linux-kernel - [PATCH] iio: light: opt3001: Fixed timeout error when 0 lux

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 20 Sep 2021 14:53:48 +0200
From:   Jiri Valek - 2N <valek@...cz>
To:     <jic23@...nel.org>
CC:     Jiri Valek - 2N <valek@...cz>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Gwendal Grignou <gwendal@...omium.org>,
        <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] iio: light: opt3001: Fixed timeout error when 0 lux

Reading from sensor returned timeout error under
zero light conditions.

Signed-off-by: Jiri Valek - 2N <valek@...cz>
---
 drivers/iio/light/opt3001.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/light/opt3001.c b/drivers/iio/light/opt3001.c
index 52963da401a7..1880bd5bb258 100644
--- a/drivers/iio/light/opt3001.c
+++ b/drivers/iio/light/opt3001.c
@@ -276,6 +276,8 @@ static int opt3001_get_lux(struct opt3001 *opt, int *val, int *val2)
 		ret = wait_event_timeout(opt->result_ready_queue,
 				opt->result_ready,
 				msecs_to_jiffies(OPT3001_RESULT_READY_LONG));
+		if (ret == 0)
+			return -ETIMEDOUT;
 	} else {
 		/* Sleep for result ready time */
 		timeout = (opt->int_time == OPT3001_INT_TIME_SHORT) ?
@@ -312,9 +314,7 @@ static int opt3001_get_lux(struct opt3001 *opt, int *val, int *val2)
 		/* Disallow IRQ to access the device while lock is active */
 		opt->ok_to_ignore_lock = false;
 
-	if (ret == 0)
-		return -ETIMEDOUT;
-	else if (ret < 0)
+	if (ret < 0)
 		return ret;
 
 	if (opt->use_irq) {
-- 
2.20.1