From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Sat, 9 Feb 2019 09:03:52 +0000 (+0300)
Subject: iio: chemical: sps30: fix a loop timeout test
X-Git-Tag: rel_imx_5.10.35_2.0.0-somdevices.0~5215^2~80^2~10
X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=905889b4a34c753a538015f0b2cdaa0c9e3a4fd5;p=linux.git

iio: chemical: sps30: fix a loop timeout test

The "while (tries--) {" loop is a postop so it exits with "tries" set
to -1.

Fixes: 232e0f6ddeae ("iio: chemical: add support for Sensirion SPS30 sensor")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---

diff --git a/drivers/iio/chemical/sps30.c b/drivers/iio/chemical/sps30.c
index e03a28a67146..375df5060ed5 100644
--- a/drivers/iio/chemical/sps30.c
+++ b/drivers/iio/chemical/sps30.c
@@ -210,7 +210,7 @@ static int sps30_do_meas(struct sps30_state *state, s32 *data, int size)
 		msleep_interruptible(300);
 	}
 
-	if (!tries)
+	if (tries == -1)
 		return -ETIMEDOUT;
 
 	ret = sps30_do_cmd(state, SPS30_READ_DATA, tmp, sizeof(int) * size);