pci: Disable expansion ROM address decoding when signature check fails
We should not leave the expansion ROM address window open when there
is not a valid ROM.
Suggested-by: Matt Porter <mporter@konsulko.com>
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/pci/pci_rom.c b/drivers/pci/pci_rom.c
index aa06767..a33efae 100644
--- a/drivers/pci/pci_rom.c
+++ b/drivers/pci/pci_rom.c
@@ -104,6 +104,10 @@
if (le16_to_cpu(rom_header->signature) != PCI_ROM_HDR) {
printf("Incorrect expansion ROM header signature %04x\n",
le16_to_cpu(rom_header->signature));
+#ifndef CONFIG_VGA_BIOS_ADDR
+ /* Disable expansion ROM address decoding */
+ pci_write_config_dword(dev, PCI_ROM_ADDRESS, rom_address);
+#endif
return -EINVAL;
}