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hwmon: (ina3221) Fix read timeout issue 

After introducing "samples" to the calculation of wait time, the
driver might timeout at the regmap_field_read_poll_timeout call,
because the wait time could be longer than the 100000 usec limit
due to a large "samples" number.

So this patch sets the timeout limit to 2 times of the wait time
in order to fix this issue.

Fixes: 5c090abf94 ("hwmon: (ina3221) Add averaging mode support")
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/20191022005922.30239-1-nicoleotsuka@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Nicolin Chen 2019-10-21 17:59:22 -07:00 committed by Guenter Roeck
parent 6fc28b7e0a
commit 2ccb4f16d0
1 changed files with 1 additions and 1 deletions
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2
drivers/hwmon/ina3221.c
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@ -170,7 +170,7 @@ static inline int ina3221_wait_for_data(struct ina3221_data *ina)
/* Polling the CVRF bit to make sure read data is ready */
return regmap_field_read_poll_timeout(ina->fields[F_CVRF],
cvrf, cvrf, wait, 100000);
cvrf, cvrf, wait, wait * 2);
}
static int ina3221_read_value(struct ina3221_data *ina, unsigned int reg,