From: Ian Armstrong <ian@iarmst.demon.co.uk>
Date: Tue, 26 Feb 2008 19:09:00 +0000 (-0300)
Subject: V4L/DVB (7279): ivtv: Add missing sg_init_table()
X-Git-Tag: v2.6.25-rc7~61^2~7
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=165e1213e13b49761f8b3fd9314701f83cf3db3a;p=linux-2.6

V4L/DVB (7279): ivtv: Add missing sg_init_table()

If a dma transfer is attempted for either yuv or framebuffer output, a missing
sg_init_table() call causes a kernel BUG in scatterlist.h if CONFIG_DEBUG_SG
is set.

Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
---

diff --git a/drivers/media/video/ivtv/ivtv-driver.c b/drivers/media/video/ivtv/ivtv-driver.c
index 9d36ab9991..948ca35e7e 100644
--- a/drivers/media/video/ivtv/ivtv-driver.c
+++ b/drivers/media/video/ivtv/ivtv-driver.c
@@ -699,6 +699,9 @@ static int __devinit ivtv_init_struct1(struct ivtv *itv)
 	itv->vbi.in.type = V4L2_BUF_TYPE_SLICED_VBI_CAPTURE;
 	itv->vbi.sliced_in = &itv->vbi.in.fmt.sliced;
 
+	/* Init the sg table for osd/yuv output */
+	sg_init_table(itv->udma.SGlist, IVTV_DMA_SG_OSD_ENT);
+
 	/* OSD */
 	itv->osd_global_alpha_state = 1;
 	itv->osd_global_alpha = 255;