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ahci: let users know that Promise PDC42819 support is limited to SATA devices

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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>
This commit is contained in:
Mark Nelson 2009-11-22 12:07:41 +11:00 committed by Jeff Garzik
parent 89d3b3603b
commit 7a02267e0f
1 changed files with 8 additions and 0 deletions
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8
drivers/ata/ahci.c
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@ -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)