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authorroot <root@hraefn.swansea.linux.org.uk>2006-07-05 22:58:20 -0400
committerJeff Garzik <jeff@garzik.org>2006-07-05 22:58:20 -0400
commit9545b5781cfa822ea1528bc65965dbace0c39a5d (patch)
tree0bcac2ee9005fda9cf25003c8da00c99d322c25a /drivers/scsi/ahci.c
parent5afc81427f79193ed55edd7184ba2b6ce119a649 (diff)
[PATCH] ahci: Ensure that we don't grab both functions
When we force the chip into dual fn mode so we get PATA and AHCI we must be sure we don't then do anything dumb like try and grab both with the AHCI driver. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/scsi/ahci.c')
-rw-r--r--drivers/scsi/ahci.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index 7447ba0374e8..77e7202a0eba 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -1323,6 +1323,17 @@ static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1323 if (!printed_version++) 1323 if (!printed_version++)
1324 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); 1324 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1325 1325
1326 /* JMicron-specific fixup: make sure we're in AHCI mode */
1327 /* This is protected from races with ata_jmicron by the pci probe
1328 locking */
1329 if (pdev->vendor == PCI_VENDOR_ID_JMICRON) {
1330 /* AHCI enable, AHCI on function 0 */
1331 pci_write_config_byte(pdev, 0x41, 0xa1);
1332 /* Function 1 is the PATA controller */
1333 if (PCI_FUNC(pdev->devfn))
1334 return -ENODEV;
1335 }
1336
1326 rc = pci_enable_device(pdev); 1337 rc = pci_enable_device(pdev);
1327 if (rc) 1338 if (rc)
1328 return rc; 1339 return rc;
@@ -1378,10 +1389,6 @@ static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1378 if (have_msi) 1389 if (have_msi)
1379 hpriv->flags |= AHCI_FLAG_MSI; 1390 hpriv->flags |= AHCI_FLAG_MSI;
1380 1391
1381 /* JMicron-specific fixup: make sure we're in AHCI mode */
1382 if (pdev->vendor == 0x197b)
1383 pci_write_config_byte(pdev, 0x41, 0xa1);
1384
1385 /* initialize adapter */ 1392 /* initialize adapter */
1386 rc = ahci_host_init(probe_ent); 1393 rc = ahci_host_init(probe_ent);
1387 if (rc) 1394 if (rc)