From: Linus Torvalds <torvalds@g5.osdl.org>
Date: Tue, 20 Jun 2006 01:01:27 +0000 (-0700)
Subject: Improve SATA core suspend/resume
X-Git-Tag: firefly_0821_release~35495
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=1cca0ebbb74298958dae1d1d3e7e9287c98a720c;p=firefly-linux-kernel-4.4.55.git

Improve SATA core suspend/resume

Doing a full ata_busy_sleep() seems to get suspend and resume working
fine on the Apple Mac Mini, at least.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index b046ffa22101..de9ba7890b5a 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -4297,6 +4297,7 @@ static int ata_start_drive(struct ata_port *ap, struct ata_device *dev)
 int ata_device_resume(struct ata_port *ap, struct ata_device *dev)
 {
 	if (ap->flags & ATA_FLAG_SUSPENDED) {
+		ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT);
 		ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 200000);
 		ap->flags &= ~ATA_FLAG_SUSPENDED;
 		ata_set_mode(ap);