[PATCH] don't udelay() in sn_mmiob

[Jesse Barnes <jbarnes@engr.sgi.com>]

[-- Attachment #1: Type: text/plain, Size: 261 bytes --]

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


[-- Attachment #2: no-udelay-mmiob.patch --]
[-- Type: text/x-diff, Size: 431 bytes --]

===== 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);