1 files changed, 153 insertions, 190 deletions

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 7aa600794ae4..4a909bfb805c 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -45,35 +45,34 @@ ACPI_MODULE_NAME("acpi_ec")
 #define ACPI_EC_DRIVER_NAME             "ACPI Embedded Controller Driver"
 #define ACPI_EC_DEVICE_NAME             "Embedded Controller"
 #define ACPI_EC_FILE_INFO               "info"
-
+#undef PREFIX
+#define PREFIX                          "ACPI: EC: "
 /* EC status register */
 #define ACPI_EC_FLAG_OBF        0x01    /* Output buffer full */
 #define ACPI_EC_FLAG_IBF        0x02    /* Input buffer full */
 #define ACPI_EC_FLAG_BURST      0x10    /* burst mode */
 #define ACPI_EC_FLAG_SCI        0x20    /* EC-SCI occurred */
-
 /* EC commands */
-#define ACPI_EC_COMMAND_READ    0x80
-#define ACPI_EC_COMMAND_WRITE   0x81
-#define ACPI_EC_BURST_ENABLE    0x82
-#define ACPI_EC_BURST_DISABLE   0x83
-#define ACPI_EC_COMMAND_QUERY   0x84
-
+enum ec_command {
+        ACPI_EC_COMMAND_READ = 0x80,
+        ACPI_EC_COMMAND_WRITE = 0x81,
+        ACPI_EC_BURST_ENABLE = 0x82,
+        ACPI_EC_BURST_DISABLE = 0x83,
+        ACPI_EC_COMMAND_QUERY = 0x84,
+};
 /* EC events */
-enum {
+enum ec_event {
         ACPI_EC_EVENT_OBF_1 = 1,        /* Output buffer full */
-        ACPI_EC_EVENT_IBF_0,            /* Input buffer empty */
+        ACPI_EC_EVENT_IBF_0,    /* Input buffer empty */
 };
 
-#define ACPI_EC_DELAY           50      /* Wait 50ms max. during EC ops */
+#define ACPI_EC_DELAY           500     /* Wait 500ms max. during EC ops */
 #define ACPI_EC_UDELAY_GLK      1000    /* Wait 1ms max. to get global lock */
-#define ACPI_EC_UDELAY         100      /* Poll @ 100us increments */
-#define ACPI_EC_UDELAY_COUNT   1000     /* Wait 10ms max. during EC ops */
 
-enum {
-        EC_INTR = 1,    /* Output buffer full */
-        EC_POLL,        /* Input buffer empty */
-};
+static enum ec_mode {
+        EC_INTR = 1,            /* Output buffer full */
+        EC_POLL,                /* Input buffer empty */
+} acpi_ec_mode = EC_INTR;
 
 static int acpi_ec_remove(struct acpi_device *device, int type);
 static int acpi_ec_start(struct acpi_device *device);
@@ -96,19 +95,18 @@ static struct acpi_driver acpi_ec_driver = {
 struct acpi_ec {
         acpi_handle handle;
         unsigned long uid;
-        unsigned long gpe_bit;
+        unsigned long gpe;
         unsigned long command_addr;
         unsigned long data_addr;
         unsigned long global_lock;
-        struct semaphore sem;
-        unsigned int expect_event;
+        struct mutex lock;
+        atomic_t query_pending;
         atomic_t leaving_burst; /* 0 : No, 1 : Yes, 2: abort */
         wait_queue_head_t wait;
 } *ec_ecdt;
 
 /* External interfaces use first EC only, so remember */
 static struct acpi_device *first_ec;
-static int acpi_ec_mode = EC_INTR;
 
 /* --------------------------------------------------------------------------
                              Transaction Management
@@ -134,54 +132,41 @@ static inline void acpi_ec_write_data(struct acpi_ec *ec, u8 data)
         outb(data, ec->data_addr);
 }
 
