[media] ttusbir: ad support suspend and resume

While here, fix the led name: the led is green, not yellow.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 44 insertions, 4 deletions

diff --git a/drivers/media/rc/ttusbir.c b/drivers/media/rc/ttusbir.c
index 1aee57fd2f32..fef05235234a 100644
--- a/drivers/media/rc/ttusbir.c
+++ b/drivers/media/rc/ttusbir.c
@@ -66,11 +66,11 @@ static void ttusbir_set_led(struct ttusbir *tt)
 
         smp_mb();
 
-        if (tt->led_on != tt->is_led_on &&
+        if (tt->led_on != tt->is_led_on && tt->udev &&
                                 atomic_add_unless(&tt->led_complete, 1, 1)) {
                 tt->bulk_buffer[4] = tt->is_led_on = tt->led_on;
                 ret = usb_submit_urb(tt->bulk_urb, GFP_ATOMIC);
-                if (ret && ret != -ENODEV) {
+                if (ret) {
                         dev_warn(tt->dev, "failed to submit bulk urb: %d\n",
                                                                         ret);
                         atomic_dec(&tt->led_complete);
@@ -300,7 +300,7 @@ static int __devinit ttusbir_probe(struct usb_interface *intf,
                 tt->bulk_out_endp), tt->bulk_buffer, sizeof(tt->bulk_buffer),
                                                 ttusbir_bulk_complete, tt);
 
-        tt->led.name = "ttusbir:yellow:power";
+        tt->led.name = "ttusbir:green:power";
         tt->led.brightness_set = ttusbir_brightness_set;
         tt->led.brightness_get = ttusbir_brightness_get;
         tt->is_led_on = tt->led_on = true;
@@ -370,13 +370,16 @@ out:
 static void __devexit ttusbir_disconnect(struct usb_interface *intf)
 {
         struct ttusbir *tt = usb_get_intfdata(intf);
+        struct usb_device *udev = tt->udev;
         int i;
 
+        tt->udev = NULL;
+
         rc_unregister_device(tt->rc);
         led_classdev_unregister(&tt->led);
         for (i = 0; i < NUM_URBS; i++) {
                 usb_kill_urb(tt->urb[i]);
-                usb_free_coherent(tt->udev, 128, tt->urb[i]->transfer_buffer,
+                usb_free_coherent(udev, 128, tt->urb[i]->transfer_buffer,
                                                 tt->urb[i]->transfer_dma);
                 usb_free_urb(tt->urb[i]);
         }
@@ -386,6 +389,40 @@ static void __devexit ttusbir_disconnect(struct usb_interface *intf)
         kfree(tt);
 }
 
+static int ttusbir_suspend(struct usb_interface *intf, pm_message_t message)
+{
+        struct ttusbir *tt = usb_get_intfdata(intf);
+        int i;
+
+        for (i = 0; i < NUM_URBS; i++)
+                usb_kill_urb(tt->urb[i]);
+
+        led_classdev_suspend(&tt->led);
+        usb_kill_urb(tt->bulk_urb);
+
+        return 0;
+}
+
+static int ttusbir_resume(struct usb_interface *intf)
+{
+        struct ttusbir *tt = usb_get_intfdata(intf);
+        int i, rc;
+
+        led_classdev_resume(&tt->led);
+        tt->is_led_on = true;
+        ttusbir_set_led(tt);
+
+        for (i = 0; i < NUM_URBS; i++) {
+                rc = usb_submit_urb(tt->urb[i], GFP_KERNEL);
+                if (rc) {
+                        dev_warn(tt->dev, "failed to submit urb: %d\n", rc);
+                        break;
+                }
+        }
+
+        return rc;
+}
+
 static const struct usb_device_id ttusbir_table[] = {
         { USB_DEVICE(0x0b48, 0x2003) },
         { }
@@ -395,6 +432,9 @@ static struct usb_driver ttusbir_driver = {
         .name = DRIVER_NAME,
         .id_table = ttusbir_table,
         .probe = ttusbir_probe,
+        .suspend = ttusbir_suspend,
+        .resume = ttusbir_resume,
+        .reset_resume = ttusbir_resume,
         .disconnect = __devexit_p(ttusbir_disconnect)
 };