looks good to me.
Reviewed-by: wharms@xxxxxx
Am 26.02.2017 13:10, schrieb Christophe JAILLET:
> If a 'clk_prepare_enable()' fails, then we need to disable_unprepare the
> clk already handled.
>
> With the current implemenatation, we try to do that on the clk that has
> triggered the error, which is a no-op and leave msm_host->bus_clks[0]
> untouched.
>
> Count forward in order to fix it and be more future proof.
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
> ---
> v2: change the for loop from a backward to a forward one, to ease reading.
> ---
> drivers/gpu/drm/msm/dsi/dsi_host.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
> index 1fc07ce24686..e6f56cd8ce08 100644
> --- a/drivers/gpu/drm/msm/dsi/dsi_host.c
> +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
> @@ -422,7 +422,7 @@ static int dsi_clk_init(struct msm_dsi_host *msm_host)
> static int dsi_bus_clk_enable(struct msm_dsi_host *msm_host)
> {
> const struct msm_dsi_config *cfg = msm_host->cfg_hnd->cfg;
> - int i, ret;
> + int i, j, ret;
>
> DBG("id=%d", msm_host->id);
>
> @@ -437,8 +437,8 @@ static int dsi_bus_clk_enable(struct msm_dsi_host *msm_host)
>
> return 0;
> err:
> - for (; i > 0; i--)
> - clk_disable_unprepare(msm_host->bus_clks[i]);
> + for (j = 0; j < i; j++)
> + clk_disable_unprepare(msm_host->bus_clks[j]);
>
> return ret;
> }
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