[patch] Enable parallel scan on ata_piix

[Arjan van de Ven <arjan@infradead.org>]

Hi,

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.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>

diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index ef8b30d..993f7af 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -1563,6 +1563,7 @@ 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);


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
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