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Pull bugzilla-5764 into release branch

This commit is contained in:
Len Brown 2006-06-15 21:34:21 -04:00
parent e4151eaa7f f9a6ee1afb
commit 5b542e4422
1 changed files with 29 additions and 22 deletions
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45
drivers/acpi/ec.c
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@ -116,7 +116,7 @@ union acpi_ec {
struct acpi_generic_address command_addr; struct acpi_generic_address command_addr;
struct acpi_generic_address data_addr; struct acpi_generic_address data_addr;
unsigned long global_lock; unsigned long global_lock;
spinlock_t lock; struct semaphore sem;
} poll; } poll;
}; };
@ -323,7 +323,6 @@ static int acpi_ec_poll_read(union acpi_ec *ec, u8 address, u32 * data)
{ {
acpi_status status = AE_OK; acpi_status status = AE_OK;
int result = 0; int result = 0;
unsigned long flags = 0;
u32 glk = 0; u32 glk = 0;
ACPI_FUNCTION_TRACE("acpi_ec_read"); ACPI_FUNCTION_TRACE("acpi_ec_read");
@ -339,7 +338,10 @@ static int acpi_ec_poll_read(union acpi_ec *ec, u8 address, u32 * data)
return_VALUE(-ENODEV); return_VALUE(-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, acpi_hw_low_level_write(8, ACPI_EC_COMMAND_READ,
&ec->common.command_addr); &ec->common.command_addr);
@ -358,8 +360,8 @@ static int acpi_ec_poll_read(union acpi_ec *ec, u8 address, u32 * data)
*data, address)); *data, address));
end: end:
spin_unlock_irqrestore(&ec->poll.lock, flags); up(&ec->poll.sem);
end_nosem:
if (ec->common.global_lock) if (ec->common.global_lock)
acpi_release_global_lock(glk); acpi_release_global_lock(glk);
@ -370,7 +372,6 @@ static int acpi_ec_poll_write(union acpi_ec *ec, u8 address, u8 data)
{ {
int result = 0; int result = 0;
acpi_status status = AE_OK; acpi_status status = AE_OK;
unsigned long flags = 0;
u32 glk = 0; u32 glk = 0;
ACPI_FUNCTION_TRACE("acpi_ec_write"); ACPI_FUNCTION_TRACE("acpi_ec_write");
@ -384,7 +385,10 @@ static int acpi_ec_poll_write(union acpi_ec *ec, u8 address, u8 data)
return_VALUE(-ENODEV); return_VALUE(-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, acpi_hw_low_level_write(8, ACPI_EC_COMMAND_WRITE,
&ec->common.command_addr); &ec->common.command_addr);
@ -406,8 +410,8 @@ static int acpi_ec_poll_write(union acpi_ec *ec, u8 address, u8 data)
data, address)); data, address));
end: end:
spin_unlock_irqrestore(&ec->poll.lock, flags); up(&ec->poll.sem);
end_nosem:
if (ec->common.global_lock) if (ec->common.global_lock)
acpi_release_global_lock(glk); acpi_release_global_lock(glk);
@ -568,7 +572,6 @@ static int acpi_ec_poll_query(union acpi_ec *ec, u32 * data)
{ {
int result = 0; int result = 0;
acpi_status status = AE_OK; acpi_status status = AE_OK;
unsigned long flags = 0;
u32 glk = 0; u32 glk = 0;
ACPI_FUNCTION_TRACE("acpi_ec_query"); ACPI_FUNCTION_TRACE("acpi_ec_query");
@ -589,7 +592,10 @@ static int acpi_ec_poll_query(union acpi_ec *ec, u32 * data)
* Note that successful completion of the query causes the ACPI_EC_SCI * Note that successful completion of the query causes the ACPI_EC_SCI
* bit to be cleared (and thus clearing the interrupt source). * 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, acpi_hw_low_level_write(8, ACPI_EC_COMMAND_QUERY,
&ec->common.command_addr); &ec->common.command_addr);
@ -602,8 +608,8 @@ static int acpi_ec_poll_query(union acpi_ec *ec, u32 * data)
result = -ENODATA; result = -ENODATA;
end: end:
spin_unlock_irqrestore(&ec->poll.lock, flags); up(&ec->poll.sem);
end_nosem:
if (ec->common.global_lock) if (ec->common.global_lock)
acpi_release_global_lock(glk); acpi_release_global_lock(glk);
@ -680,7 +686,6 @@ static void acpi_ec_gpe_poll_query(void *ec_cxt)
{ {
union acpi_ec *ec = (union acpi_ec *)ec_cxt; union acpi_ec *ec = (union acpi_ec *)ec_cxt;
u32 value = 0; u32 value = 0;
unsigned long flags = 0;
static char object_name[5] = { '_', 'Q', '0', '0', '\0' }; static char object_name[5] = { '_', 'Q', '0', '0', '\0' };
const char hex[] = { '0', '1', '2', '3', '4', '5', '6', '7', const char hex[] = { '0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F' '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
@ -691,9 +696,11 @@ static void acpi_ec_gpe_poll_query(void *ec_cxt)
if (!ec_cxt) if (!ec_cxt)
goto end; goto end;
spin_lock_irqsave(&ec->poll.lock, flags); if (down_interruptible (&ec->poll.sem)) {
return_VOID;
}
acpi_hw_low_level_read(8, &value, &ec->common.command_addr); 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! /* TBD: Implement asynch events!
* NOTE: All we care about are EC-SCI's. Other EC events are * NOTE: All we care about are EC-SCI's. Other EC events are
@ -1003,7 +1010,7 @@ static int acpi_ec_poll_add(struct acpi_device *device)
ec->common.handle = device->handle; ec->common.handle = device->handle;
ec->common.uid = -1; 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_name(device), ACPI_EC_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_EC_CLASS); strcpy(acpi_device_class(device), ACPI_EC_CLASS);
acpi_driver_data(device) = ec; acpi_driver_data(device) = ec;
@ -1295,7 +1302,7 @@ acpi_fake_ecdt_poll_callback(acpi_handle handle,
&ec_ecdt->common.gpe_bit); &ec_ecdt->common.gpe_bit);
if (ACPI_FAILURE(status)) if (ACPI_FAILURE(status))
return 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.global_lock = TRUE;
ec_ecdt->common.handle = handle; ec_ecdt->common.handle = handle;
@ -1411,7 +1418,7 @@ static int __init acpi_ec_poll_get_real_ecdt(void)
ec_ecdt->common.status_addr = ecdt_ptr->ec_control; ec_ecdt->common.status_addr = ecdt_ptr->ec_control;
ec_ecdt->common.data_addr = ecdt_ptr->ec_data; ec_ecdt->common.data_addr = ecdt_ptr->ec_data;
ec_ecdt->common.gpe_bit = ecdt_ptr->gpe_bit; 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 */ /* use the GL just to be safe */
ec_ecdt->common.global_lock = TRUE; ec_ecdt->common.global_lock = TRUE;
ec_ecdt->common.uid = ecdt_ptr->uid; ec_ecdt->common.uid = ecdt_ptr->uid;