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Do not attach to PCI bridges in AHCI driver

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Some vendors use the same VID:PID combination in AHCI and PCI bridge cards

Submitted by:	Wojciech Macek <wma@semihalf.com>
Obtained from:	Semihalf
This commit is contained in:
zbb 2014-01-01 20:18:03 +00:00
parent 8bb090de97
commit 2df622e3b7
1 changed files with 7 additions and 0 deletions
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7
sys/dev/ahci/ahci.c
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@ -375,6 +375,13 @@ ahci_probe(device_t dev)
uint32_t devid = pci_get_devid(dev);
uint8_t revid = pci_get_revid(dev);
/*
* Ensure it is not a PCI bridge (some vendors use
* the same PID and VID in PCI bridge and AHCI cards).
*/
if (pci_get_class(dev) == PCIC_BRIDGE)
return (ENXIO);
/* Is this a possible AHCI candidate? */
if (pci_get_class(dev) == PCIC_STORAGE &&
pci_get_subclass(dev) == PCIS_STORAGE_SATA &&