From: Nicolin Chen <nicoleotsuka@gmail.com>
To: jdelvare@suse.com, linux@roeck-us.net
Cc: linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] hwmon: (ina3221) Fix read timeout issue
Date: Mon, 21 Oct 2019 17:59:22 -0700 [thread overview]
Message-ID: <20191022005922.30239-1-nicoleotsuka@gmail.com> (raw)
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: 5c090abf945b ("hwmon: (ina3221) Add averaging mode support")
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
---
drivers/hwmon/ina3221.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hwmon/ina3221.c b/drivers/hwmon/ina3221.c
index ef37479991be..f335d0cb0c77 100644
--- a/drivers/hwmon/ina3221.c
+++ b/drivers/hwmon/ina3221.c
@@ -213,7 +213,7 @@ 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,
--
2.17.1
next reply other threads:[~2019-10-22 0:59 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-22 0:59 Nicolin Chen [this message]
2019-10-29 1:47 ` [PATCH] hwmon: (ina3221) Fix read timeout issue Guenter Roeck
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