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 141239f..501eec0 100644 (file)
--- 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));