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 b046ffa..de9ba78 100644 (file)
--- 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);