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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>
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0fc1f8fc61
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236d903948
1 changed files with 0 additions and 10 deletions
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@ -554,7 +554,6 @@ struct nct6775_data {
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const char *name;
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struct device *hwmon_dev;
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struct mutex lock;
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u16 reg_temp[4][NUM_TEMP]; /* 0=temp, 1=temp_over, 2=temp_hyst,
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* 3=temp_crit
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@ -745,8 +744,6 @@ static u16 nct6775_read_value(struct nct6775_data *data, u16 reg)
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{
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int res, word_sized = is_word_sized(data, reg);
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mutex_lock(&data->lock);
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nct6775_set_bank(data, reg);
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outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET);
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res = inb_p(data->addr + DATA_REG_OFFSET);
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@ -755,8 +752,6 @@ static u16 nct6775_read_value(struct nct6775_data *data, u16 reg)
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data->addr + ADDR_REG_OFFSET);
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res = (res << 8) + inb_p(data->addr + DATA_REG_OFFSET);
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}
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mutex_unlock(&data->lock);
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return res;
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}
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@ -764,8 +759,6 @@ static int nct6775_write_value(struct nct6775_data *data, u16 reg, u16 value)
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{
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int word_sized = is_word_sized(data, reg);
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mutex_lock(&data->lock);
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nct6775_set_bank(data, reg);
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outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET);
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if (word_sized) {
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@ -774,8 +767,6 @@ static int nct6775_write_value(struct nct6775_data *data, u16 reg, u16 value)
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data->addr + ADDR_REG_OFFSET);
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}
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outb_p(value & 0xff, data->addr + DATA_REG_OFFSET);
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mutex_unlock(&data->lock);
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return 0;
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}
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@ -3416,7 +3407,6 @@ static int nct6775_probe(struct platform_device *pdev)
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data->kind = sio_data->kind;
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data->addr = res->start;
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mutex_init(&data->lock);
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mutex_init(&data->update_lock);
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data->name = nct6775_device_names[data->kind];
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data->bank = 0xff; /* Force initial bank selection */
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