-static int acpi_ec_check_status(u8 status, u8 event)
+static inline int acpi_ec_check_status(struct acpi_ec *ec, enum ec_event event)
 {
-        switch (event) {
-        case ACPI_EC_EVENT_OBF_1:
+        u8 status = acpi_ec_read_status(ec);
+
+        if (event == ACPI_EC_EVENT_OBF_1) {
                 if (status & ACPI_EC_FLAG_OBF)
                         return 1;
-                break;
-        case ACPI_EC_EVENT_IBF_0:
+        } else if (event == ACPI_EC_EVENT_IBF_0) {
                 if (!(status & ACPI_EC_FLAG_IBF))
                         return 1;
-                break;
-        default:
-                break;
         }
 
         return 0;
 }
 
-static int acpi_ec_wait(struct acpi_ec *ec, u8 event)
+static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event)
 {
-        int i = (acpi_ec_mode == EC_POLL) ? ACPI_EC_UDELAY_COUNT : 0;
-        long time_left;
-
-        ec->expect_event = event;
-        if (acpi_ec_check_status(acpi_ec_read_status(ec), event)) {
-                ec->expect_event = 0;
-                return 0;
-        }
-
-        do {
-                if (acpi_ec_mode == EC_POLL) {
-                        udelay(ACPI_EC_UDELAY);
-                } else {
-                        time_left = wait_event_timeout(ec->wait,
-                                    !ec->expect_event,
-                                    msecs_to_jiffies(ACPI_EC_DELAY));
-                        if (time_left > 0) {
-                                ec->expect_event = 0;
+        if (acpi_ec_mode == EC_POLL) {
+                unsigned long delay = jiffies + msecs_to_jiffies(ACPI_EC_DELAY);
+                while (time_before(jiffies, delay)) {
+                        if (acpi_ec_check_status(ec, event))
                                 return 0;
-                        }
                 }
-                if (acpi_ec_check_status(acpi_ec_read_status(ec), event)) {
-                        ec->expect_event = 0;
+        } else {
+                if (wait_event_timeout(ec->wait,
+                                       acpi_ec_check_status(ec, event),
+                                       msecs_to_jiffies(ACPI_EC_DELAY)) ||
+                    acpi_ec_check_status(ec, event)) {
                         return 0;
+                } else {
+                        printk(KERN_ERR PREFIX "acpi_ec_wait timeout,"
+                               " status = %d, expect_event = %d\n",
+                               acpi_ec_read_status(ec), event);
                 }
-        } while (--i > 0);
-
-        ec->expect_event = 0;
+        }
 
         return -ETIME;
 }
@@ -196,7 +181,6 @@ int acpi_ec_enter_burst_mode(struct acpi_ec *ec)
         u8 tmp = 0;
         u8 status = 0;
 
-
         status = acpi_ec_read_status(ec);
         if (status != -EINVAL && !(status & ACPI_EC_FLAG_BURST)) {
                 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
@@ -212,7 +196,7 @@ int acpi_ec_enter_burst_mode(struct acpi_ec *ec)
 
         atomic_set(&ec->leaving_burst, 0);
         return 0;
-  end:
+      end:
         ACPI_EXCEPTION((AE_INFO, status, "EC wait, burst mode"));
         return -1;
 }
@@ -221,58 +205,68 @@ int acpi_ec_leave_burst_mode(struct acpi_ec *ec)
 {
         u8 status = 0;
 
-
         status = acpi_ec_read_status(ec);
-        if (status != -EINVAL && (status & ACPI_EC_FLAG_BURST)){
+        if (status != -EINVAL && (status & ACPI_EC_FLAG_BURST)) {
                 status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
-                if(status)
+                if (status)
                         goto end;
                 acpi_ec_write_cmd(ec, ACPI_EC_BURST_DISABLE);
                 acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
         }
         atomic_set(&ec->leaving_burst, 1);
         return 0;
-  end:
+      end:
         ACPI_EXCEPTION((AE_INFO, status, "EC leave burst mode"));
         return -1;
 }
-#endif /* ACPI_FUTURE_USAGE */
+#endif                          /* ACPI_FUTURE_USAGE */
 
 static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, u8 command,
-                                        const u8 *wdata, unsigned wdata_len,
-                                        u8 *rdata, unsigned rdata_len)
+                                        const u8 * wdata, unsigned wdata_len,
+                                        u8 * rdata, unsigned rdata_len)
 {
-        int result;
+        int result = 0;
 
         acpi_ec_write_cmd(ec, command);
 
