[PATCH v2 6/7] scsi: scsi_debug: Reset tape setting at device reset

Kai Mäkisara
2025-02-13T09:27:24Z

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>
---
drivers/scsi/scsi_debug.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 0a5cd35c41de..7da1758da3f5 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;
}
}
--
2.43.0