Messages in this thread | | | Subject | Re: [PATCH 02/12] drm/tegra: rgb: add missing of_node_put after of_device_is_available | From | Mukesh Ojha <> | Date | Mon, 1 Apr 2019 18:19:12 +0530 |
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On 2/23/2019 6:50 PM, Julia Lawall wrote: > Add an of_node_put when a tested device node is not available. > > The semantic patch that fixes this problem is as follows > (http://coccinelle.lip6.fr): > > // <smpl> > @@ > identifier f; > local idexpression e; > expression x; > @@ > > e = f(...); > ... when != of_node_put(e) > when != x = e > when != e = x > when any > if (<+...of_device_is_available(e)...+>) { > ... when != of_node_put(e) > ( > return e; > | > + of_node_put(e); > return ...; > ) > } > // </smpl> > > Fixes: d8f4a9eda0067 ("drm: Add NVIDIA Tegra20 support") > Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Cheers, -Mukesh > > --- > drivers/gpu/drm/tegra/rgb.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff -u -p a/drivers/gpu/drm/tegra/rgb.c b/drivers/gpu/drm/tegra/rgb.c > --- a/drivers/gpu/drm/tegra/rgb.c > +++ b/drivers/gpu/drm/tegra/rgb.c > @@ -221,8 +221,10 @@ int tegra_dc_rgb_probe(struct tegra_dc * > int err; > > np = of_get_child_by_name(dc->dev->of_node, "rgb"); > - if (!np || !of_device_is_available(np)) > + if (!np || !of_device_is_available(np)) { > + of_node_put(np); > return -ENODEV; > + } > > rgb = devm_kzalloc(dc->dev, sizeof(*rgb), GFP_KERNEL); > if (!rgb) >
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