diff --git a/sys/compat/linuxkpi/common/include/linux/mod_devicetable.h b/sys/compat/linuxkpi/common/include/linux/mod_devicetable.h
--- a/sys/compat/linuxkpi/common/include/linux/mod_devicetable.h
+++ b/sys/compat/linuxkpi/common/include/linux/mod_devicetable.h
@@ -55,7 +55,8 @@
 };
 
 struct dmi_strmatch {
-	unsigned char slot;
+	unsigned char slot : 7;
+	unsigned char exact_match : 1;
 	char substr[79];
 };
 
@@ -67,6 +68,6 @@
 };
 
 #define DMI_MATCH(a, b) { .slot = a, .substr = b }
-#define DMI_EXACT_MATCH(a, b)   { .slot = a, .substr = b, }
+#define DMI_EXACT_MATCH(a, b)   { .slot = a, .substr = b, .exact_match = 1 }
 
 #endif	/* __LINUXKPI_LINUX_MOD_DEVICETABLE_H__ */
diff --git a/sys/compat/linuxkpi/common/src/linux_dmi.c b/sys/compat/linuxkpi/common/src/linux_dmi.c
--- a/sys/compat/linuxkpi/common/src/linux_dmi.c
+++ b/sys/compat/linuxkpi/common/src/linux_dmi.c
@@ -82,9 +82,13 @@
 	for (i = 0; i < nitems(dsi->matches); i++) {
 		if (dsi->matches[i].slot == DMI_NONE)
 			break;
-		if (dmi_match(dsi->matches[i].slot,
-		    dsi->matches[i].substr) == false)
-			return (false);
+		if (dsi->matches[i].exact_match) {
+			return (dmi_match(dsi->matches[i].slot,
+			    dsi->matches[i].substr));
+		} else {
+			return (strstr(dmi_data[dsi->matches[i].slot],
+				    dsi->matches[i].substr) != NULL);
+		}
 	}
 
 	return (true);