Merge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux...

[sfrench/cifs-2.6.git] / drivers / acpi / bus.c

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 37132dc2da03df35ec25b1e8e203715ceb172aac..9042a85796685ee66dda133e55f4617016e01d00 100644 (file)
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -69,6 +69,44 @@ static struct dmi_system_id __cpuinitdata power_nocheck_dmi_table[] = {
 };
 
 
+#ifdef CONFIG_X86
+static int set_copy_dsdt(const struct dmi_system_id *id)
+{
+       printk(KERN_NOTICE "%s detected - "
+               "force copy of DSDT to local memory\n", id->ident);
+       acpi_gbl_copy_dsdt_locally = 1;
+       return 0;
+}
+
+static struct dmi_system_id dsdt_dmi_table[] __initdata = {
+       /*
+        * Insyde BIOS on some TOSHIBA machines corrupt the DSDT.
+        * https://bugzilla.kernel.org/show_bug.cgi?id=14679
+        */
+       {
+        .callback = set_copy_dsdt,
+        .ident = "TOSHIBA Satellite A505",
+        .matches = {
+               DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+               DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A505"),
+               },
+       },
+       {
+        .callback = set_copy_dsdt,
+        .ident = "TOSHIBA Satellite L505D",
+        .matches = {
+               DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+               DMI_MATCH(DMI_PRODUCT_NAME, "Satellite L505D"),
+               },
+       },
+       {}
+};
+#else
+static struct dmi_system_id dsdt_dmi_table[] __initdata = {
+       {}
+};
+#endif
+
 /* --------------------------------------------------------------------------
                                 Device Management
    -------------------------------------------------------------------------- */
@@ -527,7 +565,7 @@ int acpi_bus_generate_proc_event4(const char *device_class, const char *bus_id,
        if (!event_is_open)
                return 0;
 
-       event = kmalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC);
+       event = kzalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC);
        if (!event)
                return -ENOMEM;
 
@@ -813,6 +851,12 @@ void __init acpi_early_init(void)
 
        acpi_gbl_permanent_mmap = 1;
 
+       /*
+        * If the machine falls into the DMI check table,
+        * DSDT will be copied to memory
+        */
+       dmi_check_system(dsdt_dmi_table);
+
        status = acpi_reallocate_root_table();
        if (ACPI_FAILURE(status)) {
                printk(KERN_ERR PREFIX