Commit afe3cc51 authored Jun 06, 2007 by Tejun Heo Committed by Jeff Garzik Jun 09, 2007

libata: fix hw_sata_spd_limit initialization



hw_sata_spd_limit used to be incorrectly initialized to zero instead
of UINT_MAX if SPD is zero in SControl register.  This breaks PHY
speed down.  Fix it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

parent ef143d57

drivers/ata/libata-core.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -6317,6 +6317,7 @@ int ata_host_register(struct ata_host host, struct scsi_host_template sht)
		/* init sata_spd_limit to the current value */
		if (sata_scr_read(ap, SCR_CONTROL, &scontrol) == 0) {
		int spd = (scontrol >> 4) & 0xf;
		if (spd)
		ap->hw_sata_spd_limit &= (1 << spd) - 1;
		}
		ap->sata_spd_limit = ap->hw_sata_spd_limit;