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path: root/drivers/acpi/ec.c
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Diffstat (limited to 'drivers/acpi/ec.c')
-rw-r--r--drivers/acpi/ec.c238
1 files changed, 108 insertions, 130 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index eee0864ba300..8c5d7df7d343 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -116,7 +116,7 @@ union acpi_ec {
struct acpi_generic_address command_addr;
struct acpi_generic_address data_addr;
unsigned long global_lock;
- spinlock_t lock;
+ struct semaphore sem;
} poll;
};
@@ -207,16 +207,15 @@ static int acpi_ec_intr_wait(union acpi_ec *ec, unsigned int event)
{
int result = 0;
- ACPI_FUNCTION_TRACE("acpi_ec_wait");
ec->intr.expect_event = event;
smp_mb();
switch (event) {
case ACPI_EC_EVENT_IBE:
- if (~acpi_ec_read_status(ec) & event) {
+ if (~acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF) {
ec->intr.expect_event = 0;
- return_VALUE(0);
+ return 0;
}
break;
default:
@@ -238,16 +237,16 @@ static int acpi_ec_intr_wait(union acpi_ec *ec, unsigned int event)
switch (event) {
case ACPI_EC_EVENT_OBF:
if (acpi_ec_read_status(ec) & ACPI_EC_FLAG_OBF)
- return_VALUE(0);
+ return 0;
break;
case ACPI_EC_EVENT_IBE:
if (~acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF)
- return_VALUE(0);
+ return 0;
break;
}
- return_VALUE(-ETIME);
+ return -ETIME;
}
#ifdef ACPI_FUTURE_USAGE
@@ -260,7 +259,6 @@ int acpi_ec_enter_burst_mode(union acpi_ec *ec)
u32 tmp = 0;
int status = 0;
- ACPI_FUNCTION_TRACE("acpi_ec_enter_burst_mode");
status = acpi_ec_read_status(ec);
if (status != -EINVAL && !(status & ACPI_EC_FLAG_BURST)) {
@@ -272,22 +270,21 @@ int acpi_ec_enter_burst_mode(union acpi_ec *ec)
status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF);
acpi_hw_low_level_read(8, &tmp, &ec->common.data_addr);
if (tmp != 0x90) { /* Burst ACK byte */
- return_VALUE(-EINVAL);
+ return -EINVAL;
}
}
atomic_set(&ec->intr.leaving_burst, 0);
- return_VALUE(0);
+ return 0;
end:
- printk(KERN_WARNING PREFIX "Error in acpi_ec_wait\n");
- return_VALUE(-1);
+ ACPI_EXCEPTION ((AE_INFO, status, "EC wait, burst mode");
+ return -1;
}
int acpi_ec_leave_burst_mode(union acpi_ec *ec)
{
int status = 0;
- ACPI_FUNCTION_TRACE("acpi_ec_leave_burst_mode");
status = acpi_ec_read_status(ec);
if (status != -EINVAL && (status & ACPI_EC_FLAG_BURST)){
@@ -298,10 +295,10 @@ int acpi_ec_leave_burst_mode(union acpi_ec *ec)
acpi_ec_wait(ec, ACPI_EC_FLAG_IBF);
}
atomic_set(&ec->intr.leaving_burst, 1);
- return_VALUE(0);
+ return 0;
end:
- printk(KERN_WARNING PREFIX "leave burst_mode:error\n");
- return_VALUE(-1);
+ ACPI_EXCEPTION((AE_INFO, status, "EC leave burst mode");
+ return -1;
}
#endif /* ACPI_FUTURE_USAGE */
@@ -323,24 +320,25 @@ static int acpi_ec_poll_read(union acpi_ec *ec, u8 address, u32 * data)
{
acpi_status status = AE_OK;
int result = 0;
- unsigned long flags = 0;
u32 glk = 0;
- ACPI_FUNCTION_TRACE("acpi_ec_read");
if (!ec || !data)
- return_VALUE(-EINVAL);
+ return -EINVAL;
*data = 0;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
- spin_lock_irqsave(&ec->poll.lock, flags);
