pdev, "clr", sz, &err);
if (err)
return err;
clr = bgpio_map(pdev, "clr", sz);
if (IS_ERR(clr))
return PTR_ERR(clr);
dirout = bgpio_map(pdev, "dirout", sz, &err);
if (err)
return err;
dirout = bgpio_map(pdev, "dirout", sz);
if (IS_ERR(dirout))
return PTR_ERR(dirout);
dirin = bgpio_map(pdev, "dirin", sz, &err);
if (err)
return err;
dirin = bgpio_map(pdev, "dirin", sz);
if (IS_ERR(dirin))
return PTR_ERR(dirin);
bgc = devm_kzalloc(&pdev->dev, sizeof(*bgc), GFP_KERNEL);
if (!bgc)