summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorMark Nelson <mdnelson8@gmail.com>2009-11-22 12:07:41 +1100
committerJeff Garzik <jgarzik@redhat.com>2009-12-03 14:36:17 -0500
commit7a02267e0f3938a6e91c0a0a82211e4d7007210e (patch)
tree0bb862898d1eae870e3b575d1702c94ac0e2dc44
parent89d3b3603bfb648e0113d8682d4f84dd18a776bd (diff)
ahci: let users know that Promise PDC42819 support is limited to SATA devices
ahci can drive the Promise PDC42819, but obviously it can only use SATA disks connected to this controller. The controller can actually support SAS disks as well, but we only know how to use it in it's AHCI mode. Add a message to let users know that because ahci is driving their chip they can only use the SATA disks connected to this controller. Signed-off-by: Mark Nelson <mdnelson8@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
-rw-r--r--drivers/ata/ahci.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 9519c777af83..b8bea100a160 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -3004,6 +3004,14 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
if (pdev->vendor == PCI_VENDOR_ID_MARVELL && !marvell_enable)
return -ENODEV;
+ /* Promise's PDC42819 is a SAS/SATA controller that has an AHCI mode.
+ * At the moment, we can only use the AHCI mode. Let the users know
+ * that for SAS drives they're out of luck.
+ */
+ if (pdev->vendor == PCI_VENDOR_ID_PROMISE)
+ dev_printk(KERN_INFO, &pdev->dev, "PDC42819 "
+ "can only drive SATA devices with this driver\n");
+
/* acquire resources */
rc = pcim_enable_device(pdev);
if (rc)