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Upgrade to 4.4.50-rt62
[kvmfornfv.git] / kernel / drivers / media / usb / em28xx / em28xx-i2c.c
diff --git a/kernel/drivers/media/usb/em28xx/em28xx-i2c.c b/kernel/drivers/media/usb/em28xx/em28xx-i2c.c
index a19b5c8..1a9e1e5 100644 (file)
--- a/kernel/drivers/media/usb/em28xx/em28xx-i2c.c
+++ b/kernel/drivers/media/usb/em28xx/em28xx-i2c.c
@@ -507,9 +507,8 @@ static int em28xx_i2c_xfer(struct i2c_adapter *i2c_adap,
        if (dev->disconnected)
                return -ENODEV;
 
-       rc = rt_mutex_trylock(&dev->i2c_bus_lock);
-       if (rc < 0)
-               return rc;
+       if (!rt_mutex_trylock(&dev->i2c_bus_lock))
+               return -EAGAIN;
 
        /* Switch I2C bus if needed */
        if (bus != dev->cur_i2c_bus &&