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 <Kai.Makisara@kolumbus.fi>
Link: https://lore.kernel.org/r/20250213092636.2510-7-Kai.Makisara@kolumbus.fi
Reviewed-by: John Meneghini <jmeneghi@redhat.com>
Tested-by: John Meneghini <jmeneghi@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 394a830327c9c70f6d5e38802ce9ca29a9762853..39118418ca16cc444e1e47291dd8fc7841138d75 100644 (file)
--- 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;
                }
        }