scsi: scsi_debug: Reset tape setting at device reset

Set tape block size, density and compression to default values when the
device is reset (either directly or via target, bus or host reset).

Signed-off-by: Kai Mäkisara <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: John Meneghini <[email protected]>
Tested-by: John Meneghini <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

1 files changed, 20 insertions, 1 deletions

diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 394a830327c9..39118418ca16 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -6772,6 +6772,20 @@ static int sdebug_fail_lun_reset(struct scsi_cmnd *cmnd)
 	return 0;
 }
 
+static void scsi_tape_reset_clear(struct sdebug_dev_info *devip)
+{
+	if (sdebug_ptype == TYPE_TAPE) {
+		int i;
+
+		devip->tape_blksize = TAPE_DEF_BLKSIZE;
+		devip->tape_density = TAPE_DEF_DENSITY;
+		devip->tape_partition = 0;
+		devip->tape_dce = 0;
+		for (i = 0; i < TAPE_MAX_PARTITIONS; i++)
+			devip->tape_location[i] = 0;
+	}
+}
+
 static int scsi_debug_device_reset(struct scsi_cmnd *SCpnt)
 {
 	struct scsi_device *sdp = SCpnt->device;
@@ -6785,8 +6799,10 @@ static int scsi_debug_device_reset(struct scsi_cmnd *SCpnt)
 		sdev_printk(KERN_INFO, sdp, "%s\n", __func__);
 
 	scsi_debug_stop_all_queued(sdp);
-	if (devip)
+	if (devip) {
 		set_bit(SDEBUG_UA_POR, devip->uas_bm);
+		scsi_tape_reset_clear(devip);
+	}
 
 	if (sdebug_fail_lun_reset(SCpnt)) {
 		scmd_printk(KERN_INFO, SCpnt, "fail lun reset 0x%x\n", opcode);
@@ -6824,6 +6840,7 @@ static int scsi_debug_target_reset(struct scsi_cmnd *SCpnt)
 	list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) {
 		if (devip->target == sdp->id) {
 			set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm);
+			scsi_tape_reset_clear(devip);
 			++k;
 		}
 	}
@@ -6855,6 +6872,7 @@ static int scsi_debug_bus_reset(struct scsi_cmnd *SCpnt)
 
 	list_for_each_entry(devip, &sdbg_host->dev_info_list, dev_list) {
 		set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm);
+		scsi_tape_reset_clear(devip);
 		++k;
 	}
 
@@ -6878,6 +6896,7 @@ static int scsi_debug_host_reset(struct scsi_cmnd *SCpnt)
 		list_for_each_entry(devip, &sdbg_host->dev_info_list,
 				    dev_list) {
 			set_bit(SDEBUG_UA_BUS_RESET, devip->uas_bm);
+			scsi_tape_reset_clear(devip);
 			++k;
 		}
 	}