[PATCH 3/5] DMI: only ioremap stuff we actually need

From: Bjorn Helgaas <bjorn.helgaas_at_hp.com>
Date: 2006-01-20 07:13:17
dmi_scan_machine() tries to ioremap 0x10000 (64K) bytes, even though
it only looks at the first 32 bytes or so.  If the SMBIOS table is
near the end of a memory region, the ioremap() may fail when it
shouldn't.

This is in the efi_enabled path, so it really only affects ia64 at
the moment.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>

Index: work-mm3/arch/i386/kernel/dmi_scan.c
===================================================================
--- work-mm3.orig/arch/i386/kernel/dmi_scan.c	2006-01-19 11:26:17.000000000 -0700
+++ work-mm3/arch/i386/kernel/dmi_scan.c	2006-01-19 11:30:21.000000000 -0700
@@ -223,7 +223,7 @@
                 * needed during early boot.  This also means we can
                 * iounmap the space when we're done with it.
 		*/
-		p = ioremap((unsigned long)efi.smbios, 0x10000);
+		p = ioremap((unsigned long)efi.smbios, 32);
 		if (p == NULL)
 			goto out;
 
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Received on Fri Jan 20 07:13:54 2006

This archive was generated by hypermail 2.1.8 : 2006-01-20 07:17:03 EST