diff options
Diffstat (limited to 'drivers/acpi')
-rw-r--r-- | drivers/acpi/acpica/acglobal.h | 4 | ||||
-rw-r--r-- | drivers/acpi/acpica/evgpe.c | 4 | ||||
-rw-r--r-- | drivers/acpi/acpica/evgpeblk.c | 8 | ||||
-rw-r--r-- | drivers/acpi/acpica/evgpeutil.c | 12 | ||||
-rw-r--r-- | drivers/acpi/acpica/evxface.c | 10 | ||||
-rw-r--r-- | drivers/acpi/acpica/evxfgpe.c | 24 | ||||
-rw-r--r-- | drivers/acpi/acpica/hwregs.c | 4 | ||||
-rw-r--r-- | drivers/acpi/acpica/hwxface.c | 4 | ||||
-rw-r--r-- | drivers/acpi/acpica/utmutex.c | 21 | ||||
-rw-r--r-- | drivers/acpi/ec.c | 30 | ||||
-rw-r--r-- | drivers/acpi/internal.h | 6 |
11 files changed, 57 insertions, 70 deletions
diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h index 76dc02f15574..bd6f099aeddc 100644 --- a/drivers/acpi/acpica/acglobal.h +++ b/drivers/acpi/acpica/acglobal.h @@ -235,8 +235,8 @@ ACPI_EXTERN u8 acpi_gbl_global_lock_pending; * Spinlocks are used for interfaces that can be possibly called at * interrupt level */ -ACPI_EXTERN acpi_spinlock acpi_gbl_gpe_lock; /* For GPE data structs and registers */ -ACPI_EXTERN acpi_spinlock acpi_gbl_hardware_lock; /* For ACPI H/W except GPE registers */ +extern raw_spinlock_t acpi_gbl_gpe_lock; /* For GPE data structs and registers */ +extern raw_spinlock_t acpi_gbl_hardware_lock; /* For ACPI H/W except GPE registers */ /***************************************************************************** * diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c index 65c79add3b19..36e7e1035faf 100644 --- a/drivers/acpi/acpica/evgpe.c +++ b/drivers/acpi/acpica/evgpe.c @@ -357,7 +357,7 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list) * Note: Not necessary to obtain the hardware lock, since the GPE * registers are owned by the gpe_lock. */ - flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + raw_spin_lock_irqsave(&acpi_gbl_gpe_lock, flags); /* Examine all GPE blocks attached to this interrupt level */ @@ -440,7 +440,7 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list) unlock_and_exit: - acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + raw_spin_unlock_irqrestore(&acpi_gbl_gpe_lock, flags); return (int_status); } diff --git a/drivers/acpi/acpica/evgpeblk.c b/drivers/acpi/acpica/evgpeblk.c index ca2c41a53311..60c47b9d2c15 100644 --- a/drivers/acpi/acpica/evgpeblk.c +++ b/drivers/acpi/acpica/evgpeblk.c @@ -95,7 +95,7 @@ acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block, /* Install the new block at the end of the list with lock */ - flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + raw_spin_lock_irqsave(&acpi_gbl_gpe_lock, flags); if (gpe_xrupt_block->gpe_block_list_head) { next_gpe_block = gpe_xrupt_block->gpe_block_list_head; while (next_gpe_block->next) { @@ -109,7 +109,7 @@ acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block, } gpe_block->xrupt_block = gpe_xrupt_block; - acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + raw_spin_unlock_irqrestore(&acpi_gbl_gpe_lock, flags); unlock_and_exit: status = acpi_ut_release_mutex(ACPI_MTX_EVENTS); @@ -156,7 +156,7 @@ acpi_status acpi_ev_delete_gpe_block(struct acpi_gpe_block_info *gpe_block) } else { /* Remove the block on this interrupt with lock */ - flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + raw_spin_lock_irqsave(&acpi_gbl_gpe_lock, flags); if (gpe_block->previous) { gpe_block->previous->next = gpe_block->next; } else { @@ -167,7 +167,7 @@ acpi_status acpi_ev_delete_gpe_block(struct acpi_gpe_block_info *gpe_block) if (gpe_block->next) { gpe_block->next->previous = gpe_block->previous; } - acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + