Merge tag 'ata-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata

Pull ata fix from Damien Le Moal:

 - Prevent the scsi disk driver from issuing a START STOP UNIT command
   for ATA devices during system resume as this causes various issues
   reported by multiple users.

* tag 'ata-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
  ata,scsi: do not issue START STOP UNIT on resume

Author: torvalds

drivers/ata/libata-scsi.c

@@ -1100,7 +1100,14 @@ int ata_scsi_dev_config(struct scsi_device *sdev, struct ata_device *dev)
 		}
 	} else {
 		sdev->sector_size = ata_id_logical_sector_size(dev->id);
+		/*
+		 * Stop the drive on suspend but do not issue START STOP UNIT
+		 * on resume as this is not necessary and may fail: the device
+		 * will be woken up by ata_port_pm_resume() with a port reset
+		 * and device revalidation.
+		 */
 		sdev->manage_start_stop = 1;
+		sdev->no_start_on_resume = 1;
 	}
 
 	/*

drivers/scsi/sd.c

@@ -3876,16 +3876,19 @@ static int sd_suspend_runtime(struct device *dev)
 static int sd_resume(struct device *dev)
 {
 	struct scsi_disk *sdkp = dev_get_drvdata(dev);
-	int ret;
+	int ret = 0;
 
 	if (!sdkp)	/* E.g.: runtime resume at the start of sd_probe() */
 		return 0;
 
 	if (!sdkp->device->manage_start_stop)
 		return 0;
 
-	sd_printk(KERN_NOTICE, sdkp, "Starting disk\n");
-	ret = sd_start_stop_device(sdkp, 1);
+	if (!sdkp->device->no_start_on_resume) {
+		sd_printk(KERN_NOTICE, sdkp, "Starting disk\n");
+		ret = sd_start_stop_device(sdkp, 1);
+	}
+
 	if (!ret)
 		opal_unlock_from_suspend(sdkp->opal_dev);
 	return ret;

include/scsi/scsi_device.h

@@ -194,6 +194,7 @@ struct scsi_device {
 	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 no_start_on_resume:1; /* Do not issue START_STOP_UNIT on resume */
 	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;