Wait until we need the limit register values, instead of pre-reading
them. This saves 544 ms on modprobe on my test system. Obviously this
time is added when first running "sensors" or any other monitoring
application, but I think it is better than slowing down the boot.
Signed-off-by: Jean Delvare <khali@xxxxxxxxxxxx>
---
drivers/hwmon/w83795.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--- linux-2.6.36-rc4.orig/drivers/hwmon/w83795.c 2010-09-15 15:15:33.000000000 +0200
+++ linux-2.6.36-rc4/drivers/hwmon/w83795.c 2010-09-15 15:15:37.000000000 +0200
@@ -371,6 +371,7 @@ struct w83795_data {
u8 beeps[6]; /* Register value */
char valid;
+ char valid_limits;
};
/*
@@ -498,6 +499,8 @@ static void w83795_update_limits(struct
/* Read beep settings */
for (i = 0; i < ARRAY_SIZE(data->beeps); i++)
data->beeps[i] = w83795_read(client, W83795_REG_BEEP(i));
+
+ data->valid_limits = 1;
}
static void w83795_update_pwm_config(struct i2c_client *client)
@@ -564,6 +567,9 @@ static struct w83795_data *w83795_update
mutex_lock(&data->update_lock);
+ if (!data->valid_limits)
+ w83795_update_limits(client);
+
if (!(time_after(jiffies, data->last_updated + HZ * 2)
|| !data->valid))
goto END;
@@ -2017,7 +2023,6 @@ static int w83795_probe(struct i2c_clien
}
data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f;
- w83795_update_limits(client);
/* pwm and smart fan */
if (data->chip_type == w83795g)
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