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V4L/DVB: ivtvfb : Module load / unload fixes

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Check firmware state when loading module & if firmware is not responding exit
with an error. When module is unloaded, only disable the framebuffer & not all
decoder output.

Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Ian Armstrong 2010-05-23 22:10:30 -03:00 committed by Mauro Carvalho Chehab
parent 064a2485aa
commit 5f39b9f660
1 changed files with 11 additions and 3 deletions
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14
drivers/media/video/ivtv/ivtvfb.c
View file

@ -1066,7 +1066,11 @@ static int ivtvfb_init_io(struct ivtv *itv)
}
mutex_unlock(&itv->serialize_lock);
ivtvfb_get_framebuffer(itv, &oi->video_rbase, &oi->video_buffer_size);
if (ivtvfb_get_framebuffer(itv, &oi->video_rbase,
&oi->video_buffer_size) < 0) {
IVTVFB_ERR("Firmware failed to respond\n");
return -EIO;
}
/* The osd buffer size depends on the number of video buffers allocated
on the PVR350 itself. For now we'll hardcode the smallest osd buffer
@ -1158,8 +1162,11 @@ static int ivtvfb_init_card(struct ivtv *itv)
}
/* Find & setup the OSD buffer */
if ((rc = ivtvfb_init_io(itv)))
rc = ivtvfb_init_io(itv);
if (rc) {
ivtvfb_release_buffers(itv);
return rc;
}
/* Set the startup video mode information */
if ((rc = ivtvfb_init_vidmode(itv))) {
@ -1210,6 +1217,7 @@ static int ivtvfb_callback_cleanup(struct device *dev, void *p)
{
struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
struct ivtv *itv = container_of(v4l2_dev, struct ivtv, v4l2_dev);
struct osd_info *oi = itv->osd_info;
if (itv && (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) {
if (unregister_framebuffer(&itv->osd_info->ivtvfb_info)) {
@ -1218,7 +1226,7 @@ static int ivtvfb_callback_cleanup(struct device *dev, void *p)
return 0;
}
IVTVFB_INFO("Unregister framebuffer %d\n", itv->instance);
ivtvfb_blank(FB_BLANK_POWERDOWN, &itv->osd_info->ivtvfb_info);
ivtvfb_blank(FB_BLANK_VSYNC_SUSPEND, &oi->ivtvfb_info);
ivtvfb_release_buffers(itv);
itv->osd_video_pbase = 0;
}