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@xxxxxxxxxxxx>
---
This patch applies on top of the other patches introducing the new
nct6775 driver.
drivers/hwmon/nct6775.c | 10 ----------
1 file changed, 10 deletions(-)
diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c
index 2f30991..896f231 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 */
--
1.7.9.7
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