---

yaml --- r: 143128 b: refs/heads/master c: e523b38 h: refs/heads/master v: v3
git-mirror · Apr 11, 2009 · b2b3c95 · b2b3c95
1 parent 80f6f09
commit b2b3c95
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Showing 2 changed files with 11 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 31d3568dfeb1dfb2735f119efe5ece7c6d40969c
+refs/heads/master: e523b38e2f568af58baa13120a994cbf24e6dee0
diff --git a/trunk/drivers/pci/dmar.c b/trunk/drivers/pci/dmar.c
@@ -173,12 +173,21 @@ dmar_parse_one_drhd(struct acpi_dmar_header *header)
 	struct dmar_drhd_unit *dmaru;
 	int ret = 0;
 
+	drhd = (struct acpi_dmar_hardware_unit *)header;
+	if (!drhd->address) {
+		/* Promote an attitude of violence to a BIOS engineer today */
+		WARN(1, "Your BIOS is broken; DMAR reported at address zero!\n"
+		     "BIOS vendor: %s; Ver: %s; Product Version: %s\n",
+		     dmi_get_system_info(DMI_BIOS_VENDOR),
+		     dmi_get_system_info(DMI_BIOS_VERSION),
+		     dmi_get_system_info(DMI_PRODUCT_VERSION));
+		return -ENODEV;
+	}
 	dmaru = kzalloc(sizeof(*dmaru), GFP_KERNEL);
 	if (!dmaru)
 		return -ENOMEM;
 
 	dmaru->hdr = header;
-	drhd = (struct acpi_dmar_hardware_unit *)header;
 	dmaru->reg_base_addr = drhd->address;
 	dmaru->segment = drhd->segment;
 	dmaru->include_all = drhd->flags & 0x1; /* BIT0: INCLUDE_ALL */