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gpio: generic: improve error handling in bgpio_map

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If bgpio_map returns NULL then err should always be set.

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 23:50:20 +02:00 committed by Linus Walleij
parent 2db8aba860
commit cf3f2a2c8b
1 changed files with 5 additions and 3 deletions

8
drivers/gpio/gpio-generic.c
View File

@ -591,8 +591,10 @@ static void __iomem *bgpio_map(struct platform_device *pdev,
*err = 0; *err = 0;
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, name); r = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
if (!r) if (!r) {
*err = -EINVAL;
return NULL; return NULL;
}
sz = resource_size(r); sz = resource_size(r);
if (sz != sane_sz) { if (sz != sane_sz) {
@ -637,8 +639,8 @@ static int bgpio_pdev_probe(struct platform_device *pdev)
sz = resource_size(r); sz = resource_size(r);
dat = bgpio_map(pdev, "dat", sz, &err); dat = bgpio_map(pdev, "dat", sz, &err);
if (!dat) if (err)
return err ? err : -EINVAL; return err;
set = bgpio_map(pdev, "set", sz, &err); set = bgpio_map(pdev, "set", sz, &err);
if (err) if (err)