Commit 517d3cc1 authored by Arjan van de Ven's avatar Arjan van de Ven Committed by Jeff Garzik

[libata] ata_piix: Enable parallel scan

This patch turns on parallel scanning for the ata_piix driver.
This driver is used on most netbooks (no AHCI for cheap storage it seems).
The scan is the dominating time factor in the kernel boot for these
devices; with this flag it gets cut in half for the device I used
for testing (eeepc).
Alan took a look at the driver source and concluded that it ought to be safe
to do for this driver.  Alan has also checked with the hardware team.
Signed-off-by: default avatarArjan van de Ven <>
Signed-off-by: default avatarAlan Cox <>
Signed-off-by: default avatarJeff Garzik <>
parent 7f4774b3
......@@ -1589,6 +1589,7 @@ static int __devinit piix_init_one(struct pci_dev *pdev,
host->ports[1]->mwdma_mask = 0;
host->ports[1]->udma_mask = 0;
host->flags |= ATA_HOST_PARALLEL_SCAN;
return ata_pci_sff_activate_host(host, ata_sff_interrupt, &piix_sht);
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