[PATCH] drm/gma500: fix a missing break in psb_driver_load
Patrik Jakobsson
patrik.r.jakobsson at gmail.com
Wed Apr 6 07:27:19 UTC 2022
On Fri, Apr 1, 2022 at 1:58 PM Xiaomeng Tong <xiam0nd.tong at gmail.com> wrote:
>
> Instead of exiting the loop as expected when an entry is found, the
> list_for_each_entry() continues until the traversal is complete. To
> avoid potential executing 'ret = gma_backlight_init(dev);' repeatly,
> break the loop when the entry is found.
>
> Signed-off-by: Xiaomeng Tong <xiam0nd.tong at gmail.com>
> ---
> drivers/gpu/drm/gma500/psb_drv.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c
> index 2aff54d505e2..b61a8b0eea38 100644
> --- a/drivers/gpu/drm/gma500/psb_drv.c
> +++ b/drivers/gpu/drm/gma500/psb_drv.c
> @@ -402,6 +402,9 @@ static int psb_driver_load(struct drm_device *dev, unsigned long flags)
> ret = gma_backlight_init(dev);
> break;
> }
> +
> + if (!ret)
> + break;
Hi,
We cannot do it like this either. If the first connector isn't LVDS or
MIPI we would just break out of the iteration because ret is
presumably 0 at start and gma_backlight_init() would never run.
-Patrik
> }
> drm_connector_list_iter_end(&conn_iter);
>
> --
> 2.17.1
>
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