Re: [PATCH v3 2/2] media: rockchip: rkisp1: extend uapi array sizes

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On Fri, 2021-01-15 at 12:23 +0100, Heiko Stuebner wrote:
> From: Heiko Stuebner <heiko.stuebner@xxxxxxxxxxxxxxxxxxxxx>
> 
> Later variants of the rkisp1 block use more entries in some arrays:
> 
> RKISP1_CIF_ISP_AE_MEAN_MAX                 25 -> 81
> RKISP1_CIF_ISP_HIST_BIN_N_MAX              16 -> 32
> RKISP1_CIF_ISP_GAMMA_OUT_MAX_SAMPLES       17 -> 34
> RKISP1_CIF_ISP_HISTOGRAM_WEIGHT_GRIDS_SIZE 28 -> 81
> 
> and we can still extend the uapi during the 5.11-rc cycle, so do that
> now to be on the safe side.
> 
> V10 and V11 only need the smaller sizes, while V12 and V13 needed
> the larger sizes.
> 
> When adding the bigger sizes make sure, values filled from hardware
> values and transmitted to userspace don't leak kernel data by zeroing
> them beforehand.
> 
> Signed-off-by: Heiko Stuebner <heiko.stuebner@xxxxxxxxxxxxxxxxxxxxx>

Reviewed-by: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx>

Thanks,
Ezequiel




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