summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--drivers/acpi/ec.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 3fcb9132881e..2c790b5badb3 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -120,6 +120,7 @@ static struct acpi_ec {
static int EC_FLAGS_MSI; /* Out-of-spec MSI controller */
static int EC_FLAGS_VALIDATE_ECDT; /* ASUStec ECDTs need to be validated */
+static int EC_FLAGS_SKIP_DSDT_SCAN; /* Not all BIOS survive early DSDT scan */
/* --------------------------------------------------------------------------
Transaction Management
@@ -900,6 +901,13 @@ static const struct acpi_device_id ec_device_ids[] = {
{"", 0},
};
+/* Some BIOS do not survive early DSDT scan, skip it */
+static int ec_skip_dsdt_scan(const struct dmi_system_id *id)
+{
+ EC_FLAGS_SKIP_DSDT_SCAN = 1;
+ return 0;
+}
+
/* ASUStek often supplies us with broken ECDT, validate it */
static int ec_validate_ecdt(const struct dmi_system_id *id)
{
@@ -917,6 +925,10 @@ static int ec_flag_msi(const struct dmi_system_id *id)
static struct dmi_system_id __initdata ec_dmi_table[] = {
{
+ ec_skip_dsdt_scan, "Compal JFL92", {
+ DMI_MATCH(DMI_BIOS_VENDOR, "COMPAL"),
+ DMI_MATCH(DMI_BOARD_NAME, "JFL92") }, NULL},
+ {
ec_flag_msi, "MSI hardware", {
DMI_MATCH(DMI_BIOS_VENDOR, "Micro-Star"),
DMI_MATCH(DMI_CHASSIS_VENDOR, "MICRO-Star") }, NULL},
@@ -959,6 +971,9 @@ int __init acpi_ec_ecdt_probe(void)
/* fall through */
}
+ if (EC_FLAGS_SKIP_DSDT_SCAN)
+ return -ENODEV;
+
/* This workaround is needed only on some broken machines,
* which require early EC, but fail to provide ECDT */
printk(KERN_DEBUG PREFIX "Look up EC in DSDT\n");