[PATCH 2/3] drm/msm/dsi: fix off by one in dsi_bus_clk_enable error handling

[Dmitry Baryshkov]

On 01/10/2021 15:34, Dan Carpenter wrote:
> This disables a lock which wasn't enabled and it does not disable
> the first lock in the array.
> 
> Fixes: 6e0eb52eba9e ("drm/msm/dsi: Parse bus clocks from a list")
> Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>

We should probably switch this to bulk clk api.

> ---
>   drivers/gpu/drm/msm/dsi/dsi_host.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
> index e269df285136..c86b5090fae6 100644
> --- a/drivers/gpu/drm/msm/dsi/dsi_host.c
> +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
> @@ -451,7 +451,7 @@ static int dsi_bus_clk_enable(struct msm_dsi_host *msm_host)
>   
>   	return 0;
>   err:
> -	for (; i > 0; i--)
> +	while (--i >= 0)
>   		clk_disable_unprepare(msm_host->bus_clks[i]);
>   
>   	return ret;
> 


-- 
With best wishes
Dmitry