drivers/block/ahci: Fix pci mapping bug
The code assumes that the pci bus address and the virtual
address used to access a region are the same, but they might
not be. Fix this assumption.
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
diff --git a/drivers/block/ahci.c b/drivers/block/ahci.c
index 2445e8c..e1b66fd 100644
--- a/drivers/block/ahci.c
+++ b/drivers/block/ahci.c
@@ -251,7 +251,6 @@
static int ahci_init_one(pci_dev_t pdev)
{
- u32 iobase;
u16 vendor;
int rc;
@@ -261,9 +260,6 @@
memset(probe_ent, 0, sizeof(struct ahci_probe_ent));
probe_ent->dev = pdev;
- pci_read_config_dword(pdev, AHCI_PCI_BAR, &iobase);
- iobase &= ~0xf;
-
probe_ent->host_flags = ATA_FLAG_SATA
| ATA_FLAG_NO_LEGACY
| ATA_FLAG_MMIO
@@ -272,7 +268,8 @@
probe_ent->pio_mask = 0x1f;
probe_ent->udma_mask = 0x7f; /*Fixme,assume to support UDMA6 */
- probe_ent->mmio_base = iobase;
+ probe_ent->mmio_base = (u32)pci_map_bar(pdev, AHCI_PCI_BAR,
+ PCI_REGION_MEM);
/* Take from kernel:
* JMicron-specific fixup: