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path: root/drivers/pci/rom.c
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Diffstat (limited to 'drivers/pci/rom.c')
-rw-r--r--drivers/pci/rom.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c
index 132a78159b6..36864a935d6 100644
--- a/drivers/pci/rom.c
+++ b/drivers/pci/rom.c
@@ -55,6 +55,7 @@ void pci_disable_rom(struct pci_dev *pdev)
/**
* pci_get_rom_size - obtain the actual size of the ROM image
+ * @pdev: target PCI device
* @rom: kernel virtual pointer to image of ROM
* @size: size of PCI window
* return: size of actual ROM image
@@ -63,7 +64,7 @@ void pci_disable_rom(struct pci_dev *pdev)
* The PCI window size could be much larger than the
* actual image size.
*/
-size_t pci_get_rom_size(void __iomem *rom, size_t size)
+size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size)
{
void __iomem *image;
int last_image;
@@ -72,8 +73,10 @@ size_t pci_get_rom_size(void __iomem *rom, size_t size)
do {
void __iomem *pds;
/* Standard PCI ROMs start out with these bytes 55 AA */
- if (readb(image) != 0x55)
+ if (readb(image) != 0x55) {
+ dev_err(&pdev->dev, "Invalid ROM contents\n");
break;
+ }
if (readb(image + 1) != 0xAA)
break;
/* get the PCI data structure and check its signature */
@@ -159,7 +162,7 @@ void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size)
* size is much larger than the actual size of the ROM.
* True size is important if the ROM is going to be copied.
*/
- *size = pci_get_rom_size(rom, *size);
+ *size = pci_get_rom_size(pdev, rom, *size);
return rom;
}