media: uvcvideo: Fix annotation for uvc_video_clock_update()
The formula (2) is to convert from SOF to host clock, it should be fix as "TS = ((TS2 - TS1) * SOF + TS1 * SOF2 - TS2 * SOF1) / (SOF2 - SOF1)" Signed-off-by: Jun Chen <jun.chen@vatics.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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@ -622,7 +622,7 @@ static u16 uvc_video_clock_host_sof(const struct uvc_clock_sample *sample)
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* to avoid losing precision in the division. Similarly, the host timestamp is
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* computed with
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*
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* TS = ((TS2 - TS1) * PTS + TS1 * SOF2 - TS2 * SOF1) / (SOF2 - SOF1) (2)
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* TS = ((TS2 - TS1) * SOF + TS1 * SOF2 - TS2 * SOF1) / (SOF2 - SOF1) (2)
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*
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* SOF values are coded on 11 bits by USB. We extend their precision with 16
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* decimal bits, leading to a 11.16 coding.
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