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scsi: scsi_transport_sas: Fix the maximum channel scanning issue

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After commit 37c4e72b06 ("scsi: Fix sas_user_scan() to handle wildcard
and multi-channel scans"), if the device supports multiple channels (0 to
shost->max_channel), user_scan() invokes updated sas_user_scan() to perform
the scan behavior for a specific transfer.  However, when the user
specifies shost->max_channel, it will return -EINVAL, which is not
expected.

Fix and support specifying the scan shost->max_channel for scanning.

Fixes: 37c4e72b06 ("scsi: Fix sas_user_scan() to handle wildcard and multi-channel scans")
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Link: https://patch.msgid.link/20260317063147.2182562-1-liyihang9@huawei.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Yihang Li
2026-03-17 14:31:47 +08:00
committed by Martin K. Petersen
parent 1333eee56c
commit d71afa9deb
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/scsi_transport_sas.c
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@@ -1734,7 +1734,7 @@ static int sas_user_scan(struct Scsi_Host *shost, uint channel,
break;
default:
if (channel < shost->max_channel) {
if (channel <= shost->max_channel) {
res = scsi_scan_host_selected(shost, channel, id, lun,
SCSI_SCAN_MANUAL);
} else {