AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-11-25 04:50:57 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

ACPI: EC: Switch from boot_ec as soon as we find its desc in DSDT.

Browse Source 
Some ASUS laptops fail to use boot time EC
and need to eventually switch to one described in DSDT.

http://bugzilla.kernel.org/show_bug.cgi?id=8709

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Alexey Starikovskiy 2007-08-03 17:57:53 -04:00 committed by Len Brown
parent 52fe4bdf40
commit 7c010de750
1 changed files with 16 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
drivers/acpi/ec.c
View File

@ -679,6 +679,14 @@ ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval)
return AE_CTRL_TERMINATE;
}
static void ec_remove_handlers(struct acpi_ec *ec)
{
acpi_remove_address_space_handler(ec->handle,
ACPI_ADR_SPACE_EC,
&acpi_ec_space_handler);
acpi_remove_gpe_handler(NULL, ec->gpe, &acpi_ec_gpe_handler);
}
static int acpi_ec_add(struct acpi_device *device)
{
struct acpi_ec *ec = NULL;
@ -702,16 +710,15 @@ static int acpi_ec_add(struct acpi_device *device)
/* Check if we found the boot EC */
if (boot_ec) {
if (boot_ec->gpe == ec->gpe) {
/* We might have incorrect info for GL at boot time */
mutex_lock(&boot_ec->lock);
boot_ec->global_lock = ec->global_lock;
/* Copy handlers from new ec into boot ec */
list_splice(&ec->list, &boot_ec->list);
ec_remove_handlers(boot_ec);
mutex_unlock(&boot_ec->lock);
kfree(ec);
ec = boot_ec;
mutex_destroy(&boot_ec->lock);
kfree(boot_ec);
first_ec = boot_ec = NULL;
}
} else
}
if (!first_ec)
first_ec = ec;
ec->handle = device->handle;
acpi_driver_data(device) = ec;
@ -740,9 +747,6 @@ static int acpi_ec_remove(struct acpi_device *device, int type)
if (ec == first_ec)
first_ec = NULL;
/* Don't touch boot EC */
if (boot_ec != ec)
kfree(ec);
return 0;
}
@ -806,9 +810,7 @@ static int acpi_ec_start(struct acpi_device *device)
if (!ec)
return -EINVAL;
/* Boot EC is already working */
if (ec != boot_ec)
ret = ec_install_handlers(ec);
ret = ec_install_handlers(ec);
/* EC is fully operational, allow queries */
atomic_set(&ec->query_pending, 0);
@ -818,7 +820,6 @@ static int acpi_ec_start(struct acpi_device *device)
static int acpi_ec_stop(struct acpi_device *device, int type)
{
acpi_status status;
struct acpi_ec *ec;
if (!device)
@ -827,21 +828,7 @@ static int acpi_ec_stop(struct acpi_device *device, int type)
ec = acpi_driver_data(device);
if (!ec)
return -EINVAL;
/* Don't touch boot EC */
if (ec == boot_ec)
return 0;
status = acpi_remove_address_space_handler(ec->handle,
ACPI_ADR_SPACE_EC,
&acpi_ec_space_handler);
if (ACPI_FAILURE(status))
return -ENODEV;
status = acpi_remove_gpe_handler(NULL, ec->gpe, &acpi_ec_gpe_handler);
if (ACPI_FAILURE(status))
return -ENODEV;
ec_remove_handlers(ec);
return 0;
}