-        for (; wdata_len > 0; wdata_len --) {
+        for (; wdata_len > 0; --wdata_len) {
                 result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
-                if (result)
-                        return result;
+                if (result) {
+                        printk(KERN_ERR PREFIX
+                               "write_cmd timeout, command = %d\n", command);
+                        goto end;
+                }
                 acpi_ec_write_data(ec, *(wdata++));
         }
 
-        if (command == ACPI_EC_COMMAND_WRITE) {
+        if (!rdata_len) {
                 result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
-                if (result)
-                        return result;
+                if (result) {
+                        printk(KERN_ERR PREFIX
+                               "finish-write timeout, command = %d\n", command);
+                        goto end;
+                }
+        } else if (command == ACPI_EC_COMMAND_QUERY) {
+                atomic_set(&ec->query_pending, 0);
         }
 
-        for (; rdata_len > 0; rdata_len --) {
+        for (; rdata_len > 0; --rdata_len) {
                 result = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF_1);
-                if (result)
-                        return result;
+                if (result) {
+                        printk(KERN_ERR PREFIX "read timeout, command = %d\n",
+                               command);
+                        goto end;
+                }
 
                 *(rdata++) = acpi_ec_read_data(ec);
         }
-
-        return 0;
+      end:
+        return result;
 }
 
 static int acpi_ec_transaction(struct acpi_ec *ec, u8 command,
-                                const u8 *wdata, unsigned wdata_len,
-                                u8 *rdata, unsigned rdata_len)
+                               const u8 * wdata, unsigned wdata_len,
+                               u8 * rdata, unsigned rdata_len)
 {
         int status;
         u32 glk;
@@ -280,36 +274,40 @@ static int acpi_ec_transaction(struct acpi_ec *ec, u8 command,
         if (!ec || (wdata_len && !wdata) || (rdata_len && !rdata))
                 return -EINVAL;
 
-        if (rdata)
-                memset(rdata, 0, rdata_len);
+        if (rdata)
+                memset(rdata, 0, rdata_len);
 
+        mutex_lock(&ec->lock);
         if (ec->global_lock) {
                 status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
                 if (ACPI_FAILURE(status))
                         return -ENODEV;
         }
-        down(&ec->sem);
+
+        /* Make sure GPE is enabled before doing transaction */
+        acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
 
         status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0);
         if (status) {
-                printk(KERN_DEBUG PREFIX "read EC, IB not empty\n");
+                printk(KERN_DEBUG PREFIX
+                       "input buffer is not empty, aborting transaction\n");
                 goto end;
         }
 
-        status = acpi_ec_transaction_unlocked(ec, command,
-                                              wdata, wdata_len,
-                                              rdata, rdata_len);
+        status = acpi_ec_transaction_unlocked(ec, command,
+                                              wdata, wdata_len,
+                                              rdata, rdata_len);
 
-end:
-        up(&ec->sem);
+      end:
 
         if (ec->global_lock)
                 acpi_release_global_lock(glk);
+        mutex_unlock(&ec->lock);
 
         return status;
 }
 
-static int acpi_ec_read(struct acpi_ec *ec, u8 address, u8 *data)
+static int acpi_ec_read(struct acpi_ec *ec, u8 address, u8 * data)
 {
         int result;
         u8 d;
@@ -322,15 +320,15 @@ static int acpi_ec_read(struct acpi_ec *ec, u8 address, u8 *data)
 
 static int acpi_ec_write(struct acpi_ec *ec, u8 address, u8 data)
 {
-        u8 wdata[2] = { address, data };
-        return acpi_ec_transaction(ec, ACPI_EC_COMMAND_WRITE,
+        u8 wdata[2] = { address, data };
+        return acpi_ec_transaction(ec, ACPI_EC_COMMAND_WRITE,
                                    wdata, 2, NULL, 0);
 }
 
