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[PATCH] libata: preserve SATA SPD setting over hard resets 

Don't overwrite SPD setting during hard reset.  This change has the
(intended) side effect of honoring the BIOS configuration.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2006-04-01 01:38:18 +09:00 committed by Jeff Garzik
parent e82cbdb9a3
commit 852ee16a91
1 changed files with 9 additions and 3 deletions
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12
drivers/scsi/libata-core.c
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@ -2132,9 +2132,11 @@ err_out:
static int sata_phy_resume(struct ata_port *ap)
{
unsigned long timeout = jiffies + (HZ * 5);
u32 sstatus;
u32 scontrol, sstatus;
scr_write_flush(ap, SCR_CONTROL, 0x300);
scontrol = scr_read(ap, SCR_CONTROL);
scontrol = (scontrol & 0x0f0) | 0x300;
scr_write_flush(ap, SCR_CONTROL, scontrol);
/* Wait for phy to become ready, if necessary. */
do {
@ -2247,10 +2249,14 @@ int ata_std_softreset(struct ata_port *ap, int verbose, unsigned int *classes)
*/
int sata_std_hardreset(struct ata_port *ap, int verbose, unsigned int *class)
{
u32 scontrol;
DPRINTK("ENTER\n");
/* Issue phy wake/reset */
scr_write_flush(ap, SCR_CONTROL, 0x301);
scontrol = scr_read(ap, SCR_CONTROL);
scontrol = (scontrol & 0x0f0) | 0x301;
scr_write_flush(ap, SCR_CONTROL, scontrol);
/*
* Couldn't find anything in SATA I/II specs, but AHCI-1.1