scsi: qla2xxx: edif: Remove old doorbell interface

Recently driver has implemented a new doorbell mechanism via bsg.  The new
doorbell tells driver the exact buffer size application has where driver
can fill it up with events. The old doorbell guestimated application buffer
size is 256.

Remove duplicate functionality, the application has moved on to the new
doorbell interface.

Link: https://lore.kernel.org/r/20220607044627.19563-9-njavali@marvell.com
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 0 insertions, 78 deletions

diff --git a/drivers/scsi/qla2xxx/qla_edif.c b/drivers/scsi/qla2xxx/qla_edif.c
index 06c1252019e1..3ece46ae9d6b 100644
--- a/drivers/scsi/qla2xxx/qla_edif.c
+++ b/drivers/scsi/qla2xxx/qla_edif.c
@@ -2265,84 +2265,6 @@ qla_edif_timer(scsi_qla_host_t *vha)
 		qla_edif_dbell_bsg_done(vha);
 }
 
-/*
- * app uses separate thread to read this. It'll wait until the doorbell
- * is rung by the driver or the max wait time has expired
- */
-ssize_t
-edif_doorbell_show(struct device *dev, struct device_attribute *attr,
-		char *buf)
-{
-	scsi_qla_host_t *vha = shost_priv(class_to_shost(dev));
-	struct edb_node	*dbnode = NULL;
-	struct edif_app_dbell *ap = (struct edif_app_dbell *)buf;
-	uint32_t dat_siz, buf_size, sz;
-
-	/* TODO: app currently hardcoded to 256. Will transition to bsg */
-	sz = 256;
-
-	/* stop new threads from waiting if we're not init'd */
-	if (DBELL_INACTIVE(vha)) {
-		ql_dbg(ql_dbg_edif + ql_dbg_verbose, vha, 0x09122,
-		    "%s error - edif db not enabled\n", __func__);
-		return 0;
-	}
-
-	if (!vha->hw->flags.edif_enabled) {
-		/* edif not enabled */
-		ql_dbg(ql_dbg_edif + ql_dbg_verbose, vha, 0x09122,
-		    "%s error - edif not enabled\n", __func__);
-		return -1;
-	}
-
-	buf_size = 0;
-	while ((sz - buf_size) >= sizeof(struct edb_node)) {
-		/* remove the next item from the doorbell list */
-		dat_siz = 0;
-		dbnode = qla_edb_getnext(vha);
-		if (dbnode) {
-			ap->event_code = dbnode->ntype;
-			switch (dbnode->ntype) {
-			case VND_CMD_AUTH_STATE_SESSION_SHUTDOWN:
-			case VND_CMD_AUTH_STATE_NEEDED:
-				ap->port_id = dbnode->u.plogi_did;
-				dat_siz += sizeof(ap->port_id);
-				break;
-			case VND_CMD_AUTH_STATE_ELS_RCVD:
-				ap->port_id = dbnode->u.els_sid;
-				dat_siz += sizeof(ap->port_id);
-				break;
-			case VND_CMD_AUTH_STATE_SAUPDATE_COMPL:
-				ap->port_id = dbnode->u.sa_aen.port_id;
-				memcpy(ap->event_data, &dbnode->u,
-						sizeof(struct edif_sa_update_aen));
-				dat_siz += sizeof(struct edif_sa_update_aen);
-				break;
-			default:
-				/* unknown node type, rtn unknown ntype */
-				ap->event_code = VND_CMD_AUTH_STATE_UNDEF;
-				memcpy(ap->event_data, &dbnode->ntype, 4);
-				dat_siz += 4;
-				break;
-			}
-
-			ql_dbg(ql_dbg_edif, vha, 0x09102,
-				"%s Doorbell consumed : type=%d %p\n",
-				__func__, dbnode->ntype, dbnode);
-			/* we're done with the db node, so free it up */
-			kfree(dbnode);
-		} else {
-			break;
-		}
-
-		ap->event_data_size = dat_siz;
-		/* 8bytes = ap->event_code + ap->event_data_size */
-		buf_size += dat_siz + 8;
-		ap = (struct edif_app_dbell *)(buf + buf_size);
-	}
-	return buf_size;
-}
-
 static void qla_noop_sp_done(srb_t *sp, int res)
 {
 	sp->fcport->flags &= ~(FCF_ASYNC_SENT | FCF_ASYNC_ACTIVE);