From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jesse Barnes <jbarnes@engr.sgi.com>
Date: Wed, 26 May 2004 21:49:02 +0000
Subject: [PATCH] don't udelay() in sn_mmiob
Message-Id: <200405261749.02254.jbarnes@engr.sgi.com>
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sn_mmiob is a lightweight way to ensure PCI write ordering, intended to be 
used as an alternative to doing a PIO read.  Unfortunately, with the udelay() 
in there, it ends up being slower than a PCI read on small configurations, so 
remove it.

Thanks,
Jesse


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===== arch/ia64/sn/io/machvec/iomv.c 1.8 vs edited =====
--- 1.8/arch/ia64/sn/io/machvec/iomv.c	Tue Sep 16 12:00:45 2003
+++ edited/arch/ia64/sn/io/machvec/iomv.c	Wed May 26 13:49:19 2004
@@ -71,6 +71,6 @@
 {
 	while ((((volatile unsigned long) (*pda->pio_write_status_addr)) & SH_PIO_WRITE_STATUS_0_PENDING_WRITE_COUNT_MASK) != 
 				SH_PIO_WRITE_STATUS_0_PENDING_WRITE_COUNT_MASK)
-		udelay(1);
+		;
 }
 EXPORT_SYMBOL(sn_mmiob);

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