usbvision: remove broken YUV format conversion

diff -up linux-2.6.39-rc2-/drivers/media/video/usbvision/usbvision-core.c linux-2.6.39-rc2/drivers/media/video/usbvision/usbvision-core.c
@@ -801,12 +801,7 @@ static enum parse_state usbvision_parse_
 
 	frame = usbvision->cur_frame;
 	image_size = frame->frmwidth * frame->frmheight;
-	if ((frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) ||
-	    (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420)) {       /* this is a planar format */
-		/* ... v4l2_linesize not used here. */
-		f = frame->data + (frame->width * frame->curline);
-	} else
-		f = frame->data + (frame->v4l2_linesize * frame->curline);
+	f = frame->data + (frame->v4l2_linesize * frame->curline);
 
 	if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { /* initialise u and v pointers */
 		/* get base of u and b planes add halfoffset */

@@ -814,9 +809,6 @@ static enum parse_state usbvision_parse_
 			+ image_size
 			+ (frame->frmwidth >> 1) * frame->curline;
 		v = u + (image_size >> 1);
-	} else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) {
-		v = frame->data + image_size + ((frame->curline * (frame->width)) >> 2);
-		u = v + (image_size >> 2);
 	}
 
 	if (frame->curline == 0)

@@ -891,20 +883,6 @@ static enum parse_state usbvision_parse_
 		if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
 			*f++ = Y[idx];
 			*f++ = idx & 0x01 ? U[idx / 2] : V[idx / 2];
-		} else if (frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) {
-			*f++ = Y[idx];
-			if (idx & 0x01)
-				*u++ = U[idx >> 1];
-			else
-				*v++ = V[idx >> 1];
-		} else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) {
-			*f++ = Y[idx];
-			if (!((idx & 0x01) | (frame->curline & 0x01))) {
-				/* only need do this for 1 in 4 pixels */
-				/* intraframe buffer is YUV420 format */
-				*u++ = U[idx >> 1];
-				*v++ = V[idx >> 1];
-			}
 		} else {
 			YUV_TO_RGB_BY_THE_BOOK(Y[idx], U[idx / 2], V[idx / 2], rv, gv, bv);
 			switch (frame->v4l2_format.format) {

@@ -938,11 +916,7 @@ static enum parse_state usbvision_parse_
 		}
 		clipmask_index++;
 	}
-	/* Deal with non-integer no. of bytes for YUV420P */
-	if (frame->v4l2_format.format != V4L2_PIX_FMT_YVU420)
-		*pcopylen += frame->v4l2_linesize;
-	else
-		*pcopylen += frame->curline & 0x01 ? frame->v4l2_linesize : frame->v4l2_linesize << 1;
+	*pcopylen += frame->v4l2_linesize;
 
 	frame->curline += 1;
 

diff -up linux-2.6.39-rc2-/drivers/media/video/usbvision/usbvision-video.c linux-2.6.39-rc2/drivers/media/video/usbvision/usbvision-video.c
@@ -118,8 +118,6 @@ static struct usbvision_v4l2_format_st u
 	{ 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 	{ 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 	{ 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
-	{ 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, /* 1.5 ! */
-	{ 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 };
 
 /* Function prototypes */

@@ -888,7 +886,7 @@ static int vidioc_streamoff(struct file
 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
 					struct v4l2_fmtdesc *vfd)
 {
-	if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
+	if (vfd->index > USBVISION_SUPPORTED_PALETTES - 1)
 		return -EINVAL;
 	strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
 	vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;

@@ -1659,13 +1657,6 @@ static int __init usbvision_init(void)
 	PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
 	PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
 
-	/* disable planar mode support unless compression enabled */
-	if (isoc_mode != ISOC_MODE_COMPRESS) {
-		/* FIXME : not the right way to set supported flag */
-		usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
-		usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
-	}
-
 	err_code = usb_register(&usbvision_driver);
 
 	if (err_code == 0) {