2019-10-14 17:20:31

by Kyle Roeschley

Subject: [PATCH] hwmon: (tmp421) Allow reading at 2Hz instead of 0.5Hz

Our driver configures the device to read at 2Hz, but then only allows the
user to read cached temp values at up to 0.5Hz. Let's allow users to read
as quickly as we do.

Signed-off-by: Kyle Roeschley <[email protected]>
---
drivers/hwmon/tmp421.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/tmp421.c b/drivers/hwmon/tmp421.c
index a94e35cff3e5..83a4fab151d2 100644
--- a/drivers/hwmon/tmp421.c
+++ b/drivers/hwmon/tmp421.c
@@ -127,7 +127,8 @@ static struct tmp421_data *tmp421_update_device(struct device *dev)

mutex_lock(&data->update_lock);

- if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
+ if (time_after(jiffies, data->last_updated + (HZ / 2)) ||
+ !data->valid) {
data->config = i2c_smbus_read_byte_data(client,
TMP421_CONFIG_REG_1);

--
2.23.0.rc1

2019-10-18 16:11:51

by Guenter Roeck

Subject: Re: [PATCH] hwmon: (tmp421) Allow reading at 2Hz instead of 0.5Hz

On Mon, Oct 14, 2019 at 09:03:10AM -0500, Kyle Roeschley wrote:
> Our driver configures the device to read at 2Hz, but then only allows the
> user to read cached temp values at up to 0.5Hz. Let's allow users to read
> as quickly as we do.
>
> Signed-off-by: Kyle Roeschley <[email protected]>

Applied.

Thanks,
Guenter

> ---
> drivers/hwmon/tmp421.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/hwmon/tmp421.c b/drivers/hwmon/tmp421.c
> index a94e35cff3e5..83a4fab151d2 100644
> --- a/drivers/hwmon/tmp421.c
> +++ b/drivers/hwmon/tmp421.c
> @@ -127,7 +127,8 @@ static struct tmp421_data *tmp421_update_device(struct device *dev)
>
> mutex_lock(&data->update_lock);
>
> - if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
> + if (time_after(jiffies, data->last_updated + (HZ / 2)) ||
> + !data->valid) {
> data->config = i2c_smbus_read_byte_data(client,
> TMP421_CONFIG_REG_1);
>