raw_spin_unlock_irqrestore(&acpi_gbl_gpe_lock, flags); } acpi_current_gpe_count -= gpe_block->gpe_count; diff --git a/drivers/acpi/acpica/evgpeutil.c b/drivers/acpi/acpica/evgpeutil.c index 80a81d0c4a80..895b68abbd13 100644 --- a/drivers/acpi/acpica/evgpeutil.c +++ b/drivers/acpi/acpica/evgpeutil.c @@ -70,7 +70,7 @@ acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback, void *context) ACPI_FUNCTION_TRACE(ev_walk_gpe_list); - flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + raw_spin_lock_irqsave(&acpi_gbl_gpe_lock, flags); /* Walk the interrupt level descriptor list */ @@ -101,7 +101,7 @@ acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback, void *context) } unlock_and_exit: - acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + raw_spin_unlock_irqrestore(&acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); } @@ -237,7 +237,7 @@ struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 interrupt_number) /* Install new interrupt descriptor with spin lock */ - flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + raw_spin_lock_irqsave(&acpi_gbl_gpe_lock, flags); if (acpi_gbl_gpe_xrupt_list_head) { next_gpe_xrupt = acpi_gbl_gpe_xrupt_list_head; while (next_gpe_xrupt->next) { @@ -249,7 +249,7 @@ struct acpi_gpe_xrupt_info *acpi_ev_get_gpe_xrupt_block(u32 interrupt_number) } else { acpi_gbl_gpe_xrupt_list_head = gpe_xrupt; } - acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + raw_spin_unlock_irqrestore(&acpi_gbl_gpe_lock, flags); /* Install new interrupt handler if not SCI_INT */ @@ -306,7 +306,7 @@ acpi_status acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt) /* Unlink the interrupt block with lock */ - flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + raw_spin_lock_irqsave(&acpi_gbl_gpe_lock, flags); if (gpe_xrupt->previous) { gpe_xrupt->previous->next = gpe_xrupt->next; } else { @@ -318,7 +318,7 @@ acpi_status acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt) if (gpe_xrupt->next) { gpe_xrupt->next->previous = gpe_xrupt->previous; } - acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + raw_spin_unlock_irqrestore(&acpi_gbl_gpe_lock, flags); /* Free the block */ diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c index f4f523bf5939..6bb0040ca967 100644 --- a/drivers/acpi/acpica/evxface.c +++ b/drivers/acpi/acpica/evxface.c @@ -751,7 +751,7 @@ acpi_install_gpe_handler(acpi_handle gpe_device, goto unlock_and_exit; } - flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + raw_spin_lock_irqsave(&acpi_gbl_gpe_lock, flags); /* Ensure that we have a valid GPE number */ @@ -799,14 +799,14 @@ acpi_install_gpe_handler(acpi_handle gpe_device, ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK); gpe_event_info->flags |= (u8) (type | ACPI_GPE_DISPATCH_HANDLER); - acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + raw_spin_unlock_irqrestore(&acpi_gbl_gpe_lock, flags); unlock_and_exit: (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); return_ACPI_STATUS(status); free_and_exit: - acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + raw_spin_unlock_irqrestore(&acpi_gbl_gpe_lock, flags); ACPI_FREE(handler); goto unlock_and_exit; } @@ -853,7 +853,7 @@ acpi_remove_gpe_handler(acpi_handle gpe_device, return_ACPI_STATUS(status); } - flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + raw_spin_lock_irqsave(&acpi_gbl_gpe_lock, flags); /* Ensure that we have a valid GPE number */ @@ -904,7 +904,7 @@ acpi_remove_gpe_handler(acpi_handle gpe_device, ACPI_FREE(handler); unlock_and_exit: - acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + raw_spin_unlock_irqrestore(&acpi_gbl_gpe_lock, flags); (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); return_ACPI_STATUS(status); diff --git a/drivers/acpi/acpica/evxfgpe.c b/drivers/acpi/acpica/evxfgpe.c index f06a3ee356ba..f9acdb6b4263 100644 --- a/drivers/acpi/acpica/evxfgpe.c +++ b/drivers/acpi/acpica/evxfgpe.c @@ -122,7 +122,7 @@ acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number) ACPI_FUNCTION_TRACE(acpi_enable_gpe); - flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + raw_spin_lock_irqsave(&acpi_gbl_gpe_lock, flags); /* Ensure that we have a valid GPE number */ @@ -131,7 +131,7 @@ acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number) status = acpi_ev_add_gpe_reference(gpe_event_info); } - acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + raw_spin_unlock_irqrestore(&acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); } ACPI_EXPORT_SYMBOL(acpi_enable_gpe) @@ -159,7 +159,7 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number) ACPI_FUNCTION_TRACE(acpi_disable_gpe); - flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + raw_spin_lock_irqsave(&acpi_gbl_gpe_lock, flags); /* Ensure that we have a valid GPE number */ @@ -168,7 +168,7 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number) status = acpi_ev_remove_gpe_reference(gpe_event_info) ; } - acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + raw_spin_unlock_irqrestore(&acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); } ACPI_EXPORT_SYMBOL(acpi_disable_gpe) @@ -215,7 +215,7 @@ acpi_setup_gpe_for_wake(acpi_handle wake_device, return_ACPI_STATUS(AE_BAD_PARAMETER); } - flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + raw_spin_lock_irqsave(&acpi_gbl_gpe_lock, flags); /* Ensure that we have a valid GPE number */ @@ -271,7 +271,7 @@ acpi_setup_gpe_for_wake(acpi_handle wake_device, status = AE_OK; unlock_and_exit: - acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + raw_spin_unlock_irqrestore(&acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); } ACPI_EXPORT_SYMBOL(acpi_setup_gpe_for_wake) @@ -301,7 +301,7 @@ acpi_status acpi_set_gpe_wake_mask(acpi_handle gpe_device, u32 gpe_number, u8 ac ACPI_FUNCTION_TRACE(acpi_set_gpe_wake_mask); - flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + raw_spin_lock_irqsave(&acpi_gbl_gpe_lock, flags); /* * Ensure that we have a valid GPE number and that this GPE is in @@ -347,7 +347,7 @@ acpi_status acpi_set_gpe_wake_mask(acpi_handle gpe_device, u32 gpe_number, u8 ac } unlock_and_exit: - acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + raw_spin_unlock_irqrestore(&acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); } @@ -373,7 +373,7 @@ acpi_status acpi_clear_gpe(acpi_handle gpe_device, u32 gpe_number) ACPI_FUNCTION_TRACE(acpi_clear_gpe); - flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + raw_spin_lock_irqsave(&acpi_gbl_gpe_lock, flags); /* Ensure that we have a valid GPE number */ @@ -386,7 +386,7 @@ acpi_status acpi_clear_gpe(acpi_handle gpe_device, u32 gpe_number) status = acpi_hw_clear_gpe(gpe_event_info); unlock_and_exit: - acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + raw_spin_unlock_irqrestore(&acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); } @@ -416,7 +416,7 @@ acpi_get_gpe_status(acpi_handle gpe_device, ACPI_FUNCTION_TRACE(acpi_get_gpe_status); - flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + raw_spin_lock_irqsave(&acpi_gbl_gpe_lock, flags); /* Ensure that we have a valid GPE number */ @@ -434,7 +434,7 @@ acpi_get_gpe_status(acpi_handle