 /*
  * Externally callable EC access functions. For now, assume 1 EC only
  */
-int ec_read(u8 addr, u8 *val)
+int ec_read(u8 addr, u8 * val)
 {
         struct acpi_ec *ec;
         int err;
@@ -370,8 +368,8 @@ int ec_write(u8 addr, u8 val)
 EXPORT_SYMBOL(ec_write);
 
 int ec_transaction(u8 command,
-                          const u8 *wdata, unsigned wdata_len,
-                          u8 *rdata, unsigned rdata_len)
+                          const u8 * wdata, unsigned wdata_len,
+                          u8 * rdata, unsigned rdata_len)
 {
         struct acpi_ec *ec;
 
@@ -386,65 +384,49 @@ int ec_transaction(u8 command,
 
 EXPORT_SYMBOL(ec_transaction);
 
-static int acpi_ec_query(struct acpi_ec *ec, u8 *data)
+static int acpi_ec_query(struct acpi_ec *ec, u8 * data)
 {
         int result;
-        u8 d;
+        u8 d;
 
-        if (!ec || !data)
-                return -EINVAL;
+        if (!ec || !data)
+                return -EINVAL;
 
-        /*
-         * Query the EC to find out which _Qxx method we need to evaluate.
-         * Note that successful completion of the query causes the ACPI_EC_SCI
-         * bit to be cleared (and thus clearing the interrupt source).
-         */
+        /*
+         * Query the EC to find out which _Qxx method we need to evaluate.
+         * Note that successful completion of the query causes the ACPI_EC_SCI
+         * bit to be cleared (and thus clearing the interrupt source).
+         */
 
-        result = acpi_ec_transaction(ec, ACPI_EC_COMMAND_QUERY, NULL, 0, &d, 1);
-        if (result)
-                return result;
+        result = acpi_ec_transaction(ec, ACPI_EC_COMMAND_QUERY, NULL, 0, &d, 1);
+        if (result)
+                return result;
 
-        if (!d)
-                return -ENODATA;
+        if (!d)
+                return -ENODATA;
 
-        *data = d;
-        return 0;
+        *data = d;
+        return 0;
 }
 
 /* --------------------------------------------------------------------------
                                 Event Management
    -------------------------------------------------------------------------- */
 
-struct acpi_ec_query_data {
-        acpi_handle handle;
-        u8 data;
-};
-
 static void acpi_ec_gpe_query(void *ec_cxt)
 {
         struct acpi_ec *ec = (struct acpi_ec *)ec_cxt;
         u8 value = 0;
-        static char object_name[8];
+        char object_name[8];
 
-        if (!ec)
-                goto end;
-
-        value = acpi_ec_read_status(ec);
-
-        if (!(value & ACPI_EC_FLAG_SCI))
-                goto end;
-
-        if (acpi_ec_query(ec, &value))
-                goto end;
+        if (!ec || acpi_ec_query(ec, &value))
+                return;
 
         snprintf(object_name, 8, "_Q%2.2X", value);
 
-        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluating %s", object_name));
+        printk(KERN_INFO PREFIX "evaluating %s\n", object_name);
 
         acpi_evaluate_object(ec->handle, object_name, NULL, NULL);
-
-      end:
-        acpi_enable_gpe(NULL, ec->gpe_bit, ACPI_NOT_ISR);
 }
 
 static u32 acpi_ec_gpe_handler(void *data)
@@ -453,22 +435,18 @@ static u32 acpi_ec_gpe_handler(void *data)
         u8 value;
         struct acpi_ec *ec = (struct acpi_ec *)data;
 
-        acpi_clear_gpe(NULL, ec->gpe_bit, ACPI_ISR);
-        value = acpi_ec_read_status(ec);
-
         if (acpi_ec_mode == EC_INTR) {
-                if (acpi_ec_check_status(value, ec->expect_event)) {
-                        ec->expect_event = 0;
-                        wake_up(&ec->wait);
-                }
+                wake_up(&ec->wait);
         }
 
