Commit 517d3cc1 authored May 13, 2009 by Arjan van de Ven Committed by Jeff Garzik Jun 10, 2009

[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: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

parent 7f4774b3

drivers/ata/ata_piix.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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;

		pci_set_master(pdev);
		return ata_pci_sff_activate_host(host, ata_sff_interrupt, &piix_sht);

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