Tiezhu Yang <[email protected]> writes: > When call function devm_platform_ioremap_resource(), we should use IS_ERR() > to check the return value and return PTR_ERR() if failed. > > Fixes: 542c25b7a209 ("drivers: gpio: pxa: use > devm_platform_ioremap_resource()") > Signed-off-by: Tiezhu Yang <[email protected]> > --- > drivers/gpio/gpio-pxa.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c > index 1361270..0cb6600 100644 > --- a/drivers/gpio/gpio-pxa.c > +++ b/drivers/gpio/gpio-pxa.c > @@ -660,8 +660,8 @@ static int pxa_gpio_probe(struct platform_device *pdev) > pchip->irq1 = irq1; > > gpio_reg_base = devm_platform_ioremap_resource(pdev, 0); > - if (!gpio_reg_base) > - return -EINVAL; > + if (IS_ERR(gpio_reg_base)) > + return PTR_ERR(gpio_reg_base); As far as I know, devm_platform_ioremap_resource() could return NULL which is not handled by this test (unless __devm_ioremap() semantics changed since I had a look).
Therefore, this patch is incorrect, or rather incomplete. Cheers. -- Robert
