5.4-stable review patch. If anyone has any objections, please let me know.
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From: Joe Hattori joe@pf.is.s.u-tokyo.ac.jp
[ Upstream commit 094f5c315f756b19198e6c401aa821ac0e868750 ]
imx_media_add_of_subdevs() calls of_parse_phandle() and passes the obtained node to imx_media_of_add_csi(). The passed node is used in v4l2_async_nf_add_fwnode(), which increments the refcount of the node. Therefore, while the current implementation only releases the node when imx_media_of_add_csi() fails, but should always release it. Call of_node_put() right after imx_media_of_add_csi().
Fixes: dee747f88167 ("media: imx: Don't register IPU subdevs/links if CSI port missing") Signed-off-by: Joe Hattori joe@pf.is.s.u-tokyo.ac.jp Reviewed-by: Vladimir Zapolskiy vladimir.zapolskiy@linaro.org Reviewed-by: Philipp Zabel p.zabel@pengutronix.de Signed-off-by: Hans Verkuil hverkuil@xs4all.nl Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/staging/media/imx/imx-media-of.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/media/imx/imx-media-of.c b/drivers/staging/media/imx/imx-media-of.c index 2d3efd2a6dde0..d9b34605ff9bc 100644 --- a/drivers/staging/media/imx/imx-media-of.c +++ b/drivers/staging/media/imx/imx-media-of.c @@ -55,23 +55,19 @@ int imx_media_add_of_subdevs(struct imx_media_dev *imxmd, break;
ret = imx_media_of_add_csi(imxmd, csi_np); + of_node_put(csi_np); if (ret) { /* unavailable or already added is not an error */ if (ret == -ENODEV || ret == -EEXIST) { - of_node_put(csi_np); continue; }
/* other error, can't continue */ - goto err_out; + return ret; } }
return 0; - -err_out: - of_node_put(csi_np); - return ret; } EXPORT_SYMBOL_GPL(imx_media_add_of_subdevs);