-
+ if (down_interruptible(&ec->poll.sem)) {
+ result = -ERESTARTSYS;
+ goto end_nosem;
+ }
+
acpi_hw_low_level_write(8, ACPI_EC_COMMAND_READ,
&ec->common.command_addr);
result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
@@ -358,34 +356,35 @@ static int acpi_ec_poll_read(union acpi_ec *ec, u8 address, u32 * data)
*data, address));
end:
- spin_unlock_irqrestore(&ec->poll.lock, flags);
-
+ up(&ec->poll.sem);
+end_nosem:
if (ec->common.global_lock)
acpi_release_global_lock(glk);
- return_VALUE(result);
+ return result;
}
static int acpi_ec_poll_write(union acpi_ec *ec, u8 address, u8 data)
{
int result = 0;
acpi_status status = AE_OK;
- unsigned long flags = 0;
u32 glk = 0;
- ACPI_FUNCTION_TRACE("acpi_ec_write");
if (!ec)
- return_VALUE(-EINVAL);
+ return -EINVAL;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
- spin_lock_irqsave(&ec->poll.lock, flags);
-
+ if (down_interruptible(&ec->poll.sem)) {
+ result = -ERESTARTSYS;
+ goto end_nosem;
+ }
+
acpi_hw_low_level_write(8, ACPI_EC_COMMAND_WRITE,
&ec->common.command_addr);
result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBE);
@@ -406,12 +405,12 @@ static int acpi_ec_poll_write(union acpi_ec *ec, u8 address, u8 data)
data, address));
end:
- spin_unlock_irqrestore(&ec->poll.lock, flags);
-
+ up(&ec->poll.sem);
+end_nosem:
if (ec->common.global_lock)
acpi_release_global_lock(glk);
- return_VALUE(result);
+ return result;
}
static int acpi_ec_intr_read(union acpi_ec *ec, u8 address, u32 * data)
@@ -419,17 +418,16 @@ static int acpi_ec_intr_read(union acpi_ec *ec, u8 address, u32 * data)
int status = 0;
u32 glk;
- ACPI_FUNCTION_TRACE("acpi_ec_read");
if (!ec || !data)
- return_VALUE(-EINVAL);
+ return -EINVAL;
*data = 0;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
WARN_ON(in_interrupt());
@@ -463,7 +461,7 @@ static int acpi_ec_intr_read(union acpi_ec *ec, u8 address, u32 * data)
if (ec->common.global_lock)
acpi_release_global_lock(glk);
- return_VALUE(status);
+ return status;
}
static int acpi_ec_intr_write(union acpi_ec *ec, u8 address, u8 data)
@@ -471,15 +469,14 @@ static int acpi_ec_intr_write(union acpi_ec *ec, u8 address, u8 data)
int status = 0;
u32 glk;
- ACPI_FUNCTION_TRACE("acpi_ec_write");
if (!ec)
- return_VALUE(-EINVAL);
+ return -EINVAL;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
WARN_ON(in_interrupt());
@@ -512,7 +509,7 @@ static int acpi_ec_intr_write(union acpi_ec *ec, u8 address, u8 data)
if (ec->common.global_lock)
acpi_release_global_lock(glk);
- return_VALUE(status);
+ return status;
}
/*
@@ -568,20 +565,18 @@ static int acpi_ec_poll_query(union acpi_ec *ec, u32 * data)
{
int result = 0;
acpi_status status = AE_OK;
- unsigned long flags = 0;
u32 glk = 0;
- ACPI_FUNCTION_TRACE("acpi_ec_query");
if (!ec || !data)
- return_VALUE(-EINVAL);
+ return -EINVAL;
*data = 0;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
/*
@@ -589,8 +584,11 @@ static int acpi_ec_poll_query(union acpi_ec *ec, u32 * data)
* Note that successful completion of the query causes the ACPI_EC_SCI
* bit to be cleared (and thus clearing the interrupt source).
