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Index: sys/cam/scsi/scsi_da.c
===================================================================
--- sys/cam/scsi/scsi_da.c
+++ sys/cam/scsi/scsi_da.c
@@ -1469,6 +1469,7 @@
static int da_default_timeout = DA_DEFAULT_TIMEOUT;
static sbintime_t da_default_softtimeout = DA_DEFAULT_SOFTTIMEOUT;
static int da_send_ordered = DA_DEFAULT_SEND_ORDERED;
+static int da_disable_wp_detection = 0;
static SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
"CAM Direct Access Disk driver");
@@ -1480,6 +1481,8 @@
&da_default_timeout, 0, "Normal I/O timeout (in seconds)");
SYSCTL_INT(_kern_cam_da, OID_AUTO, send_ordered, CTLFLAG_RWTUN,
&da_send_ordered, 0, "Send Ordered Tags");
+SYSCTL_INT(_kern_cam_da, OID_AUTO, disable_wp_detection, CTLFLAG_RWTUN,
+ &da_disable_wp_detection, 0, "Send Ordered Tags");
SYSCTL_PROC(_kern_cam_da, OID_AUTO, default_softtimeout,
CTLTYPE_UINT | CTLFLAG_RW, NULL, 0, dasysctlsofttimeout, "I",
@@ -3336,12 +3339,22 @@
void *mode_buf;
int mode_buf_len;
+ if (da_disable_wp_detection) {
+ if ((softc->flags & DA_FLAG_CAN_RC16) != 0)
+ softc->state = DA_STATE_PROBE_RC16;
+ else
+ softc->state = DA_STATE_PROBE_RC;
+ goto skipstate;
+ }
mode_buf_len = 192;
mode_buf = malloc(mode_buf_len, M_SCSIDA, M_NOWAIT);
if (mode_buf == NULL) {
xpt_print(periph->path, "Unable to send mode sense - "
"malloc failure\n");
- softc->state = DA_STATE_PROBE_RC;
+ if ((softc->flags & DA_FLAG_CAN_RC16) != 0)
+ softc->state = DA_STATE_PROBE_RC16;
+ else
+ softc->state = DA_STATE_PROBE_RC;
goto skipstate;
}
scsi_mode_sense_len(&start_ccb->csio,

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