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path: root/drivers/hwmon/via686a.c
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Diffstat (limited to 'drivers/hwmon/via686a.c')
-rw-r--r--drivers/hwmon/via686a.c33
1 files changed, 17 insertions, 16 deletions
diff --git a/drivers/hwmon/via686a.c b/drivers/hwmon/via686a.c
index cb01848729b5..166298f1f190 100644
--- a/drivers/hwmon/via686a.c
+++ b/drivers/hwmon/via686a.c
@@ -39,6 +39,7 @@
39#include <linux/hwmon.h> 39#include <linux/hwmon.h>
40#include <linux/err.h> 40#include <linux/err.h>
41#include <linux/init.h> 41#include <linux/init.h>
42#include <linux/mutex.h>
42#include <asm/io.h> 43#include <asm/io.h>
43 44
44 45
@@ -296,7 +297,7 @@ static inline long TEMP_FROM_REG10(u16 val)
296struct via686a_data { 297struct via686a_data {
297 struct i2c_client client; 298 struct i2c_client client;
298 struct class_device *class_dev; 299 struct class_device *class_dev;
299 struct semaphore update_lock; 300 struct mutex update_lock;
300 char valid; /* !=0 if following fields are valid */ 301 char valid; /* !=0 if following fields are valid */
301 unsigned long last_updated; /* In jiffies */ 302 unsigned long last_updated; /* In jiffies */
302 303
@@ -355,11 +356,11 @@ static ssize_t set_in_min(struct device *dev, const char *buf,
355 struct via686a_data *data = i2c_get_clientdata(client); 356 struct via686a_data *data = i2c_get_clientdata(client);
356 unsigned long val = simple_strtoul(buf, NULL, 10); 357 unsigned long val = simple_strtoul(buf, NULL, 10);
357 358
358 down(&data->update_lock); 359 mutex_lock(&data->update_lock);
359 data->in_min[nr] = IN_TO_REG(val, nr); 360 data->in_min[nr] = IN_TO_REG(val, nr);
360 via686a_write_value(client, VIA686A_REG_IN_MIN(nr), 361 via686a_write_value(client, VIA686A_REG_IN_MIN(nr),
361 data->in_min[nr]); 362 data->in_min[nr]);
362 up(&data->update_lock); 363 mutex_unlock(&data->update_lock);
363 return count; 364 return count;
364} 365}
365static ssize_t set_in_max(struct device *dev, const char *buf, 366static ssize_t set_in_max(struct device *dev, const char *buf,
@@ -368,11 +369,11 @@ static ssize_t set_in_max(struct device *dev, const char *buf,
368 struct via686a_data *data = i2c_get_clientdata(client); 369 struct via686a_data *data = i2c_get_clientdata(client);
369 unsigned long val = simple_strtoul(buf, NULL, 10); 370 unsigned long val = simple_strtoul(buf, NULL, 10);
370 371
371 down(&data->update_lock); 372 mutex_lock(&data->update_lock);
372 data->in_max[nr] = IN_TO_REG(val, nr); 373 data->in_max[nr] = IN_TO_REG(val, nr);
373 via686a_write_value(client, VIA686A_REG_IN_MAX(nr), 374 via686a_write_value(client, VIA686A_REG_IN_MAX(nr),
374 data->in_max[nr]); 375 data->in_max[nr]);
375 up(&data->update_lock); 376 mutex_unlock(&data->update_lock);
376 return count; 377 return count;
377} 378}
378#define show_in_offset(offset) \ 379#define show_in_offset(offset) \
@@ -432,11 +433,11 @@ static ssize_t set_temp_over(struct device *dev, const char *buf,
432 struct via686a_data *data = i2c_get_clientdata(client); 433 struct via686a_data *data = i2c_get_clientdata(client);
433 int val = simple_strtol(buf, NULL, 10); 434 int val = simple_strtol(buf, NULL, 10);
434 435
435 down(&data->update_lock); 436 mutex_lock(&data->update_lock);
436 data->temp_over[nr] = TEMP_TO_REG(val); 437 data->temp_over[nr] = TEMP_TO_REG(val);
437 via686a_write_value(client, VIA686A_REG_TEMP_OVER[nr], 438 via686a_write_value(client, VIA686A_REG_TEMP_OVER[nr],
438 data->temp_over[nr]); 439 data->temp_over[nr]);
439 up(&data->update_lock); 440 mutex_unlock(&data->update_lock);
440 return count; 441 return count;
441} 442}
442static ssize_t set_temp_hyst(struct device *dev, const char *buf, 443static ssize_t set_temp_hyst(struct device *dev, const char *buf,
