[PATCH] ioc4: PCI bus speed detection

Several hardware features of SGI's IOC4 I/O controller chip require
timing-related driver calculations dependent upon the PCI bus speed.  This
patch enables the core IOC4 driver code to detect the actual bus speed and
store a value that can later be used by the IOC4 subdrivers as needed.

Signed-off-by: Brent Casavant <bcasavan@sgi.com>
Acked-by: Pat Gefre <pfg@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/sn/Kconfig b/drivers/sn/Kconfig
index 20f7515..13b8d24 100644
--- a/drivers/sn/Kconfig
+++ b/drivers/sn/Kconfig
@@ -6,7 +6,7 @@
 
 config SGI_IOC4
 	tristate "SGI IOC4 Base IO support"
-	depends on IA64_GENERIC || IA64_SGI_SN2
+	depends on (IA64_GENERIC || IA64_SGI_SN2) && MMTIMER
 	default m
 	---help---
 	This option enables basic support for the SGI IOC4-based Base IO