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From: Crt Mori <cmo@melexis.com>
To: Jonathan Cameron <jic23@kernel.org>
Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
	Crt Mori <cmo@melexis.com>,
	Andy Shevchenko <andy.shevchenko@gmail.com>
Subject: [PATCH v5 3/5] iio:temperature:mlx90632: Convert polling while loop to do-while
Date: Thu, 13 Aug 2020 09:51:23 +0200	[thread overview]
Message-ID: <20200813075125.4949-4-cmo@melexis.com> (raw)
In-Reply-To: <20200813075125.4949-1-cmo@melexis.com>

Reduce number of lines and improve readability to convert polling while
loops to do-while. The iopoll.h interface was not used, because we
require more than 20ms timeout, because time for sensor to perform a
measurement is around 10ms and it needs to perform measurements for each
channel (which currently is 3).

Signed-off-by: Crt Mori <cmo@melexis.com>
---
 drivers/iio/temperature/mlx90632.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/iio/temperature/mlx90632.c b/drivers/iio/temperature/mlx90632.c
index ce75f5a3486b..d87c792b7e72 100644
--- a/drivers/iio/temperature/mlx90632.c
+++ b/drivers/iio/temperature/mlx90632.c
@@ -188,15 +188,13 @@ static int mlx90632_perform_measurement(struct mlx90632_data *data)
 	if (ret < 0)
 		return ret;
 
-	while (tries-- > 0) {
+	do {
 		ret = regmap_read(data->regmap, MLX90632_REG_STATUS,
 				  &reg_status);
 		if (ret < 0)
 			return ret;
-		if (reg_status & MLX90632_STAT_DATA_RDY)
-			break;
 		usleep_range(10000, 11000);
-	}
+	} while (!(reg_status & MLX90632_STAT_DATA_RDY) && tries--);
 
 	if (tries < 0) {
 		dev_err(&data->client->dev, "data not ready");
-- 
2.25.1


  parent reply	other threads:[~2020-08-13  7:53 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-13  7:51 [PATCH v5 0/5] iio: temperature: mlx90632: Add extended calibration calculations Crt Mori
2020-08-13  7:51 ` [PATCH v5 1/5] iio:temperature:mlx90632: Reduce number of equal calulcations Crt Mori
2020-08-13  7:51 ` [PATCH v5 2/5] iio:temperature:mlx90632: Add kerneldoc to the internal struct Crt Mori
2020-08-13 10:54   ` Andy Shevchenko
2020-08-13  7:51 ` Crt Mori [this message]
2020-08-13 11:03   ` [PATCH v5 3/5] iio:temperature:mlx90632: Convert polling while loop to do-while Andy Shevchenko
2020-08-13 11:13     ` Crt Mori
2020-08-13 11:24       ` Andy Shevchenko
2020-08-13 13:03         ` Crt Mori
2020-08-13 19:40           ` Andy Shevchenko
2020-08-14  7:32             ` Crt Mori
2020-08-14  9:31               ` Andy Shevchenko
2020-08-14  9:42                 ` Crt Mori
2020-08-14 12:11                   ` Andy Shevchenko
2020-08-13  7:51 ` [PATCH v5 4/5] iio:temperature:mlx90632: Adding extended calibration option Crt Mori
2020-08-13 11:06   ` Andy Shevchenko
2020-08-13  7:51 ` [PATCH v5 5/5] iio:temperature:mlx90632: Some stylefixing leftovers Crt Mori
2020-08-13 11:01   ` Andy Shevchenko
2020-08-13 13:11     ` Crt Mori
2020-08-13 19:41       ` Andy Shevchenko
2020-08-16  8:38         ` Jonathan Cameron

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