[PATCH 3/4] PCI: of: make a flags argument optional
Alex Elder <[email protected]>
| Newsgroups | org.kernel.vger.linux-pci,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
The address of a u32 object is passed to of_pci_get_addr_flags() so it can be filled with the computed flags value. Allow a null pointer to be passed, so that the validity of the resource's flags can be checked without filling in the flags value. Signed-off-by: Alex Elder <[email protected]> --- drivers/pci/of_property.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/pci/of_property.c b/drivers/pci/of_property.c index 22fea1905a080..5e1820b8bb79b 100644 --- a/drivers/pci/of_property.c +++ b/drivers/pci/of_property.c @@ -82,9 +82,11 @@ static int of_pci_get_addr_flags(const struct resource *res, u32 *flags) else return -EINVAL; - *flags = FIELD_PREP(OF_PCI_ADDR_FIELD_SS, ss); - if (res->flags & IORESOURCE_PREFETCH) - *flags |= OF_PCI_ADDR_FIELD_PREFETCH; + if (flags) { + *flags = FIELD_PREP(OF_PCI_ADDR_FIELD_SS, ss); + if (res->flags & IORESOURCE_PREFETCH) + *flags |= OF_PCI_ADDR_FIELD_PREFETCH; + } return 0; } -- 2.53.0