From: Jernej Skrabec jernej.skrabec@gmail.com
[ Upstream commit 37af43b250fda6162005d47bf7c959c70d52b107 ]
If clocks for some reason couldn't be enabled, probe function returns immediately, without disabling PM. This obviously leaves PM ref counters unbalanced.
Fix that by jumping to appropriate error path, so effects of PM functions are reversed.
Fixes: 775fec69008d ("media: add Rockchip VPU JPEG encoder driver") Signed-off-by: Jernej Skrabec jernej.skrabec@gmail.com Acked-by: Andrzej Pietrasiewicz andrzej.p@collabora.com Reviewed-by: Ezequiel Garcia ezequiel@vanguardiasur.com.ar Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/staging/media/hantro/hantro_drv.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/media/hantro/hantro_drv.c b/drivers/staging/media/hantro/hantro_drv.c index 7749ca9a8ebbf..bc97ec0a7e4af 100644 --- a/drivers/staging/media/hantro/hantro_drv.c +++ b/drivers/staging/media/hantro/hantro_drv.c @@ -829,7 +829,7 @@ static int hantro_probe(struct platform_device *pdev) ret = clk_bulk_prepare(vpu->variant->num_clocks, vpu->clocks); if (ret) { dev_err(&pdev->dev, "Failed to prepare clocks\n"); - return ret; + goto err_pm_disable; }
ret = v4l2_device_register(&pdev->dev, &vpu->v4l2_dev); @@ -885,6 +885,7 @@ err_v4l2_unreg: v4l2_device_unregister(&vpu->v4l2_dev); err_clk_unprepare: clk_bulk_unprepare(vpu->variant->num_clocks, vpu->clocks); +err_pm_disable: pm_runtime_dont_use_autosuspend(vpu->dev); pm_runtime_disable(vpu->dev); return ret;