-        if (value & ACPI_EC_FLAG_SCI) {
-                status = acpi_os_execute(OSL_EC_BURST_HANDLER, acpi_ec_gpe_query, ec);
-                return status == AE_OK ?
-                    ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED;
+        value = acpi_ec_read_status(ec);
+        if ((value & ACPI_EC_FLAG_SCI) && !atomic_read(&ec->query_pending)) {
+                atomic_set(&ec->query_pending, 1);
+                status =
+                    acpi_os_execute(OSL_EC_BURST_HANDLER, acpi_ec_gpe_query,
+                                    ec);
         }
-        acpi_enable_gpe(NULL, ec->gpe_bit, ACPI_ISR);
+
         return status == AE_OK ?
             ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED;
 }
@@ -504,7 +482,6 @@ acpi_ec_space_handler(u32 function,
         acpi_integer f_v = 0;
         int i = 0;
 
-
         if ((address > 0xFF) || !value || !handler_context)
                 return AE_BAD_PARAMETER;
 
@@ -518,7 +495,7 @@ acpi_ec_space_handler(u32 function,
         switch (function) {
         case ACPI_READ:
                 temp = 0;
-                result = acpi_ec_read(ec, (u8) address, (u8 *) &temp);
+                result = acpi_ec_read(ec, (u8) address, (u8 *) & temp);
                 break;
         case ACPI_WRITE:
                 result = acpi_ec_write(ec, (u8) address, (u8) temp);
@@ -571,18 +548,15 @@ static int acpi_ec_read_info(struct seq_file *seq, void *offset)
 {
         struct acpi_ec *ec = (struct acpi_ec *)seq->private;
 
-
         if (!ec)
                 goto end;
 
-        seq_printf(seq, "gpe bit:                 0x%02x\n",
-                   (u32) ec->gpe_bit);
+        seq_printf(seq, "gpe:                 0x%02x\n", (u32) ec->gpe);
         seq_printf(seq, "ports:                   0x%02x, 0x%02x\n",
-                   (u32) ec->command_addr,
-                   (u32) ec->data_addr);
+                   (u32) ec->command_addr, (u32) ec->data_addr);
         seq_printf(seq, "use global lock:         %s\n",
                    ec->global_lock ? "yes" : "no");
-        acpi_enable_gpe(NULL, ec->gpe_bit, ACPI_NOT_ISR);
+        acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
 
       end:
         return 0;
@@ -605,7 +579,6 @@ static int acpi_ec_add_fs(struct acpi_device *device)
 {
         struct proc_dir_entry *entry = NULL;
 
-
         if (!acpi_device_dir(device)) {
                 acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
                                                      acpi_ec_dir);
@@ -648,7 +621,6 @@ static int acpi_ec_add(struct acpi_device *device)
         acpi_status status = AE_OK;
         struct acpi_ec *ec = NULL;
 
-
         if (!device)
                 return -EINVAL;
 
@@ -659,7 +631,8 @@ 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);
                 init_waitqueue_head(&ec->wait);
@@ -669,8 +642,7 @@ static int acpi_ec_add(struct acpi_device *device)
         acpi_driver_data(device) = ec;
 
         /* Use the global lock for all EC transactions? */
-        acpi_evaluate_integer(ec->handle, "_GLK", NULL,
-                              &ec->global_lock);
+        acpi_evaluate_integer(ec->handle, "_GLK", NULL, &ec->global_lock);
 
         /* XXX we don't test uids, because on some boxes ecdt uid = 0, see:
            http://bugzilla.kernel.org/show_bug.cgi?id=6111 */
@@ -679,7 +651,7 @@ static int acpi_ec_add(struct acpi_device *device)
                                                   ACPI_ADR_SPACE_EC,
                                                   &acpi_ec_space_handler);
 
-                acpi_remove_gpe_handler(NULL, ec_ecdt->gpe_bit,
+                acpi_remove_gpe_handler(NULL, ec_ecdt->gpe,
                                         &acpi_ec_gpe_handler);
 
                 kfree(ec_ecdt);
@@ -687,11 +659,10 @@ static int acpi_ec_add(struct acpi_device *device)
 
