On 04.05.2018 16:37, Thierry Reding wrote:
> From: Thierry Reding <treding@xxxxxxxxxx>
>
> Failure to register the Tegra DRM client would leak the resources. Move
> cleanup code to error unwinding gotos to fix that and share the cleanup
> code with the other error paths.
>
> Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
> ---
> drivers/gpu/drm/tegra/gr2d.c | 28 ++++++++++++++++++++++------
> 1 file changed, 22 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/tegra/gr2d.c b/drivers/gpu/drm/tegra/gr2d.c
> index 8eb530a85dd0..0b42e99da8ad 100644
> --- a/drivers/gpu/drm/tegra/gr2d.c
> +++ b/drivers/gpu/drm/tegra/gr2d.c
> @@ -42,8 +42,9 @@ static int gr2d_init(struct host1x_client *client)
>
> client->syncpts[0] = host1x_syncpt_request(client, flags);
> if (!client->syncpts[0]) {
> - host1x_channel_put(gr2d->channel);
> - return -ENOMEM;
> + err = -ENOMEM;
> + dev_err(client->dev, "failed to request syncpoint: %d\n", err);
> + goto put;
> }
>
> if (tegra->domain) {
> @@ -55,15 +56,30 @@ static int gr2d_init(struct host1x_client *client)
> dev_err(client->dev,
> "failed to attach to domain: %d\n",
> err);
> - host1x_syncpt_free(client->syncpts[0]);
> - host1x_channel_put(gr2d->channel);
> iommu_group_put(gr2d->group);
> - return err;
> + goto free;
> }
> }
> }
>
> - return tegra_drm_register_client(tegra, drm);
> + err = tegra_drm_register_client(tegra, drm);
> + if (err < 0) {
> + dev_err(client->dev, "failed to register client: %d\n", err);
> + goto detach;
> + }
> +
> + return 0;
> +
> +detach:
> + if (gr2d->group) {
> + iommu_detach_group(tegra->domain, gr2d->group);
> + iommu_group_put(gr2d->group);
> + }
> +free:
> + host1x_syncpt_free(client->syncpts[0]);
> +put:
> + host1x_channel_put(gr2d->channel);
> + return err;
> }
>
> static int gr2d_exit(struct host1x_client *client)
>
Reviewed-by: Dmitry Osipenko <digetx@xxxxxxxxx>
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