FAILED: patch "[PATCH] [media] vb2-core: call threadio->fnc() if" failed to apply to 4.4-stable tree

The patch below does not apply to the 4.4-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From: Mauro Carvalho Chehab <[email protected]>
Date: Wed, 3 Feb 2016 19:30:31 -0200
Subject: [PATCH] [media] vb2-core: call threadio->fnc() if
!VB2_BUF_STATE_ERROR

changeset 70433a152f0 ("media: videobuf2: Refactor vb2_fileio_data and vb2_thread") broke videobuf2-dvb.

The root cause is that, instead of calling threadio->fnc() for all types of events except for VB2_BUF_STATE_ERROR, it was calling it only for VB2_BUF_STATE_DONE.

With that, the DVB thread were never called.

index b53e42c329cb..ff8953ae52d1 100644
@@ -2742,7 +2742,7 @@ static int vb2_thread(void *data)
 			break;
 		try_to_freeze();
 
-		if (vb->state == VB2_BUF_STATE_DONE)
+		if (vb->state != VB2_BUF_STATE_ERROR)
 			if (threadio->fnc(vb, threadio->priv))
 				break;
 		call_void_qop(q, wait_finish, q);