x86: check dsdt before find oem table for es7000, v2

[cascardo/linux.git] / arch / x86 / mach-generic / es7000.c

diff --git a/arch/x86/mach-generic/es7000.c b/arch/x86/mach-generic/es7000.c
index 520cca0..6513d41 100644 (file)
--- a/arch/x86/mach-generic/es7000.c
+++ b/arch/x86/mach-generic/es7000.c
@@ -47,16 +47,26 @@ static __init int mps_oem_check(struct mp_config_table *mpc, char *oem,
 /* Hook from generic ACPI tables.c */
 static int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
 {
-       unsigned long oem_addr;
+       unsigned long oem_addr = 0;
+       int check_dsdt;
+       int ret = 0;
+
+       /* check dsdt at first to avoid clear fix_map for oem_addr */
+       check_dsdt = es7000_check_dsdt();
+
        if (!find_unisys_acpi_oem_table(&oem_addr)) {
-               if (es7000_check_dsdt())
-                       return parse_unisys_oem((char *)oem_addr);
+               if (check_dsdt)
+                       ret = parse_unisys_oem((char *)oem_addr);
                else {
                        setup_unisys();
-                       return 1;
+                       ret = 1;
                }
+               /*
+                * we need to unmap it
+                */
+               unmap_unisys_acpi_oem_table(oem_addr);
        }
-       return 0;
+       return ret;
 }
 #else
 static int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)