On Tuesday, 10 December 2019 06:10:34 GMT james qian wang (Arm Technology 
China) wrote:
> Per HW, d71->num_blocks includes reserved blocks but no PERIPH block,
> correct the block counting accordingly.
> D71 happens to only have one reserved block and periph block, which
> hides this counting error.
> 
> Signed-off-by: james qian wang (Arm Technology China) 
> <[email protected]>
> ---
>  drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c 
> b/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c
> index 822b23a1ce75..d53f95dea0a1 100644
> --- a/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c
> +++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_dev.c
> @@ -414,8 +414,11 @@ static int d71_enum_resources(struct komeda_dev *mdev)
>               d71->pipes[i] = to_d71_pipeline(pipe);
>       }
>  
> -     /* loop the register blks and probe */
> -     i = 2; /* exclude GCU and PERIPH */
> +     /* loop the register blks and probe.
> +      * NOTE: d71->num_blocks includes reserved blocks.
> +      * d71->num_blocks = GCU + valid blocks + reserved blocks
> +      */
> +     i = 1; /* exclude GCU */
>       offset = D71_BLOCK_SIZE; /* skip GCU */
>       while (i < d71->num_blocks) {
>               blk_base = mdev->reg_base + (offset >> 2);
> @@ -425,9 +428,9 @@ static int d71_enum_resources(struct komeda_dev *mdev)
>                       err = d71_probe_block(d71, &blk, blk_base);
>                       if (err)
>                               goto err_cleanup;
> -                     i++;
>               }
>  
> +             i++;
>               offset += D71_BLOCK_SIZE;
>       }
>  
> 

Reviewed-by: Mihail Atanassov <[email protected]>

-- 
Mihail



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