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V4L/DVB (10544): v4l2-common: add comments warning that about the sort order

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Control arrays as are used with v4l2_ctrl_next must be sorted from
low to high. Add a comment at the top of all such arrays to warn
about this.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil
2009-02-13 10:57:48 -03:00
committed by Mauro Carvalho Chehab
parent 1b6f1d9603
commit 2ba588942c
8 changed files with 13 additions and 1 deletions
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drivers/media/video/v4l2-common.c
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@@ -749,7 +749,7 @@ EXPORT_SYMBOL(v4l2_ctrl_query_menu_valid_items);
/* ctrl_classes points to an array of u32 pointers, the last element is
a NULL pointer. Each u32 array is a 0-terminated array of control IDs.
Each array must be sorted low to high and belong to the same control
class. The array of u32 pointer must also be sorted, from low class IDs
class. The array of u32 pointers must also be sorted, from low class IDs
to high class IDs.
This function returns the first ID that follows after the given ID.