[SCSI] qla2xxx: Enable CRB based doorbell posting for request queue as default for ISP 82xx.
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/qla2xxx/qla_nx.c b/drivers/scsi/qla2xxx/qla_nx.c
index ee575b4..e3e3ebd 100644
--- a/drivers/scsi/qla2xxx/qla_nx.c
+++ b/drivers/scsi/qla2xxx/qla_nx.c
@@ -3372,11 +3372,16 @@
dbval = 0x04 | (ha->portnum << 5);
dbval = dbval | (req->id << 8) | (req->ring_index << 16);
- WRT_REG_DWORD((unsigned long __iomem *)ha->nxdb_wr_ptr, dbval);
- wmb();
- while (RD_REG_DWORD(ha->nxdb_rd_ptr) != dbval) {
- WRT_REG_DWORD((unsigned long __iomem *)ha->nxdb_wr_ptr, dbval);
+ if (ql2xdbwr)
+ qla82xx_wr_32(ha, ha->nxdb_wr_ptr, dbval);
+ else {
+ WRT_REG_DWORD((unsigned long __iomem *)ha->nxdb_wr_ptr, dbval);
wmb();
+ while (RD_REG_DWORD(ha->nxdb_rd_ptr) != dbval) {
+ WRT_REG_DWORD((unsigned long __iomem *)ha->nxdb_wr_ptr,
+ dbval);
+ wmb();
+ }
}
}