On Wed, Dec 28, 2022 at 02:28:54PM +0200, Mikko Perttunen wrote: > On 12/27/22 19:14, Deepak R Varma wrote: > > kfree() & vfree() internally perform NULL check on the pointer handed > > to it and take no action if it indeed is NULL. Hence there is no need > > for a pre-check of the memory pointer before handing it to > > kfree()/vfree(). > > > > Issue reported by ifnullfree.cocci Coccinelle semantic patch script. > > > > Signed-off-by: Deepak R Varma <drv@xxxxxxxxx> > > --- > > drivers/gpu/drm/tegra/submit.c | 4 ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/gpu/drm/tegra/submit.c b/drivers/gpu/drm/tegra/submit.c > > index 066f88564169..06f836db99d0 100644 > > --- a/drivers/gpu/drm/tegra/submit.c > > +++ b/drivers/gpu/drm/tegra/submit.c > > @@ -680,8 +680,8 @@ int tegra_drm_ioctl_channel_submit(struct drm_device *drm, void *data, > > kfree(job_data->used_mappings); > > } > > > > - if (job_data) > > - kfree(job_data); > > + kfree(job_data); > > + > > put_bo: > > gather_bo_put(&bo->base); > > unlock: > > -- > > 2.34.1 > > > > > > > > It continues to be the case that I think this transform is bad. Same applies > to the host1x patch. Hello Mikko, Thank you for responding to the patch proposal. Could you please explain why is this bad? Regards, ./drv > > Mikko
