This is a note to let you know that I've just added the patch titled drm/msm/dsi: Fix missing put_device() call in dsi_get_phy to the 5.16-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-msm-dsi-fix-missing-put_device-call-in-dsi_get_phy.patch and it can be found in the queue-5.16 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From c04c3148ca12227d92f91b355b4538cc333c9922 Mon Sep 17 00:00:00 2001 From: Miaoqian Lin <linmq006@xxxxxxxxx> Date: Thu, 30 Dec 2021 07:09:40 +0000 Subject: drm/msm/dsi: Fix missing put_device() call in dsi_get_phy From: Miaoqian Lin <linmq006@xxxxxxxxx> commit c04c3148ca12227d92f91b355b4538cc333c9922 upstream. If of_find_device_by_node() succeeds, dsi_get_phy() doesn't a corresponding put_device(). Thus add put_device() to fix the exception handling. Fixes: ec31abf ("drm/msm/dsi: Separate PHY to another platform device") Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> Link: https://lore.kernel.org/r/20211230070943.18116-1-linmq006@xxxxxxxxx Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/msm/dsi/dsi.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/msm/dsi/dsi.c +++ b/drivers/gpu/drm/msm/dsi/dsi.c @@ -40,7 +40,12 @@ static int dsi_get_phy(struct msm_dsi *m of_node_put(phy_node); - if (!phy_pdev || !msm_dsi->phy) { + if (!phy_pdev) { + DRM_DEV_ERROR(&pdev->dev, "%s: phy driver is not ready\n", __func__); + return -EPROBE_DEFER; + } + if (!msm_dsi->phy) { + put_device(&phy_pdev->dev); DRM_DEV_ERROR(&pdev->dev, "%s: phy driver is not ready\n", __func__); return -EPROBE_DEFER; } Patches currently in stable-queue which might be from linmq006@xxxxxxxxx are queue-5.16/drm-msm-dsi-fix-missing-put_device-call-in-dsi_get_phy.patch