| Message ID | 20230109022038.2163-1-jiasheng@iscas.ac.cn (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] drm/msm: Add missing check and destroy for alloc_ordered_workqueue | expand |
On 09/01/2023 04:20, Jiasheng Jiang wrote: > Add check for the return value of alloc_ordered_workqueue as it may return > NULL pointer. > Moreover, use the destroy_workqueue in the later fails in order to avoid > memory leak. > > Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> > --- > Changelog: > > v1 -> v2: > > 1. Convert "goto err_destroy_workqueue" into "goto err_msm_unit" and > remove "err_destroy_workqueue" label. > --- > drivers/gpu/drm/msm/msm_drv.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
On Mon, 09 Jan 2023 10:20:38 +0800, Jiasheng Jiang wrote: > Add check for the return value of alloc_ordered_workqueue as it may return > NULL pointer. > Moreover, use the destroy_workqueue in the later fails in order to avoid > memory leak. > > Applied, thanks! [1/1] drm/msm: Add missing check and destroy for alloc_ordered_workqueue https://gitlab.freedesktop.org/lumag/msm/-/commit/643b7d0869cc Best regards,
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 8b0b0ac74a6f..54be323ed33d 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -418,6 +418,8 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv) priv->dev = ddev; priv->wq = alloc_ordered_workqueue("msm", 0); + if (!priv->wq) + return -ENOMEM; INIT_LIST_HEAD(&priv->objects); mutex_init(&priv->obj_lock); @@ -440,12 +442,12 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv) ret = msm_init_vram(ddev); if (ret) - return ret; + goto err_msm_uninit; /* Bind all our sub-components: */ ret = component_bind_all(dev, ddev); if (ret) - return ret; + goto err_msm_uninit; dma_set_max_seg_size(dev, UINT_MAX);
Add check for the return value of alloc_ordered_workqueue as it may return NULL pointer. Moreover, use the destroy_workqueue in the later fails in order to avoid memory leak. Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> --- Changelog: v1 -> v2: 1. Convert "goto err_destroy_workqueue" into "goto err_msm_unit" and remove "err_destroy_workqueue" label. --- drivers/gpu/drm/msm/msm_drv.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)