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Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_bios.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_bios.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c
index 637afe71de5..80963d05b54 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bios.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c
@@ -177,14 +177,15 @@ bios_shadow_pci(struct nvbios *bios)
if (!pci_enable_rom(pdev)) {
void __iomem *rom = pci_map_rom(pdev, &length);
- if (rom) {
+ if (rom && length) {
bios->data = kmalloc(length, GFP_KERNEL);
if (bios->data) {
memcpy_fromio(bios->data, rom, length);
bios->length = length;
}
- pci_unmap_rom(pdev, rom);
}
+ if (rom)
+ pci_unmap_rom(pdev, rom);
pci_disable_rom(pdev);
}