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authorJean Delvare <khali@linux-fr.org>2010-10-28 20:31:48 +0200
committerJean Delvare <khali@endymion.delvare>2010-10-28 20:31:48 +0200
commit2ae61de90545fe3dadae8119181c430d89a8627b (patch)
tree9a2aa7cc29674089dd9cc202050d61c95f559407 /drivers/hwmon/w83795.c
parent0d7237bfd13a0a8df270654223c15a16b368a3bd (diff)
downloadop-kernel-dev-2ae61de90545fe3dadae8119181c430d89a8627b.zip
op-kernel-dev-2ae61de90545fe3dadae8119181c430d89a8627b.tar.gz
hwmon: (w83795) Delay reading limit registers
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@linux-fr.org>
Diffstat (limited to 'drivers/hwmon/w83795.c')
-rw-r--r--drivers/hwmon/w83795.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/hwmon/w83795.c b/drivers/hwmon/w83795.c
index 511bced..6464a52 100644
--- a/drivers/hwmon/w83795.c
+++ b/drivers/hwmon/w83795.c
@@ -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 i2c_client *client)
/* 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_device(struct device *dev)
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_client *client,
}
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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