[media] Use a named union in struct v4l2_ioctl_info
Hi Mauro, struct v4l2_ioctl_info uses an anonymous union, which is initialized in the v4l2_ioctls table. Unfortunately gcc < 4.6 uses a non-standard syntax for that, so trying to compile v4l2-ioctl.c with an older gcc will fail. It is possible to work around this by testing the gcc version, but in this case it is easier to make the union named since it is used in only a few places. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reported-by: Randy Dunlap <rdunlap@xenotime.net> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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@ -1891,7 +1891,7 @@ struct v4l2_ioctl_info {
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u32 offset;
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int (*func)(const struct v4l2_ioctl_ops *ops,
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struct file *file, void *fh, void *p);
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};
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} u;
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void (*debug)(const void *arg, bool write_only);
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};
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@ -1916,7 +1916,7 @@ struct v4l2_ioctl_info {
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.ioctl = _ioctl, \
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.flags = _flags | INFO_FL_STD, \
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.name = #_ioctl, \
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.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
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.u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
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.debug = _debug, \
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}
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@ -1925,7 +1925,7 @@ struct v4l2_ioctl_info {
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.ioctl = _ioctl, \
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.flags = _flags | INFO_FL_FUNC, \
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.name = #_ioctl, \
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.func = _func, \
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.u.func = _func, \
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.debug = _debug, \
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}
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@ -2124,11 +2124,11 @@ static long __video_do_ioctl(struct file *file,
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if (info->flags & INFO_FL_STD) {
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typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
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const void *p = vfd->ioctl_ops;
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const vidioc_op *vidioc = p + info->offset;
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const vidioc_op *vidioc = p + info->u.offset;
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ret = (*vidioc)(file, fh, arg);
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} else if (info->flags & INFO_FL_FUNC) {
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ret = info->func(ops, file, fh, arg);
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ret = info->u.func(ops, file, fh, arg);
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} else if (!ops->vidioc_default) {
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ret = -ENOTTY;
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} else {
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