diff options
| author |   Guenter Roeck <linux@roeck-us.net> | 2013-03-08 07:42:00 -0800 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2013-04-07 21:16:40 -0700 |
| commit | 236d9039480059f97dc9d3cd75e3651582b62997 (patch) | |
| tree | 7d125f7bdacd47efe221c4190a48275e2d33e232 /drivers/hwmon/nct6775.c | |
| parent | hwmon: (nct6775) Only report VID if supported and enabled (diff) | |
| download | linux-dev-236d9039480059f97dc9d3cd75e3651582b62997.tar.xz linux-dev-236d9039480059f97dc9d3cd75e3651582b62997.zip | |
hwmon: (nct6775) Drop read/write lock
The read/write lock is acquired for each read/write operation from/to the chip.
This occurs either during initialization, when it is not needed, or during
updates, when the update_lock is held as well, and it is not needed either.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/nct6775.c')
| -rw-r--r-- | drivers/hwmon/nct6775.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c index 752fbd7efb32..2269bb241b83 100644 --- a/drivers/hwmon/nct6775.c +++ b/drivers/hwmon/nct6775.c @@ -554,7 +554,6 @@ struct nct6775_data { const char *name; struct device *hwmon_dev; - struct mutex lock; u16 reg_temp[4][NUM_TEMP]; /* 0=temp, 1=temp_over, 2=temp_hyst, * 3=temp_crit @@ -745,8 +744,6 @@ static u16 nct6775_read_value(struct nct6775_data *data, u16 reg) { int res, word_sized = is_word_sized(data, reg); - mutex_lock(&data->lock); - nct6775_set_bank(data, reg); outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET); res = inb_p(data->addr + DATA_REG_OFFSET); @@ -755,8 +752,6 @@ static u16 nct6775_read_value(struct nct6775_data *data, u16 reg) data->addr + ADDR_REG_OFFSET); res = (res << 8) + inb_p(data->addr + DATA_REG_OFFSET); } - - mutex_unlock(&data->lock); return res; } @@ -764,8 +759,6 @@ static int nct6775_write_value(struct nct6775_data *data, u16 reg, u16 value) { int word_sized = is_word_sized(data, reg); - mutex_lock(&data->lock); - nct6775_set_bank(data, reg); outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET); if (word_sized) { @@ -774,8 +767,6 @@ static int nct6775_write_value(struct nct6775_data *data, u16 reg, u16 value) data->addr + ADDR_REG_OFFSET); } outb_p(value & 0xff, data->addr + DATA_REG_OFFSET); - - mutex_unlock(&data->lock); return 0; } @@ -3416,7 +3407,6 @@ static int nct6775_probe(struct platform_device *pdev) data->kind = sio_data->kind; data->addr = res->start; - mutex_init(&data->lock); mutex_init(&data->update_lock); data->name = nct6775_device_names[data->kind]; data->bank = 0xff; /* Force initial bank selection */ |