From d88c9280a4ecd911ee9dd83730d5b373a7658611 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 18 Sep 2008 12:50:18 +0200
Subject: [PATCH] --- yaml --- r: 115211 b: refs/heads/master c:
 9a22b6e76ba75fa0f3963cdec7829156d00a7173 h: refs/heads/master i:   115209:
 c7ddca78d2f0b9a277a71047c8b0bf0dca3e8287   115207:
 983ba3db6e95fc36f7ba27c98f194c2d3ef87c48 v: v3

---
 [refs]                            |  2 +-
 trunk/drivers/firmware/dmi_scan.c | 22 ++++++++++++++++------
 2 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/[refs] b/[refs]
index f5cce6f4575f..98abb408503d 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8308c54d7e312f7a03e2ce2057d0837e6fe3843f
+refs/heads/master: 9a22b6e76ba75fa0f3963cdec7829156d00a7173
diff --git a/trunk/drivers/firmware/dmi_scan.c b/trunk/drivers/firmware/dmi_scan.c
index 455575be3560..3e526b6d00cb 100644
--- a/trunk/drivers/firmware/dmi_scan.c
+++ b/trunk/drivers/firmware/dmi_scan.c
@@ -15,6 +15,11 @@
  */
 static char dmi_empty_string[] = "        ";
 
+/*
+ * Catch too early calls to dmi_check_system():
+ */
+static int dmi_initialized;
+
 static const char * __init dmi_string_nosave(const struct dmi_header *dm, u8 s)
 {
 	const u8 *bp = ((u8 *) dm) + dm->length;
@@ -366,7 +371,7 @@ void __init dmi_scan_machine(void)
 
 	if (efi_enabled) {
 		if (efi.smbios == EFI_INVALID_TABLE_ADDR)
-			goto out;
+			goto error;
 
 		/* This is called as a core_initcall() because it isn't
 		 * needed during early boot.  This also means we can
@@ -374,13 +379,13 @@ void __init dmi_scan_machine(void)
 		 */
 		p = dmi_ioremap(efi.smbios, 32);
 		if (p == NULL)
-			goto out;
+			goto error;
 
 		rc = dmi_present(p + 0x10); /* offset of _DMI_ string */
 		dmi_iounmap(p, 32);
 		if (!rc) {
 			dmi_available = 1;
-			return;
+			goto out;
 		}
 	}
 	else {
@@ -391,19 +396,22 @@ void __init dmi_scan_machine(void)
 		 */
 		p = dmi_ioremap(0xF0000, 0x10000);
 		if (p == NULL)
-			goto out;
+			goto error;
 
 		for (q = p; q < p + 0x10000; q += 16) {
 			rc = dmi_present(q);
 			if (!rc) {
 				dmi_available = 1;
 				dmi_iounmap(p, 0x10000);
-				return;
+				goto out;
 			}
 		}
 		dmi_iounmap(p, 0x10000);
 	}
- out:	printk(KERN_INFO "DMI not present or invalid.\n");
+ error:
+	printk(KERN_INFO "DMI not present or invalid.\n");
+ out:
+	dmi_initialized = 1;
 }
 
 /**
@@ -424,6 +432,8 @@ int dmi_check_system(const struct dmi_system_id *list)
 	int i, count = 0;
 	const struct dmi_system_id *d = list;
 
+	WARN(!dmi_initialized, KERN_ERR "dmi check: not initialized yet.\n");
+
 	while (d->ident) {
 		for (i = 0; i < ARRAY_SIZE(d->matches); i++) {
 			int s = d->matches[i].slot;