Don't bother forcing disks to spin up on resume, as they
will do so automatically when accessed, and forcing them
to spin up slows down the resume. Add a second bit to the
manage_start_stop flag to restore the previous behavior.
---
drivers/scsi/sd.c | 6 +++---
include/scsi/scsi_device.h | 2 +-
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index e62d17d..3143311 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -3083,7 +3083,7 @@ static void sd_shutdown(struct device *dev)
sd_sync_cache(sdkp);
}
- if (system_state != SYSTEM_RESTART && sdkp->device->manage_start_stop) {
+ if (system_state != SYSTEM_RESTART && (sdkp->device->manage_start_stop
& 1)) {
sd_printk(KERN_NOTICE, sdkp, "Stopping disk\n");
sd_start_stop_device(sdkp, 0);
}
@@ -3107,7 +3107,7 @@ static int sd_suspend(struct device *dev)
goto done;
}
- if (sdkp->device->manage_start_stop) {
+ if (sdkp->device->manage_start_stop & 1) {
sd_printk(KERN_NOTICE, sdkp, "Stopping disk\n");
ret = sd_start_stop_device(sdkp, 0);
}
@@ -3122,7 +3122,7 @@ static int sd_resume(struct device *dev)
struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev);
int ret = 0;
- if (!sdkp->device->manage_start_stop)
+ if (!(sdkp->device->manage_start_stop & 2))
goto done;
sd_printk(KERN_NOTICE, sdkp, "Starting disk\n");
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index d65fbec..1c46d2d 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -152,7 +152,7 @@ struct scsi_device {
unsigned use_192_bytes_for_3f:1; /* ask for 192 bytes from page 0x3f */
unsigned no_start_on_add:1; /* do not issue start on add */
unsigned allow_restart:1; /* issue START_UNIT in error handler */
- unsigned manage_start_stop:1; /* Let HLD (sd) manage start/stop */
+ unsigned manage_start_stop:2; /* Let HLD (sd) manage start/stop */
unsigned start_stop_pwr_cond:1; /* Set power cond. in START_STOP_UNIT */
unsigned no_uld_attach:1; /* disable connecting to upper level drivers
*/
unsigned select_no_atn:1;
--
1.8.3.2
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