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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>
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d591a80e74
commit
1785dbeed4
@ -251,7 +251,6 @@ static void ahci_print_info(struct ahci_probe_ent *probe_ent)
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static int ahci_init_one(pci_dev_t pdev)
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{
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u32 iobase;
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u16 vendor;
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int rc;
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@ -261,9 +260,6 @@ static int ahci_init_one(pci_dev_t pdev)
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memset(probe_ent, 0, sizeof(struct ahci_probe_ent));
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probe_ent->dev = pdev;
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pci_read_config_dword(pdev, AHCI_PCI_BAR, &iobase);
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iobase &= ~0xf;
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probe_ent->host_flags = ATA_FLAG_SATA
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| ATA_FLAG_NO_LEGACY
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| ATA_FLAG_MMIO
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@ -272,7 +268,8 @@ static int ahci_init_one(pci_dev_t pdev)
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probe_ent->pio_mask = 0x1f;
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probe_ent->udma_mask = 0x7f; /*Fixme,assume to support UDMA6 */
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probe_ent->mmio_base = iobase;
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probe_ent->mmio_base = (u32)pci_map_bar(pdev, AHCI_PCI_BAR,
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PCI_REGION_MEM);
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/* Take from kernel:
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* JMicron-specific fixup:
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