Re: [ANNOUNCE] QLogic qla2xxx driver update available (v8.00.00b6).

[Jeremy Higdon <jeremy@sgi.com>]

I've found a problem with the driver on our SN2 system.  There
needs to be a register read after updating the Request Queue In
index, prior to releasing the host spin lock.

The calls to sn_mmiob() will need to be replaced by reading an
appropriate register on the chip.  sn_mmiob() is a lightweight
way of doing the same thing without having to go to the chip,
but only on SGI SN platforms.



--- drivers/scsi/qla2xxx/qla_iocb.c	Wed Nov 26 17:28:26 2003
+++ ../qla2xxx/qla_iocb.c	Tue Nov	 4 15:48:29 2003
@@ -506,7 +506,6 @@
	/* Set chip new ring index. */
	reg_flushed = CACHE_FLUSH(ISP_REQ_Q_IN(reg));
	WRT_REG_WORD(ISP_REQ_Q_IN(reg), ha->req_ring_index);
-	sn_mmiob();
 
	spin_unlock_irqrestore(&ha->hardware_lock, flags);
	return (QLA_SUCCESS);
@@ -778,7 +777,6 @@
 
	/* Set chip new ring index. */
	WRT_REG_WORD(ISP_REQ_Q_IN(reg), ha->req_ring_index);
-	sn_mmiob();
 
	LEAVE(__func__);
 }