---

yaml --- r: 219315 b: refs/heads/master c: 9bb7262 h: refs/heads/master i: 219313: 405fb2f 219311: 6823582 v: v3
git-mirror · Oct 21, 2010 · ef6f239 · ef6f239
1 parent 287f48a
commit ef6f239
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Showing 2 changed files with 10 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 11fc5baf1dab2d30f03a391cabc5fd1808cfbe29
+refs/heads/master: 9bb7262de9c077ccccb129f47d128edb7af5f92e
diff --git a/trunk/drivers/media/video/uvc/uvc_video.c b/trunk/drivers/media/video/uvc/uvc_video.c
@@ -138,6 +138,15 @@ static void uvc_fixup_video_ctrl(struct uvc_streaming *stream,
 			bandwidth /= 8;
 		bandwidth += 12;
 
+		/* The bandwidth estimate is too low for many cameras. Don't use
+		 * maximum packet sizes lower than 1024 bytes to try and work
+		 * around the problem. According to measurements done on two
+		 * different camera models, the value is high enough to get most
+		 * resolutions working while not preventing two simultaneous
+		 * VGA streams at 15 fps.
+		 */
+		bandwidth = max_t(u32, bandwidth, 1024);
+
 		ctrl->dwMaxPayloadTransferSize = bandwidth;
 	}
 }