gpe_device, *event_status |= ACPI_EVENT_FLAG_HANDLE; unlock_and_exit: - acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + raw_spin_unlock_irqrestore(&acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); } diff --git a/drivers/acpi/acpica/hwregs.c b/drivers/acpi/acpica/hwregs.c index cc70f3fdcdd1..7bb3c906324f 100644 --- a/drivers/acpi/acpica/hwregs.c +++ b/drivers/acpi/acpica/hwregs.c @@ -263,14 +263,14 @@ acpi_status acpi_hw_clear_acpi_status(void) ACPI_BITMASK_ALL_FIXED_STATUS, ACPI_FORMAT_UINT64(acpi_gbl_xpm1a_status.address))); - lock_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock); + raw_spin_lock_irqsave(&acpi_gbl_hardware_lock, lock_flags); /* Clear the fixed events in PM1 A/B */ status = acpi_hw_register_write(ACPI_REGISTER_PM1_STATUS, ACPI_BITMASK_ALL_FIXED_STATUS); - acpi_os_release_lock(acpi_gbl_hardware_lock, lock_flags); + raw_spin_unlock_irqrestore(&acpi_gbl_hardware_lock, lock_flags); if (ACPI_FAILURE(status)) goto exit; diff --git a/drivers/acpi/acpica/hwxface.c b/drivers/acpi/acpica/hwxface.c index c2793a82f120..43efc3afe0d6 100644 --- a/drivers/acpi/acpica/hwxface.c +++ b/drivers/acpi/acpica/hwxface.c @@ -387,7 +387,7 @@ acpi_status acpi_write_bit_register(u32 register_id, u32 value) return_ACPI_STATUS(AE_BAD_PARAMETER); } - lock_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock); + raw_spin_lock_irqsave(&acpi_gbl_hardware_lock, lock_flags); /* * At this point, we know that the parent register is one of the @@ -448,7 +448,7 @@ acpi_status acpi_write_bit_register(u32 register_id, u32 value) unlock_and_exit: - acpi_os_release_lock(acpi_gbl_hardware_lock, lock_flags); + raw_spin_unlock_irqrestore(&acpi_gbl_hardware_lock, lock_flags); return_ACPI_STATUS(status); } diff --git a/drivers/acpi/acpica/utmutex.c b/drivers/acpi/acpica/utmutex.c index 7d797e2baecd..420eecf5faa7 100644 --- a/drivers/acpi/acpica/utmutex.c +++ b/drivers/acpi/acpica/utmutex.c @@ -52,6 +52,9 @@ static acpi_status acpi_ut_create_mutex(acpi_mutex_handle mutex_id); static void acpi_ut_delete_mutex(acpi_mutex_handle mutex_id); +DEFINE_RAW_SPINLOCK(acpi_gbl_gpe_lock); +DEFINE_RAW_SPINLOCK(acpi_gbl_hardware_lock); + /******************************************************************************* * * FUNCTION: acpi_ut_mutex_initialize @@ -81,18 +84,6 @@ acpi_status acpi_ut_mutex_initialize(void) } } - /* Create the spinlocks for use at interrupt level */ - - status = acpi_os_create_lock (&acpi_gbl_gpe_lock); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); - } - - status = acpi_os_create_lock (&acpi_gbl_hardware_lock); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); - } - /* Mutex for _OSI support */ status = acpi_os_create_mutex(&acpi_gbl_osi_mutex); if (ACPI_FAILURE(status)) { @@ -132,13 +123,7 @@ void acpi_ut_mutex_terminate(void) acpi_os_delete_mutex(acpi_gbl_osi_mutex); - /* Delete the spinlocks */ - - acpi_os_delete_lock(acpi_gbl_gpe_lock); - acpi_os_delete_lock(acpi_gbl_hardware_lock); - /* Delete the reader/writer lock */ - acpi_ut_delete_rw_lock(&acpi_gbl_namespace_rw_lock); return_VOID; } diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index b19a18dd994f..db0e6c3b28fd 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -152,10 +152,10 @@ static int ec_transaction_done(struct acpi_ec *ec) { unsigned long flags; int ret = 0; - spin_lock_irqsave(&ec->curr_lock, flags); + raw_spin_lock_irqsave(&ec->curr_lock, flags); if (!ec->curr || ec->curr->done) ret = 1; - spin_unlock_irqrestore(&ec->curr_lock, flags); + raw_spin_unlock_irqrestore(&ec->curr_lock, flags); return ret; } @@ -169,7 +169,7 @@ static