From: Christian Gromm <christian.gromm@microchip.com>
Date: Tue, 8 May 2018 09:44:51 +0000 (+0200)
Subject: staging: most: i2c: prevent division by zero
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ceb1edc2a0a52b6f4285fbfc8f29a42b6109e52d;p=linux.git

staging: most: i2c: prevent division by zero

This prevents division by zero scan_rate.

The zero scan_rate does not need any special action as it actually means
"never poll again".

Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/most/i2c/i2c.c b/drivers/staging/most/i2c/i2c.c
index 141239fc9f51b..501eec0783a15 100644
--- a/drivers/staging/most/i2c/i2c.c
+++ b/drivers/staging/most/i2c/i2c.c
@@ -252,7 +252,7 @@ static void pending_rx_work(struct work_struct *work)
 	do_rx_work(dev);
 
 	if (dev->polling_mode) {
-		if (dev->is_open[CH_RX])
+		if (dev->is_open[CH_RX] && scan_rate)
 			schedule_delayed_work(&dev->rx.dwork,
 					      msecs_to_jiffies(MSEC_PER_SEC
 							       / scan_rate));