When the function return NULL,add a warning message
Signed-off-by: Ren Yu <renyu@xxxxxxxxxxxx>
---
drivers/pci/quirks.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index da829274fc66..fdf3d7394c79 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -584,8 +584,12 @@ static void quirk_ati_exploding_mce(struct pci_dev *dev)
{
pci_info(dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n");
/* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */
- request_region(0x3b0, 0x0C, "RadeonIGP");
- request_region(0x3d3, 0x01, "RadeonIGP");
+ if (!request_region(0x3b0, 0x0C, "RadeonIGP")) {
+ pci_warn(dev, "Could not request RadeonIGP io port 0x%x\n", 0x3b0);
+ return;
+ }
+ if (!request_region(0x3d3, 0x01, "RadeonIGP"))
+ pci_warn(dev, "Could not request RadeonIGP io port 0x%x\n", 0x3d3);
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce);
--
2.25.1