         /* Get GPE bit assignment (EC events). */
         /* TODO: Add support for _GPE returning a package */
-        status =
-            acpi_evaluate_integer(ec->handle, "_GPE", NULL,
-                                  &ec->gpe_bit);
+        status = acpi_evaluate_integer(ec->handle, "_GPE", NULL, &ec->gpe);
         if (ACPI_FAILURE(status)) {
-                ACPI_EXCEPTION((AE_INFO, status, "Obtaining GPE bit assignment"));
+                ACPI_EXCEPTION((AE_INFO, status,
+                                "Obtaining GPE bit assignment"));
                 result = -ENODEV;
                 goto end;
         }
@@ -701,13 +672,13 @@ static int acpi_ec_add(struct acpi_device *device)
                 goto end;
 
         ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s [%s] (gpe %d) interrupt mode.",
-               acpi_device_name(device), acpi_device_bid(device),
-               (u32) ec->gpe_bit));
+                          acpi_device_name(device), acpi_device_bid(device),
+                          (u32) ec->gpe));
 
         if (!first_ec)
                 first_ec = device;
 
-  end:
+      end:
         if (result)
                 kfree(ec);
 
@@ -718,7 +689,6 @@ static int acpi_ec_remove(struct acpi_device *device, int type)
 {
         struct acpi_ec *ec = NULL;
 
-
         if (!device)
                 return -EINVAL;
 
@@ -761,7 +731,6 @@ static int acpi_ec_start(struct acpi_device *device)
         acpi_status status = AE_OK;
         struct acpi_ec *ec = NULL;
 
-
         if (!device)
                 return -EINVAL;
 
@@ -782,27 +751,26 @@ static int acpi_ec_start(struct acpi_device *device)
         }
 
         ACPI_DEBUG_PRINT((ACPI_DB_INFO, "gpe=0x%02lx, ports=0x%2lx,0x%2lx",
-                          ec->gpe_bit, ec->command_addr, ec->data_addr));
+                          ec->gpe, ec->command_addr, ec->data_addr));
 
         /*
          * Install GPE handler
          */
-        status = acpi_install_gpe_handler(NULL, ec->gpe_bit,
+        status = acpi_install_gpe_handler(NULL, ec->gpe,
                                           ACPI_GPE_EDGE_TRIGGERED,
                                           &acpi_ec_gpe_handler, ec);
         if (ACPI_FAILURE(status)) {
                 return -ENODEV;
         }
-        acpi_set_gpe_type(NULL, ec->gpe_bit, ACPI_GPE_TYPE_RUNTIME);
-        acpi_enable_gpe(NULL, ec->gpe_bit, ACPI_NOT_ISR);
+        acpi_set_gpe_type(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
+        acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
 
         status = acpi_install_address_space_handler(ec->handle,
                                                     ACPI_ADR_SPACE_EC,
                                                     &acpi_ec_space_handler,
                                                     &acpi_ec_space_setup, ec);
         if (ACPI_FAILURE(status)) {
-                acpi_remove_gpe_handler(NULL, ec->gpe_bit,
-                                        &acpi_ec_gpe_handler);
+                acpi_remove_gpe_handler(NULL, ec->gpe, &acpi_ec_gpe_handler);
                 return -ENODEV;
         }
 
@@ -814,7 +782,6 @@ static int acpi_ec_stop(struct acpi_device *device, int type)
         acpi_status status = AE_OK;
         struct acpi_ec *ec = NULL;
 
-
         if (!device)
                 return -EINVAL;
 
@@ -826,9 +793,7 @@ static int acpi_ec_stop(struct acpi_device *device, int type)
         if (ACPI_FAILURE(status))
                 return -ENODEV;
 
-        status =
-            acpi_remove_gpe_handler(NULL, ec->gpe_bit,
-                                    &acpi_ec_gpe_handler);
+        status = acpi_remove_gpe_handler(NULL, ec->gpe, &acpi_ec_gpe_handler);
         if (ACPI_FAILURE(status))
                 return -ENODEV;
 
@@ -841,7 +806,7 @@ 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);
         }
@@ -853,16 +818,15 @@ acpi_fake_ecdt_callback(acpi_handle handle,
         ec_ecdt->uid = -1;
         acpi_evaluate_integer(handle, "_UID", NULL, &ec_ecdt->uid);
 
