Messages in this thread | | | Date | Tue, 10 Jan 2023 10:54:58 -0500 | Subject | Re: [PATCH] drm/amd/display: No need for Null pointer check before kfree | From | Rodrigo Siqueira Jordao <> |
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On 12/27/22 13:39, Deepak R Varma wrote: > kfree() & vfree() internally performs 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@mailo.com> > --- > drivers/gpu/drm/amd/display/dc/clk_mgr/dcn30/dcn30_clk_mgr.c | 3 +-- > drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c | 3 +-- > 2 files changed, 2 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn30/dcn30_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn30/dcn30_clk_mgr.c > index 3ce0ee0d012f..694a9d3d92ae 100644 > --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn30/dcn30_clk_mgr.c > +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn30/dcn30_clk_mgr.c > @@ -577,8 +577,7 @@ void dcn3_clk_mgr_construct( > > void dcn3_clk_mgr_destroy(struct clk_mgr_internal *clk_mgr) > { > - if (clk_mgr->base.bw_params) > - kfree(clk_mgr->base.bw_params); > + kfree(clk_mgr->base.bw_params); > > if (clk_mgr->wm_range_table) > dm_helpers_free_gpu_mem(clk_mgr->base.ctx, DC_MEM_ALLOC_TYPE_GART, > diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c > index 200fcec19186..ba9814f88f48 100644 > --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c > +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c > @@ -783,8 +783,7 @@ void dcn32_clk_mgr_construct( > > void dcn32_clk_mgr_destroy(struct clk_mgr_internal *clk_mgr) > { > - if (clk_mgr->base.bw_params) > - kfree(clk_mgr->base.bw_params); > + kfree(clk_mgr->base.bw_params); > > if (clk_mgr->wm_range_table) > dm_helpers_free_gpu_mem(clk_mgr->base.ctx, DC_MEM_ALLOC_TYPE_GART, > -- > 2.34.1 > > >
Hi,
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
And applied to amd-staging-drm-next.
Thanks Siqueira
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