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ACPICA: _OSI Support: handle any errors from acpi_os_acquire_mutex() 

Check for any errors. Handles possible timeout case if
ACPI_WAIT_FOREVER is changed to be less than "forever".
Jung-uk Kim.

Signed-off-by: Jung-uk Kim <jkim@FreeBSD.org>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Jung-uk Kim 2013-04-12 00:24:34 +00:00 committed by Rafael J. Wysocki
parent c34c82bc96
commit 388a990207
3 changed files with 34 additions and 11 deletions
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2
drivers/acpi/acpica/acutils.h
View File

@ -421,7 +421,7 @@ acpi_ut_get_object_size(union acpi_operand_object *obj, acpi_size * obj_length);
*/
acpi_status acpi_ut_initialize_interfaces(void);
void acpi_ut_interface_terminate(void);
acpi_status acpi_ut_interface_terminate(void);
acpi_status acpi_ut_install_interface(acpi_string interface_name);

26
drivers/acpi/acpica/utosi.c
View File

@ -108,9 +108,14 @@ static struct acpi_interface_info acpi_default_supported_interfaces[] = {
acpi_status acpi_ut_initialize_interfaces(void)
{
acpi_status status;
u32 i;
(void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
return (status);
}
acpi_gbl_supported_interfaces = acpi_default_supported_interfaces;
/* Link the static list of supported interfaces */
@ -132,20 +137,24 @@ acpi_status acpi_ut_initialize_interfaces(void)
*
* PARAMETERS: None
*
* RETURN: None
* RETURN: Status
*
* DESCRIPTION: Delete all interfaces in the global list. Sets
* acpi_gbl_supported_interfaces to NULL.
*
******************************************************************************/
void acpi_ut_interface_terminate(void)
acpi_status acpi_ut_interface_terminate(void)
{
acpi_status status;
struct acpi_interface_info *next_interface;
(void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
next_interface = acpi_gbl_supported_interfaces;
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
return (status);
}
next_interface = acpi_gbl_supported_interfaces;
while (next_interface) {
acpi_gbl_supported_interfaces = next_interface->next;
@ -160,6 +169,7 @@ void acpi_ut_interface_terminate(void)
}
acpi_os_release_mutex(acpi_gbl_osi_mutex);
return (AE_OK);
}
/*******************************************************************************
@ -315,6 +325,7 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state * walk_state)
union acpi_operand_object *return_desc;
struct acpi_interface_info *interface_info;
acpi_interface_handler interface_handler;
acpi_status status;
u32 return_value;
ACPI_FUNCTION_TRACE(ut_osi_implementation);
@ -336,7 +347,10 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state * walk_state)
/* Default return value is 0, NOT SUPPORTED */
return_value = 0;
(void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Lookup the interface in the global _OSI list */

17
drivers/acpi/acpica/utxface.c
View File

@ -287,7 +287,10 @@ acpi_status acpi_install_interface(acpi_string interface_name)
return (AE_BAD_PARAMETER);
}
(void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Check if the interface name is already in the global list */
@ -336,7 +339,10 @@ acpi_status acpi_remove_interface(acpi_string interface_name)
return (AE_BAD_PARAMETER);
}
(void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
return (status);
}
status = acpi_ut_remove_interface(interface_name);
@ -362,9 +368,12 @@ ACPI_EXPORT_SYMBOL(acpi_remove_interface)
****************************************************************************/
acpi_status acpi_install_interface_handler(acpi_interface_handler handler)
{
acpi_status status = AE_OK;
acpi_status status;
(void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
if (ACPI_FAILURE(status)) {
return (status);
}
if (handler && acpi_gbl_interface_handler) {
status = AE_ALREADY_EXISTS;