-        status =
-            acpi_evaluate_integer(handle, "_GPE", NULL,
-                                  &ec_ecdt->gpe_bit);
+        status = acpi_evaluate_integer(handle, "_GPE", NULL, &ec_ecdt->gpe);
         if (ACPI_FAILURE(status))
                 return status;
         ec_ecdt->global_lock = TRUE;
         ec_ecdt->handle = handle;
 
         ACPI_DEBUG_PRINT((ACPI_DB_INFO, "GPE=0x%02lx, ports=0x%2lx, 0x%2lx",
-               ec_ecdt->gpe_bit, ec_ecdt->command_addr, ec_ecdt->data_addr));
+                          ec_ecdt->gpe, ec_ecdt->command_addr,
+                          ec_ecdt->data_addr));
 
         return AE_CTRL_TERMINATE;
 }
@@ -901,7 +865,7 @@ static int __init acpi_ec_fake_ecdt(void)
                 goto error;
         }
         return 0;
-  error:
+      error:
         return ret;
 }
 
@@ -926,25 +890,24 @@ 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);
         }
         ec_ecdt->command_addr = ecdt_ptr->ec_control.address;
         ec_ecdt->data_addr = ecdt_ptr->ec_data.address;
-        ec_ecdt->gpe_bit = ecdt_ptr->gpe_bit;
+        ec_ecdt->gpe = ecdt_ptr->gpe_bit;
         /* use the GL just to be safe */
         ec_ecdt->global_lock = TRUE;
         ec_ecdt->uid = ecdt_ptr->uid;
 
-        status =
-            acpi_get_handle(NULL, ecdt_ptr->ec_id, &ec_ecdt->handle);
+        status = acpi_get_handle(NULL, ecdt_ptr->ec_id, &ec_ecdt->handle);
         if (ACPI_FAILURE(status)) {
                 goto error;
         }
 
         return 0;
-  error:
+      error:
         ACPI_EXCEPTION((AE_INFO, status, "Could not use ECDT"));
         kfree(ec_ecdt);
         ec_ecdt = NULL;
@@ -970,14 +933,14 @@ int __init acpi_ec_ecdt_probe(void)
         /*
          * Install GPE handler
          */
-        status = acpi_install_gpe_handler(NULL, ec_ecdt->gpe_bit,
+        status = acpi_install_gpe_handler(NULL, ec_ecdt->gpe,
                                           ACPI_GPE_EDGE_TRIGGERED,
                                           &acpi_ec_gpe_handler, ec_ecdt);
         if (ACPI_FAILURE(status)) {
                 goto error;
         }
-        acpi_set_gpe_type(NULL, ec_ecdt->gpe_bit, ACPI_GPE_TYPE_RUNTIME);
-        acpi_enable_gpe(NULL, ec_ecdt->gpe_bit, ACPI_NOT_ISR);
+        acpi_set_gpe_type(NULL, ec_ecdt->gpe, ACPI_GPE_TYPE_RUNTIME);
+        acpi_enable_gpe(NULL, ec_ecdt->gpe, ACPI_NOT_ISR);
 
         status = acpi_install_address_space_handler(ACPI_ROOT_OBJECT,
                                                     ACPI_ADR_SPACE_EC,
@@ -985,7 +948,7 @@ int __init acpi_ec_ecdt_probe(void)
                                                     &acpi_ec_space_setup,
                                                     ec_ecdt);
         if (ACPI_FAILURE(status)) {
-                acpi_remove_gpe_handler(NULL, ec_ecdt->gpe_bit,
+                acpi_remove_gpe_handler(NULL, ec_ecdt->gpe,
                                         &acpi_ec_gpe_handler);
                 goto error;
         }
@@ -1004,7 +967,6 @@ static int __init acpi_ec_init(void)
 {
         int result = 0;
 
-
         if (acpi_disabled)
                 return 0;
 
@@ -1057,7 +1019,8 @@ static int __init acpi_ec_set_intr_mode(char *str)
                 acpi_ec_mode = EC_POLL;
         }
         acpi_ec_driver.ops.add = acpi_ec_add;
-        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "EC %s mode.\n", intr ? "interrupt" : "polling"));
+        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "EC %s mode.\n",
+                          intr ? "interrupt" : "polling"));
 
         return 1;
 }