*/
- spin_lock_irqsave(&ec->poll.lock, flags);
-
+ if (down_interruptible(&ec->poll.sem)) {
+ result = -ERESTARTSYS;
+ goto end_nosem;
+ }
+
acpi_hw_low_level_write(8, ACPI_EC_COMMAND_QUERY,
&ec->common.command_addr);
result = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF);
@@ -602,28 +600,27 @@ static int acpi_ec_poll_query(union acpi_ec *ec, u32 * data)
result = -ENODATA;
end:
- spin_unlock_irqrestore(&ec->poll.lock, flags);
-
+ up(&ec->poll.sem);
+end_nosem:
if (ec->common.global_lock)
acpi_release_global_lock(glk);
- return_VALUE(result);
+ return result;
}
static int acpi_ec_intr_query(union acpi_ec *ec, u32 * data)
{
int status = 0;
u32 glk;
- ACPI_FUNCTION_TRACE("acpi_ec_query");
if (!ec || !data)
- return_VALUE(-EINVAL);
+ return -EINVAL;
*data = 0;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
down(&ec->intr.sem);
@@ -656,7 +653,7 @@ static int acpi_ec_intr_query(union acpi_ec *ec, u32 * data)
if (ec->common.global_lock)
acpi_release_global_lock(glk);
- return_VALUE(status);
+ return status;
}
/* --------------------------------------------------------------------------
@@ -680,20 +677,20 @@ static void acpi_ec_gpe_poll_query(void *ec_cxt)
{
union acpi_ec *ec = (union acpi_ec *)ec_cxt;
u32 value = 0;
- unsigned long flags = 0;
static char object_name[5] = { '_', 'Q', '0', '0', '\0' };
const char hex[] = { '0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};
- ACPI_FUNCTION_TRACE("acpi_ec_gpe_query");
if (!ec_cxt)
goto end;
- spin_lock_irqsave(&ec->poll.lock, flags);
+ if (down_interruptible (&ec->poll.sem)) {
+ return;
+ }
acpi_hw_low_level_read(8, &value, &ec->common.command_addr);
- spin_unlock_irqrestore(&ec->poll.lock, flags);
+ up(&ec->poll.sem);
/* TBD: Implement asynch events!
* NOTE: All we care about are EC-SCI's. Other EC events are
@@ -727,7 +724,6 @@ static void acpi_ec_gpe_intr_query(void *ec_cxt)
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};
- ACPI_FUNCTION_TRACE("acpi_ec_gpe_query");
if (acpi_ec_read_status(ec) & ACPI_EC_FLAG_SCI)
result = acpi_ec_query(ec, &value);
@@ -763,8 +759,7 @@ static u32 acpi_ec_gpe_poll_handler(void *data)
acpi_disable_gpe(NULL, ec->common.gpe_bit, ACPI_ISR);
- status = acpi_os_queue_for_execution(OSD_PRIORITY_GPE,
- acpi_ec_gpe_query, ec);
+ status = acpi_os_execute(OSL_EC_POLL_HANDLER, acpi_ec_gpe_query, ec);
if (status == AE_OK)
return ACPI_INTERRUPT_HANDLED;
@@ -787,19 +782,22 @@ static u32 acpi_ec_gpe_intr_handler(void *data)
case ACPI_EC_EVENT_OBF:
if (!(value & ACPI_EC_FLAG_OBF))
break;
+ ec->intr.expect_event = 0;
+ wake_up(&ec->intr.wait);
+ break;
case ACPI_EC_EVENT_IBE:
if ((value & ACPI_EC_FLAG_IBF))
break;
ec->intr.expect_event = 0;
wake_up(&ec->intr.wait);
- return ACPI_INTERRUPT_HANDLED;
+ break;
default:
break;
}
if (value & ACPI_EC_FLAG_SCI) {
atomic_add(1, &ec->intr.pending_gpe);
- status = acpi_os_queue_for_execution(OSD_PRIORITY_GPE,
+ status = acpi_os_execute(OSL_EC_BURST_HANDLER,
acpi_ec_gpe_query, ec);
return status == AE_OK ?
ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED;
@@ -840,15 +838,14 @@ acpi_ec_space_handler(u32 function,
acpi_integer f_v = 0;
int i = 0;
- ACPI_FUNCTION_TRACE("acpi_ec_space_handler");
if ((address > 0xFF) || !value || !handler_context)
- return_VALUE(AE_BAD_PARAMETER);
+ return AE_BAD_PARAMETER;
if (bit_width != 8 && acpi_strict) {
printk(KERN_WARNING PREFIX
"acpi_ec_space_handler: bit_width should be 8\n");
- return_VALUE(AE_BAD_PARAMETER);
+ return AE_BAD_PARAMETER;
}
ec = (union acpi_ec *)handler_context;
@@ -887,16 +884,16 @@ acpi_ec_space_handler(u32 function,
out:
switch (result) {
case -EINVAL:
- return_VALUE(AE_BAD_PARAMETER);
+ return AE_BAD_PARAMETER;
break;
case -ENODEV:
- return_VALUE(AE_NOT_FOUND);
+ return AE_NOT_FOUND;
break;
case -ETIME:
- return_VALUE(AE_TIME);
+ return AE_TIME;
break;
default:
- return_VALUE(AE_OK);
+ return AE_OK;
}
}
@@ -910,7 +907,6 @@ static int acpi_ec_read_info(struct seq_file *seq, void *offset)
{
union acpi_ec *ec = (union acpi_ec *)seq->private;
- ACPI_FUNCTION_TRACE("acpi_ec_read_info");
if (!ec)
goto end;
@@ -925,7 +921,7 @@ static int acpi_ec_read_info(struct seq_file *seq, void *offset)
acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
end:
- return_VALUE(0);
+ return 0;
}
static int acpi_ec_info_open_fs(struct inode *inode, struct file *file)
@@ -945,33 +941,29 @@ static int acpi_ec_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
- ACPI_FUNCTION_TRACE("acpi_ec_add_fs");
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_ec_dir);
if (!acpi_device_dir(device))
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
entry = create_proc_entry(ACPI_EC_FILE_INFO, S_IRUGO,
acpi_device_dir(device));
if (!entry)
- ACPI_DEBUG_PRINT((ACPI_DB_WARN,
- "Unable to create '%s' fs entry\n",
- ACPI_EC_FILE_INFO));
+ return -ENODEV;
else {
entry->proc_fops = &acpi_ec_info_ops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
- return_VALUE(0);
+ return 0;
}
static int acpi_ec_remove_fs(struct acpi_device *device)
{
- ACPI_FUNCTION_TRACE("acpi_ec_remove_fs");
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_EC_FILE_INFO, acpi_device_dir(device));
@@ -979,7 +971,7 @@ static int acpi_ec_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
- return_VALUE(0);
+ return 0;
}
/* --------------------------------------------------------------------------
@@ -991,21 +983,19 @@ static int acpi_ec_poll_add(struct acpi_device *device)
int result = 0;
acpi_status status = AE_OK;
union acpi_ec *ec = NULL;
- unsigned long uid;
- ACPI_FUNCTION_TRACE("acpi_ec_add");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
ec = kmalloc(sizeof(union acpi_ec), GFP_KERNEL);
if (!ec)
- return_VALUE(-ENOMEM);
+ return -ENOMEM;
memset(ec, 0, sizeof(union acpi_ec));
ec->common.handle = device->handle;
ec->common.uid = -1;
- spin_lock_init(&ec->poll.lock);
+ init_MUTEX(&ec->poll.sem);
strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_EC_CLASS);
acpi_driver_data(device) = ec;
@@ -1014,10 +1004,9 @@ static int acpi_ec_poll_add(struct acpi_device *device)
acpi_evaluate_integer(ec->common.handle, "_GLK", NULL,
&ec->common.global_lock);
- /* If our UID matches the UID for the ECDT-enumerated EC,
