diff options
Diffstat (limited to 'drivers/acpi/utilities/utmutex.c')
| -rw-r--r-- | drivers/acpi/utilities/utmutex.c | 220 |
1 files changed, 97 insertions, 123 deletions
diff --git a/drivers/acpi/utilities/utmutex.c b/drivers/acpi/utilities/utmutex.c index 0699b6be62b6..90134c56ece9 100644 --- a/drivers/acpi/utilities/utmutex.c +++ b/drivers/acpi/utilities/utmutex.c @@ -41,22 +41,15 @@ * POSSIBILITY OF SUCH DAMAGES. */ - #include <acpi/acpi.h> #define _COMPONENT ACPI_UTILITIES - ACPI_MODULE_NAME ("utmutex") +ACPI_MODULE_NAME("utmutex") /* Local prototypes */ +static acpi_status acpi_ut_create_mutex(acpi_mutex_handle mutex_id); -static acpi_status -acpi_ut_create_mutex ( - acpi_mutex_handle mutex_id); - -static acpi_status -acpi_ut_delete_mutex ( - acpi_mutex_handle mutex_id); - +static acpi_status acpi_ut_delete_mutex(acpi_mutex_handle mutex_id); /******************************************************************************* * @@ -70,32 +63,27 @@ acpi_ut_delete_mutex ( * ******************************************************************************/ -acpi_status -acpi_ut_mutex_initialize ( - void) +acpi_status acpi_ut_mutex_initialize(void) { - u32 i; - acpi_status status; - - - ACPI_FUNCTION_TRACE ("ut_mutex_initialize"); + u32 i; + acpi_status status; + ACPI_FUNCTION_TRACE("ut_mutex_initialize"); /* * Create each of the predefined mutex objects */ for (i = 0; i < NUM_MUTEX; i++) { - status = acpi_ut_create_mutex (i); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_create_mutex(i); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } } - status = acpi_os_create_lock (&acpi_gbl_gpe_lock); - return_ACPI_STATUS (status); + status = acpi_os_create_lock(&acpi_gbl_gpe_lock); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ut_mutex_terminate @@ -108,28 +96,23 @@ acpi_ut_mutex_initialize ( * ******************************************************************************/ -void -acpi_ut_mutex_terminate ( - void) +void acpi_ut_mutex_terminate(void) { - u32 i; - - - ACPI_FUNCTION_TRACE ("ut_mutex_terminate"); + u32 i; + ACPI_FUNCTION_TRACE("ut_mutex_terminate"); /* * Delete each predefined mutex object */ for (i = 0; i < NUM_MUTEX; i++) { - (void) acpi_ut_delete_mutex (i); + (void)acpi_ut_delete_mutex(i); } - acpi_os_delete_lock (acpi_gbl_gpe_lock); + acpi_os_delete_lock(acpi_gbl_gpe_lock); return_VOID; } - /******************************************************************************* * * FUNCTION: acpi_ut_create_mutex @@ -142,31 +125,28 @@ acpi_ut_mutex_terminate ( * ******************************************************************************/ -static acpi_status -acpi_ut_create_mutex ( - acpi_mutex_handle mutex_id) +static acpi_status acpi_ut_create_mutex(acpi_mutex_handle mutex_id) { - acpi_status status = AE_OK; - - - ACPI_FUNCTION_TRACE_U32 ("ut_create_mutex", mutex_id); + acpi_status status = AE_OK; + ACPI_FUNCTION_TRACE_U32("ut_create_mutex", mutex_id); if (mutex_id > MAX_MUTEX) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } if (!acpi_gbl_mutex_info[mutex_id].mutex) { - status = acpi_os_create_semaphore (1, 1, - &acpi_gbl_mutex_info[mutex_id].mutex); - acpi_gbl_mutex_info[mutex_id].thread_id = ACPI_MUTEX_NOT_ACQUIRED; + status = acpi_os_create_semaphore(1, 1, + &acpi_gbl_mutex_info + [mutex_id].mutex); + acpi_gbl_mutex_info[mutex_id].thread_id = + ACPI_MUTEX_NOT_ACQUIRED; acpi_gbl_mutex_info[mutex_id].use_count = 0; } - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ut_delete_mutex @@ -179,29 +159,24 @@ acpi_ut_create_mutex ( * ******************************************************************************/ -static acpi_status -acpi_ut_delete_mutex ( - acpi_mutex_handle mutex_id) +static acpi_status acpi_ut_delete_mutex(acpi_mutex_handle mutex_id) { - acpi_status status; - - - ACPI_FUNCTION_TRACE_U32 ("ut_delete_mutex", mutex_id); + acpi_status status; + ACPI_FUNCTION_TRACE_U32("ut_delete_mutex", mutex_id); if (mutex_id > MAX_MUTEX) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } - status = acpi_os_delete_semaphore (acpi_gbl_mutex_info[mutex_id].mutex); + status = acpi_os_delete_semaphore(acpi_gbl_mutex_info[mutex_id].mutex); acpi_gbl_mutex_info[mutex_id].mutex = NULL; acpi_gbl_mutex_info[mutex_id].thread_id = ACPI_MUTEX_NOT_ACQUIRED; - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ut_acquire_mutex @@ -214,26 +189,22 @@ acpi_ut_delete_mutex ( * ******************************************************************************/ -acpi_status -acpi_ut_acquire_mutex ( - acpi_mutex_handle mutex_id) +acpi_status acpi_ut_acquire_mutex(acpi_mutex_handle mutex_id) { - acpi_status status; - u32 this_thread_id; - - - ACPI_FUNCTION_NAME ("ut_acquire_mutex"); + acpi_status status; + u32 this_thread_id; + ACPI_FUNCTION_NAME("ut_acquire_mutex"); if (mutex_id > MAX_MUTEX) { return (AE_BAD_PARAMETER); } - this_thread_id = acpi_os_get_thread_id (); + this_thread_id = acpi_os_get_thread_id(); #ifdef ACPI_MUTEX_DEBUG { - u32 i; + u32 i; /* * Mutex debug code, for internal debugging only. * @@ -245,17 +216,21 @@ acpi_ut_acquire_mutex ( for (i = mutex_id; i < MAX_MUTEX; i++) { if (acpi_gbl_mutex_info[i].owner_id == this_thread_id) { if (i == mutex_id) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Mutex [%s] already acquired by this thread [%X]\n", - acpi_ut_get_mutex_name (mutex_id), this_thread_id)); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Mutex [%s] already acquired by this thread [%X]\n", + acpi_ut_get_mutex_name + (mutex_id), + this_thread_id)); return (AE_ALREADY_ACQUIRED); } - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Invalid acquire order: Thread %X owns [%s], wants [%s]\n", - this_thread_id, acpi_ut_get_mutex_name (i), - acpi_ut_get_mutex_name (mutex_id))); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Invalid acquire order: Thread %X owns [%s], wants [%s]\n", + this_thread_id, + acpi_ut_get_mutex_name(i), + acpi_ut_get_mutex_name + (mutex_id))); return (AE_ACQUIRE_DEADLOCK); } @@ -263,30 +238,31 @@ acpi_ut_acquire_mutex ( } #endif - ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, - "Thread %X attempting to acquire Mutex [%s]\n", - this_thread_id, acpi_ut_get_mutex_name (mutex_id))); + ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, + "Thread %X attempting to acquire Mutex [%s]\n", + this_thread_id, acpi_ut_get_mutex_name(mutex_id))); - status = acpi_os_wait_semaphore (acpi_gbl_mutex_info[mutex_id].mutex, - 1, ACPI_WAIT_FOREVER); - if (ACPI_SUCCESS (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, "Thread %X acquired Mutex [%s]\n", - this_thread_id, acpi_ut_get_mutex_name (mutex_id))); + status = acpi_os_wait_semaphore(acpi_gbl_mutex_info[mutex_id].mutex, + 1, ACPI_WAIT_FOREVER); + if (ACPI_SUCCESS(status)) { + ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, + "Thread %X acquired Mutex [%s]\n", + this_thread_id, + acpi_ut_get_mutex_name(mutex_id))); acpi_gbl_mutex_info[mutex_id].use_count++; acpi_gbl_mutex_info[mutex_id].thread_id = this_thread_id; - } - else { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Thread %X could not acquire Mutex [%s] %s\n", - this_thread_id, acpi_ut_get_mutex_name (mutex_id), - acpi_format_exception (status))); + } else { + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Thread %X could not acquire Mutex [%s] %s\n", + this_thread_id, + acpi_ut_get_mutex_name(mutex_id), + acpi_format_exception(status))); } return (status); } - /******************************************************************************* * * FUNCTION: acpi_ut_release_mutex @@ -299,21 +275,17 @@ acpi_ut_acquire_mutex ( * ******************************************************************************/ -acpi_status -acpi_ut_release_mutex ( - acpi_mutex_handle mutex_id) +acpi_status acpi_ut_release_mutex(acpi_mutex_handle mutex_id) { - acpi_status status; - u32 this_thread_id; - + acpi_status status; + u32 this_thread_id; - ACPI_FUNCTION_NAME ("ut_release_mutex"); + ACPI_FUNCTION_NAME("ut_release_mutex"); - - this_thread_id = acpi_os_get_thread_id (); - ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, - "Thread %X releasing Mutex [%s]\n", this_thread_id, - acpi_ut_get_mutex_name (mutex_id))); + this_thread_id = acpi_os_get_thread_id(); + ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, + "Thread %X releasing Mutex [%s]\n", this_thread_id, + acpi_ut_get_mutex_name(mutex_id))); if (mutex_id > MAX_MUTEX) { return (AE_BAD_PARAMETER); @@ -323,16 +295,15 @@ acpi_ut_release_mutex ( * Mutex must be acquired in order to release it! */ if (acpi_gbl_mutex_info[mutex_id].thread_id == ACPI_MUTEX_NOT_ACQUIRED) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Mutex [%s] is not acquired, cannot release\n", - acpi_ut_get_mutex_name (mutex_id))); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Mutex [%s] is not acquired, cannot release\n", + acpi_ut_get_mutex_name(mutex_id))); return (AE_NOT_ACQUIRED); } - #ifdef ACPI_MUTEX_DEBUG { - u32 i; + u32 i; /* * Mutex debug code, for internal debugging only. * @@ -347,9 +318,11 @@ acpi_ut_release_mutex ( continue; } - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Invalid release order: owns [%s], releasing [%s]\n", - acpi_ut_get_mutex_name (i), acpi_ut_get_mutex_name (mutex_id))); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Invalid release order: owns [%s], releasing [%s]\n", + acpi_ut_get_mutex_name(i), + acpi_ut_get_mutex_name + (mutex_id))); return (AE_RELEASE_DEADLOCK); } @@ -361,20 +334,21 @@ acpi_ut_release_mutex ( acpi_gbl_mutex_info[mutex_id].thread_id = ACPI_MUTEX_NOT_ACQUIRED; - status = acpi_os_signal_semaphore (acpi_gbl_mutex_info[mutex_id].mutex, 1); - - if (ACPI_FAILURE (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Thread %X could not release Mutex [%s] %s\n", - this_thread_id, acpi_ut_get_mutex_name (mutex_id), - acpi_format_exception (status))); - } - else { - ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, "Thread %X released Mutex [%s]\n", - this_thread_id, acpi_ut_get_mutex_name (mutex_id))); + status = + acpi_os_signal_semaphore(acpi_gbl_mutex_info[mutex_id].mutex, 1); + + if (ACPI_FAILURE(status)) { + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Thread %X could not release Mutex [%s] %s\n", + this_thread_id, + acpi_ut_get_mutex_name(mutex_id), + acpi_format_exception(status))); + } else { + ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, + "Thread %X released Mutex [%s]\n", + this_thread_id, + acpi_ut_get_mutex_name(mutex_id))); } return (status); } - - |