@@ -445,11 +446,11 @@ static ssize_t set_temp_hyst(struct device *dev, const char *buf,
445 struct via686a_data *data = i2c_get_clientdata(client); 446 struct via686a_data *data = i2c_get_clientdata(client);
446 int val = simple_strtol(buf, NULL, 10); 447 int val = simple_strtol(buf, NULL, 10);
447 448
448 down(&data->update_lock); 449 mutex_lock(&data->update_lock);
449 data->temp_hyst[nr] = TEMP_TO_REG(val); 450 data->temp_hyst[nr] = TEMP_TO_REG(val);
450 via686a_write_value(client, VIA686A_REG_TEMP_HYST[nr], 451 via686a_write_value(client, VIA686A_REG_TEMP_HYST[nr],
451 data->temp_hyst[nr]); 452 data->temp_hyst[nr]);
452 up(&data->update_lock); 453 mutex_unlock(&data->update_lock);
453 return count; 454 return count;
454} 455}
455#define show_temp_offset(offset) \ 456#define show_temp_offset(offset) \
@@ -508,10 +509,10 @@ static ssize_t set_fan_min(struct device *dev, const char *buf,
508 struct via686a_data *data = i2c_get_clientdata(client); 509 struct via686a_data *data = i2c_get_clientdata(client);
509 int val = simple_strtol(buf, NULL, 10); 510 int val = simple_strtol(buf, NULL, 10);
510 511
511 down(&data->update_lock); 512 mutex_lock(&data->update_lock);
512 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); 513 data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
513 via686a_write_value(client, VIA686A_REG_FAN_MIN(nr+1), data->fan_min[nr]); 514 via686a_write_value(client, VIA686A_REG_FAN_MIN(nr+1), data->fan_min[nr]);
514 up(&data->update_lock); 515 mutex_unlock(&data->update_lock);
515 return count; 516 return count;
516} 517}
517static ssize_t set_fan_div(struct device *dev, const char *buf, 518static ssize_t set_fan_div(struct device *dev, const char *buf,
@@ -521,12 +522,12 @@ static ssize_t set_fan_div(struct device *dev, const char *buf,
521 int val = simple_strtol(buf, NULL, 10); 522 int val = simple_strtol(buf, NULL, 10);
522 int old; 523 int old;
523 524
524 down(&data->update_lock); 525 mutex_lock(&data->update_lock);
525 old = via686a_read_value(client, VIA686A_REG_FANDIV); 526 old = via686a_read_value(client, VIA686A_REG_FANDIV);
526 data->fan_div[nr] = DIV_TO_REG(val); 527 data->fan_div[nr] = DIV_TO_REG(val);
527 old = (old & 0x0f) | (data->fan_div[1] << 6) | (data->fan_div[0] << 4); 528 old = (old & 0x0f) | (data->fan_div[1] << 6) | (data->fan_div[0] << 4);
528 via686a_write_value(client, VIA686A_REG_FANDIV, old); 529 via686a_write_value(client, VIA686A_REG_FANDIV, old);
529 up(&data->update_lock); 530 mutex_unlock(&data->update_lock);
530 return count; 531 return count;
531} 532}
532 533
@@ -639,7 +640,7 @@ static int via686a_detect(struct i2c_adapter *adapter)
639 strlcpy(new_client->name, client_name, I2C_NAME_SIZE); 640 strlcpy(new_client->name, client_name, I2C_NAME_SIZE);
640 641
641 data->valid = 0; 642 data->valid = 0;
642 init_MUTEX(&data->update_lock); 643 mutex_init(&data->update_lock);
643 /* Tell the I2C layer a new client has arrived */ 644 /* Tell the I2C layer a new client has arrived */
644 if ((err = i2c_attach_client(new_client))) 645 if ((err = i2c_attach_client(new_client)))
645 goto exit_free; 646 goto exit_free;
@@ -733,7 +734,7 @@ static struct via686a_data *via686a_update_device(struct device *dev)
733 struct via686a_data *data = i2c_get_clientdata(client); 734 struct via686a_data *data = i2c_get_clientdata(client);
734 int i; 735 int i;
735 736
736 down(&data->update_lock); 737 mutex_lock(&data->update_lock);
737 738
738 if (time_after(jiffies, data->last_updated + HZ + HZ / 2) 739 if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
739 || !data->valid) { 740 || !data->valid) {
@@ -788,7 +789,7 @@ static struct via686a_data *via686a_update_device(struct device *dev)
788 data->valid = 1; 789 data->valid = 1;
789 } 790 }
790 791
791 up(&data->update_lock); 792 mutex_unlock(&data->update_lock);
792 793
793 return data; 794 return data;
794} 795}