[media] redrat3: errors on unplug

In an usb disconnect handler, the urbs have already been cancelled so the
attempt to disable the IR receiver just results in errors:
[  899.638862] redrat3 7-2:1.0: redrat3_send_cmd: Error sending rr3 cmd res -110, data 0
[  899.638870] redrat3 7-2:1.0: redrat3_disable_detector: detector status: 251, should be 0

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 0 insertions, 27 deletions

diff --git a/drivers/media/rc/redrat3.c b/drivers/media/rc/redrat3.c
index 12167a6b5472..37494433dc9f 100644
--- a/drivers/media/rc/redrat3.c
+++ b/drivers/media/rc/redrat3.c
@@ -206,8 +206,6 @@ struct redrat3_dev {
         struct timer_list rx_timeout;
         u32 hw_timeout;
 
-        /* is the detector enabled*/
-        bool det_enabled;
         /* Is the device currently transmitting?*/
         bool transmitting;
 
@@ -472,32 +470,11 @@ static int redrat3_enable_detector(struct redrat3_dev *rr3)
                 return -EIO;
         }
 
-        rr3->det_enabled = true;
         redrat3_issue_async(rr3);
 
         return 0;
 }
 
-/* Disables the rr3 long range detector */
-static void redrat3_disable_detector(struct redrat3_dev *rr3)
-{
-        struct device *dev = rr3->dev;
-        u8 ret;
-
-        rr3_ftr(dev, "Entering %s\n", __func__);
-
-        ret = redrat3_send_cmd(RR3_RC_DET_DISABLE, rr3);
-        if (ret != 0)
-                dev_err(dev, "%s: failure!\n", __func__);
-
-        ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3);
-        if (ret != 0)
-                dev_warn(dev, "%s: detector status: %d, should be 0\n",
-                         __func__, ret);
-
-        rr3->det_enabled = false;
-}
-
 static inline void redrat3_delete(struct redrat3_dev *rr3,
                                   struct usb_device *udev)
 {
@@ -788,7 +765,6 @@ static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf,
         count = min_t(unsigned, count, RR3_MAX_SIG_SIZE - RR3_TX_TRAILER_LEN);
 
         /* rr3 will disable rc detector on transmit */
-        rr3->det_enabled = false;
         rr3->transmitting = true;
 
         sample_lens = kzalloc(sizeof(int) * RR3_DRIVER_MAXLENS, GFP_KERNEL);
@@ -868,7 +844,6 @@ out:
 
         rr3->transmitting = false;
         /* rr3 re-enables rc detector because it was enabled before */
-        rr3->det_enabled = true;
 
         return ret;
 }
@@ -1048,8 +1023,6 @@ static void redrat3_dev_disconnect(struct usb_interface *intf)
         if (!rr3)
                 return;
 
-        redrat3_disable_detector(rr3);
-
         usb_set_intfdata(intf, NULL);
         rc_unregister_device(rr3->rc);
         del_timer_sync(&rr3->rx_timeout);