On Wed, Jun 19, 2019 at 01:01:41PM +0300, Dan Carpenter wrote:
> This test is flipped around so it either leads to a memory leak or a
> NULL dereference.
>
> Fixes: 1452c25b0e60 ("drm: Add helpers to kick off self refresh mode in drivers")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Thanks for the patch and your bug report! I've applied this to -misc-next and
will dig into the bug report shortly.
> ---
> I'm not totally sure what the prefered patch prefix for this code. One
> thing that would help is when we're adding new files we should specify
> the prefix that they're going to use:
>
> - drm: Add helpers to kick off self refresh mode in drivers
> + drm: refresh mode: Add helpers to kick off self refresh mode in drivers
>
> It's a small thing and email always sounds whiny but I'm sending this
> suggestion to everyone today so...
There's no hard rule. For drivers we use drm/<driver>, and for core people
use drm or drm/<file>.
>
> drivers/gpu/drm/drm_self_refresh_helper.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/drm_self_refresh_helper.c b/drivers/gpu/drm/drm_self_refresh_helper.c
> index 2b3daaf77841..e0d2ad1f070c 100644
> --- a/drivers/gpu/drm/drm_self_refresh_helper.c
> +++ b/drivers/gpu/drm/drm_self_refresh_helper.c
> @@ -205,7 +205,7 @@ void drm_self_refresh_helper_cleanup(struct drm_crtc *crtc)
> struct drm_self_refresh_data *sr_data = crtc->self_refresh_data;
>
> /* Helper is already uninitialized */
> - if (sr_data)
> + if (!sr_data)
> return;
>
> crtc->self_refresh_data = NULL;
> --
> 2.20.1
>
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--
Sean Paul, Software Engineer, Google / Chromium OS
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