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drm/omap: dss: Fix refcount leak bugs

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[ Upstream commit 8b42057e62 ]

In dss_init_ports() and __dss_uninit_ports(), we should call
of_node_put() for the reference returned by of_graph_get_port_by_id()
in fail path or when it is not used anymore.

Fixes: 09bffa6e51 ("drm: omap: use common OF graph helpers")
Signed-off-by: Liang He <windhl@126.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220722144348.1306569-1-windhl@126.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Liang He
2022-07-22 22:43:48 +08:00
committed by Greg Kroah-Hartman
parent cbe37857dd
commit 1f340e1c1c
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/omapdrm/dss/dss.c
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@@ -1173,6 +1173,7 @@ static void __dss_uninit_ports(struct dss_device *dss, unsigned int num_ports)
default:
break;
}
of_node_put(port);
}
}
@@ -1205,11 +1206,13 @@ static int dss_init_ports(struct dss_device *dss)
default:
break;
}
of_node_put(port);
}
return 0;
error:
of_node_put(port);
__dss_uninit_ports(dss, i);
return r;
}