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[media] vpif_capture.c: v4l2_device_register() is called too late in vpif_probe()

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The function v4l2_device_register() is called too late in vpif_probe().
This meant that vpif_obj.v4l2_dev is accessed before it is initialized
which caused a crash.

This used to work in the past, but video_register_device() is now actually
using the v4l2_dev pointer.

Note that vpif_display.c doesn't have this bug, there v4l2_device_register()
is called at the beginning of vpif_probe.

Signed-off-by: Georgios Plakaris <gplakari@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Manjunath Hadli <Manjunath.hadli@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2011-12-13 05:44:42 -03:00 committed by Mauro Carvalho Chehab
parent bb0a896e3d
commit d2f7a1a246
1 changed files with 7 additions and 7 deletions
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14
drivers/media/video/davinci/vpif_capture.c
View file

@ -2177,6 +2177,12 @@ static __init int vpif_probe(struct platform_device *pdev)
return err;
}
err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
if (err) {
v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
return err;
}
k = 0;
while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, k))) {
for (i = res->start; i <= res->end; i++) {
@ -2246,12 +2252,6 @@ static __init int vpif_probe(struct platform_device *pdev)
goto probe_out;
}
err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
if (err) {
v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
goto probe_subdev_out;
}
for (i = 0; i < subdev_count; i++) {
subdevdata = &config->subdev_info[i];
vpif_obj.sd[i] =
@ -2281,7 +2281,6 @@ static __init int vpif_probe(struct platform_device *pdev)
j = VPIF_CAPTURE_MAX_DEVICES;
probe_out:
v4l2_device_unregister(&vpif_obj.v4l2_dev);
for (k = 0; k < j; k++) {
/* Get the pointer to the channel object */
ch = vpif_obj.dev[k];
@ -2303,6 +2302,7 @@ static __init int vpif_probe(struct platform_device *pdev)
if (res)
i = res->end;
}
v4l2_device_unregister(&vpif_obj.v4l2_dev);
return err;
}