virtio: pci: fix bug of virtio_pci_map_capability

The bar of the structure virtio_pci_cap is the index, and each base
address occupies 4 bytes, so it needs to be multiplied by 4.

This patch fixes a bug reported by Felix Yan
https://lists.denx.de/pipermail/u-boot/2022-August/492779.html

Signed-off-by: Xiang W <wxjstz@126.com>
Tested-by: Felix Yan <felixonmars@archlinux.org>

diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c
index 880a12c..cfde400 100644 (file)
--- a/drivers/virtio/virtio_pci_modern.c
+++ b/drivers/virtio/virtio_pci_modern.c
@@ -466,7 +466,7 @@ static void __iomem *virtio_pci_map_capability(struct udevice *udev,
        unsigned long mask =
                        PCI_REGION_TYPE | PCI_REGION_SYS_MEMORY | PCI_REGION_RO;
        unsigned long flags = PCI_REGION_MEM;
-       u8 *p = dm_pci_map_bar(udev, PCI_BASE_ADDRESS_0 + cap->bar, cap->offset,
+       u8 *p = dm_pci_map_bar(udev, PCI_BASE_ADDRESS_0 + 4 * cap->bar, cap->offset,
                               cap->length, mask, flags);
 
        return (void __iomem *)p;