- we now have the *real* EC info, so kill the makeshift one. */
- acpi_evaluate_integer(ec->common.handle, "_UID", NULL, &uid);
- if (ec_ecdt && ec_ecdt->common.uid == uid) {
+ /* XXX we don't test uids, because on some boxes ecdt uid = 0, see:
+ http://bugzilla.kernel.org/show_bug.cgi?id=6111 */
+ if (ec_ecdt) {
acpi_remove_address_space_handler(ACPI_ROOT_OBJECT,
ACPI_ADR_SPACE_EC,
&acpi_ec_space_handler);
@@ -1034,8 +1023,7 @@ static int acpi_ec_poll_add(struct acpi_device *device)
acpi_evaluate_integer(ec->common.handle, "_GPE", NULL,
&ec->common.gpe_bit);
if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Error obtaining GPE bit assignment\n"));
+ ACPI_EXCEPTION((AE_INFO, status, "Obtaining GPE bit"));
result = -ENODEV;
goto end;
}
@@ -1055,23 +1043,21 @@ static int acpi_ec_poll_add(struct acpi_device *device)
if (result)
kfree(ec);
- return_VALUE(result);
+ return result;
}
static int acpi_ec_intr_add(struct acpi_device *device)
{
int result = 0;
acpi_status status = AE_OK;
union acpi_ec *ec = NULL;
- unsigned long uid;
- ACPI_FUNCTION_TRACE("acpi_ec_add");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
ec = kmalloc(sizeof(union acpi_ec), GFP_KERNEL);
if (!ec)
- return_VALUE(-ENOMEM);
+ return -ENOMEM;
memset(ec, 0, sizeof(union acpi_ec));
ec->common.handle = device->handle;
@@ -1088,10 +1074,9 @@ static int acpi_ec_intr_add(struct acpi_device *device)
acpi_evaluate_integer(ec->common.handle, "_GLK", NULL,
&ec->common.global_lock);
- /* If our UID matches the UID for the ECDT-enumerated EC,
- we now have the *real* EC info, so kill the makeshift one. */
- acpi_evaluate_integer(ec->common.handle, "_UID", NULL, &uid);
- if (ec_ecdt && ec_ecdt->common.uid == uid) {
+ /* XXX we don't test uids, because on some boxes ecdt uid = 0, see:
+ http://bugzilla.kernel.org/show_bug.cgi?id=6111 */
+ if (ec_ecdt) {
acpi_remove_address_space_handler(ACPI_ROOT_OBJECT,
ACPI_ADR_SPACE_EC,
&acpi_ec_space_handler);
@@ -1108,8 +1093,7 @@ static int acpi_ec_intr_add(struct acpi_device *device)
acpi_evaluate_integer(ec->common.handle, "_GPE", NULL,
&ec->common.gpe_bit);
if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Error obtaining GPE bit assignment\n"));
+ printk(KERN_ERR PREFIX "Obtaining GPE bit assignment\n");
result = -ENODEV;
goto end;
}
@@ -1129,17 +1113,16 @@ static int acpi_ec_intr_add(struct acpi_device *device)
if (result)
kfree(ec);
- return_VALUE(result);
+ return result;
}
static int acpi_ec_remove(struct acpi_device *device, int type)
{
union acpi_ec *ec = NULL;
- ACPI_FUNCTION_TRACE("acpi_ec_remove");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
ec = acpi_driver_data(device);
@@ -1147,7 +1130,7 @@ static int acpi_ec_remove(struct acpi_device *device, int type)
kfree(ec);
- return_VALUE(0);
+ return 0;
}
static acpi_status
@@ -1186,15 +1169,14 @@ static int acpi_ec_start(struct acpi_device *device)
acpi_status status = AE_OK;
union acpi_ec *ec = NULL;
- ACPI_FUNCTION_TRACE("acpi_ec_start");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
ec = acpi_driver_data(device);
if (!ec)
- return_VALUE(-EINVAL);
+ return -EINVAL;
/*
* Get I/O port addresses. Convert to GAS format.