void start_transaction(struct acpi_ec *ec) static void advance_transaction(struct acpi_ec *ec, u8 status) { unsigned long flags; - spin_lock_irqsave(&ec->curr_lock, flags); + raw_spin_lock_irqsave(&ec->curr_lock, flags); if (!ec->curr) goto unlock; if (ec->curr->wlen > ec->curr->wi) { @@ -194,7 +194,7 @@ err: if (in_interrupt()) ++ec->curr->irq_count; unlock: - spin_unlock_irqrestore(&ec->curr_lock, flags); + raw_spin_unlock_irqrestore(&ec->curr_lock, flags); } static int acpi_ec_sync_query(struct acpi_ec *ec); @@ -222,7 +222,7 @@ static int ec_poll(struct acpi_ec *ec) if (ec_transaction_done(ec)) return 0; } else { - if (wait_event_timeout(ec->wait, + if (swait_event_timeout(ec->wait, ec_transaction_done(ec), msecs_to_jiffies(1))) return 0; @@ -232,9 +232,9 @@ static int ec_poll(struct acpi_ec *ec) if (acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF) break; pr_debug(PREFIX "controller reset, restart transaction\n"); - spin_lock_irqsave(&ec->curr_lock, flags); + raw_spin_lock_irqsave(&ec->curr_lock, flags); start_transaction(ec); - spin_unlock_irqrestore(&ec->curr_lock, flags); + raw_spin_unlock_irqrestore(&ec->curr_lock, flags); } return -ETIME; } @@ -247,17 +247,17 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, if (EC_FLAGS_MSI) udelay(ACPI_EC_MSI_UDELAY); /* start transaction */ - spin_lock_irqsave(&ec->curr_lock, tmp); + raw_spin_lock_irqsave(&ec->curr_lock, tmp); /* following two actions should be kept atomic */ ec->curr = t; start_transaction(ec); if (ec->curr->command == ACPI_EC_COMMAND_QUERY) clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags); - spin_unlock_irqrestore(&ec->curr_lock, tmp); + raw_spin_unlock_irqrestore(&ec->curr_lock, tmp); ret = ec_poll(ec); - spin_lock_irqsave(&ec->curr_lock, tmp); + raw_spin_lock_irqsave(&ec->curr_lock, tmp); ec->curr = NULL; - spin_unlock_irqrestore(&ec->curr_lock, tmp); + raw_spin_unlock_irqrestore(&ec->curr_lock, tmp); return ret; } @@ -272,7 +272,7 @@ static int ec_wait_ibf0(struct acpi_ec *ec) unsigned long delay = jiffies + msecs_to_jiffies(ec_delay); /* interrupt wait manually if GPE mode is not active */ while (time_before(jiffies, delay)) - if (wait_event_timeout(ec->wait, ec_check_ibf0(ec), + if (swait_event_timeout(ec->wait, ec_check_ibf0(ec), msecs_to_jiffies(1))) return 0; return -ETIME; @@ -612,7 +612,7 @@ static u32 acpi_ec_gpe_handler(acpi_handle gpe_device, advance_transaction(ec, acpi_ec_read_status(ec)); if (ec_transaction_done(ec) && (acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF) == 0) { - wake_up(&ec->wait); + swait_wake(&ec->wait); ec_check_sci(ec, acpi_ec_read_status(ec)); } return ACPI_INTERRUPT_HANDLED | ACPI_REENABLE_GPE; @@ -676,9 +676,9 @@ static struct acpi_ec *make_acpi_ec(void) return NULL; ec->flags = 1 << EC_FLAGS_QUERY_PENDING; mutex_init(&ec->lock); - init_waitqueue_head(&ec->wait); + init_swait_head(&ec->wait); INIT_LIST_HEAD(&ec->list); - spin_lock_init(&ec->curr_lock); + raw_spin_lock_init(&ec->curr_lock); return ec; } diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index ca75b9ce0489..2519b6ec2666 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -23,6 +23,8 @@ #define PREFIX "ACPI: " +#include <linux/wait-simple.h> + int init_acpi_device_notify(void); int acpi_scan_init(void); int acpi_sysfs_init(void); @@ -59,10 +61,10 @@ struct acpi_ec { unsigned long global_lock; unsigned long flags; struct mutex lock; - wait_queue_head_t wait; + struct swait_head wait; struct list_head list; struct transaction *curr; - spinlock_t curr_lock; + raw_spinlock_t curr_lock; }; extern struct acpi_ec *first_ec; |