disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/include/media/v4l2-dv-timings.h
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..
@@ -10,6 +10,17 @@
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 #include <linux/videodev2.h>
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+/**
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+ * v4l2_calc_timeperframe - helper function to calculate timeperframe based
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+ *	v4l2_dv_timings fields.
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+ * @t: Timings for the video mode.
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+ *
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+ * Calculates the expected timeperframe using the pixel clock value and
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+ * horizontal/vertical measures. This means that v4l2_dv_timings structure
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+ * must be correctly and fully filled.
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+ */
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+struct v4l2_fract v4l2_calc_timeperframe(const struct v4l2_dv_timings *t);
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+
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 /*
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  * v4l2_dv_timings_presets: list of all dv_timings presets.
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  */