@@ -1203,9 +1185,8 @@ static int acpi_ec_start(struct acpi_device *device)
acpi_ec_io_ports, ec);
if (ACPI_FAILURE(status)
|| ec->common.command_addr.register_bit_width == 0) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Error getting I/O port addresses"));
- return_VALUE(-ENODEV);
+ printk(KERN_ERR PREFIX "Error getting I/O port addresses\n");
+ return -ENODEV;
}
ec->common.status_addr = ec->common.command_addr;
@@ -1222,7 +1203,7 @@ static int acpi_ec_start(struct acpi_device *device)
ACPI_GPE_EDGE_TRIGGERED,
&acpi_ec_gpe_handler, ec);
if (ACPI_FAILURE(status)) {
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
acpi_set_gpe_type(NULL, ec->common.gpe_bit, ACPI_GPE_TYPE_RUNTIME);
acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
@@ -1234,10 +1215,10 @@ static int acpi_ec_start(struct acpi_device *device)
if (ACPI_FAILURE(status)) {
acpi_remove_gpe_handler(NULL, ec->common.gpe_bit,
&acpi_ec_gpe_handler);
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
- return_VALUE(AE_OK);
+ return AE_OK;
}
static int acpi_ec_stop(struct acpi_device *device, int type)
@@ -1245,10 +1226,9 @@ static int acpi_ec_stop(struct acpi_device *device, int type)
acpi_status status = AE_OK;
union acpi_ec *ec = NULL;
- ACPI_FUNCTION_TRACE("acpi_ec_stop");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
ec = acpi_driver_data(device);
@@ -1256,15 +1236,15 @@ static int acpi_ec_stop(struct acpi_device *device, int type)
ACPI_ADR_SPACE_EC,
&acpi_ec_space_handler);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
status =
acpi_remove_gpe_handler(NULL, ec->common.gpe_bit,
&acpi_ec_gpe_handler);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
- return_VALUE(0);
+ return 0;
}
static acpi_status __init
@@ -1300,7 +1280,7 @@ acpi_fake_ecdt_poll_callback(acpi_handle handle,
&ec_ecdt->common.gpe_bit);
if (ACPI_FAILURE(status))
return status;
- spin_lock_init(&ec_ecdt->poll.lock);
+ init_MUTEX(&ec_ecdt->poll.sem);
ec_ecdt->common.global_lock = TRUE;
ec_ecdt->common.handle = handle;
@@ -1416,7 +1396,7 @@ static int __init acpi_ec_poll_get_real_ecdt(void)
ec_ecdt->common.status_addr = ecdt_ptr->ec_control;
ec_ecdt->common.data_addr = ecdt_ptr->ec_data;
ec_ecdt->common.gpe_bit = ecdt_ptr->gpe_bit;
- spin_lock_init(&ec_ecdt->poll.lock);
+ init_MUTEX(&ec_ecdt->poll.sem);
/* use the GL just to be safe */
ec_ecdt->common.global_lock = TRUE;
ec_ecdt->common.uid = ecdt_ptr->uid;
@@ -1534,23 +1514,22 @@ static int __init acpi_ec_init(void)
{
int result = 0;
- ACPI_FUNCTION_TRACE("acpi_ec_init");
if (acpi_disabled)
- return_VALUE(0);
+ return 0;
acpi_ec_dir = proc_mkdir(ACPI_EC_CLASS, acpi_root_dir);
if (!acpi_ec_dir)
- return_VALUE(-ENODEV);
+ return -ENODEV;
/* Now register the driver for the EC */
result = acpi_bus_register_driver(&acpi_ec_driver);
if (result < 0) {
remove_proc_entry(ACPI_EC_CLASS, acpi_root_dir);
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
- return_VALUE(result);
+ return result;
}
subsys_initcall(acpi_ec_init);
@@ -1559,13 +1538,12 @@ subsys_initcall(acpi_ec_init);
#if 0
static void __exit acpi_ec_exit(void)
{
- ACPI_FUNCTION_TRACE("acpi_ec_exit");
acpi_bus_unregister_driver(&acpi_ec_driver);
remove_proc_entry(ACPI_EC_CLASS, acpi_root_dir);
- return_VOID;
+ return;
}
#endif /* 0 */
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-28 23:25:23 +0300