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Date: Mon, 15 Aug 2022 20:06:56 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Miaoqian Lin <linmq006@...il.com>, Martin Blumenstingl <martin.blumenstingl@...glemail.com>, Neil Armstrong <narmstrong@...libre.com> Subject: [PATCH 5.15 772/779] drm/meson: Fix refcount leak in meson_encoder_hdmi_init From: Miaoqian Lin <linmq006@...il.com> commit 7381076809586528e2a812a709e2758916318a99 upstream. of_find_device_by_node() takes reference, we should use put_device() to release it when not need anymore. Add missing put_device() in error path to avoid refcount leak. Fixes: 0af5e0b41110 ("drm/meson: encoder_hdmi: switch to bridge DRM_BRIDGE_ATTACH_NO_CONNECTOR") Signed-off-by: Miaoqian Lin <linmq006@...il.com> Reviewed-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com> Reviewed-by: Neil Armstrong <narmstrong@...libre.com> Signed-off-by: Neil Armstrong <narmstrong@...libre.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220511054052.51981-1-linmq006@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/gpu/drm/meson/meson_encoder_hdmi.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/meson/meson_encoder_hdmi.c +++ b/drivers/gpu/drm/meson/meson_encoder_hdmi.c @@ -438,8 +438,10 @@ int meson_encoder_hdmi_init(struct meson cec_fill_conn_info_from_drm(&conn_info, meson_encoder_hdmi->connector); notifier = cec_notifier_conn_register(&pdev->dev, NULL, &conn_info); - if (!notifier) + if (!notifier) { + put_device(&pdev->dev); return -ENOMEM; + } meson_encoder_hdmi->cec_notifier = notifier; }
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