ACPI: ec: Change semaphore to mutex.

Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 6 insertions, 6 deletions

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index a85f795ab4ec..034a96372357 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -103,7 +103,7 @@ struct acpi_ec {
         unsigned long command_addr;
         unsigned long data_addr;
         unsigned long global_lock;
-        struct semaphore sem;
+        struct mutex lock;
         atomic_t query_pending;
         atomic_t leaving_burst; /* 0 : No, 1 : Yes, 2: abort */
         wait_queue_head_t wait;
@@ -294,7 +294,7 @@ static int acpi_ec_transaction(struct acpi_ec *ec, u8 command,
                 if (ACPI_FAILURE(status))
                         return -ENODEV;
         }
-        down(&ec->sem);
+        mutex_lock(&ec->lock);
 
         /* Make sure GPE is enabled before doing transaction */
         acpi_enable_gpe(NULL, ec->gpe_bit, ACPI_NOT_ISR);
@@ -310,7 +310,7 @@ static int acpi_ec_transaction(struct acpi_ec *ec, u8 command,
                                               rdata, rdata_len);
 
 end:
-        up(&ec->sem);
+        mutex_unlock(&ec->lock);
 
         if (ec->global_lock)
                 acpi_release_global_lock(glk);
@@ -647,7 +647,7 @@ static int acpi_ec_add(struct acpi_device *device)
 
         ec->handle = device->handle;
         ec->uid = -1;
-        init_MUTEX(&ec->sem);
+        mutex_init(&ec->lock);
         atomic_set(&ec->query_pending, 0);
         if (acpi_ec_mode == EC_INTR) {
                 atomic_set(&ec->leaving_burst, 1);
@@ -830,7 +830,7 @@ acpi_fake_ecdt_callback(acpi_handle handle,
 {
         acpi_status status;
 
-        init_MUTEX(&ec_ecdt->sem);
+        mutex_init(&ec_ecdt->lock);
         if (acpi_ec_mode == EC_INTR) {
                 init_waitqueue_head(&ec_ecdt->wait);
         }
@@ -915,7 +915,7 @@ static int __init acpi_ec_get_real_ecdt(void)
                 return -ENOMEM;
         memset(ec_ecdt, 0, sizeof(struct acpi_ec));
 
-        init_MUTEX(&ec_ecdt->sem);
+        mutex_init(&ec_ecdt->lock);
         if (acpi_ec_mode == EC_INTR) {
                 init_waitqueue_head(&ec_ecdt->wait);
         }