From 40ed9629935746bb3da1c3017e0f535fa93b610e Mon Sep 17 00:00:00 2001 From: Etienne Carriere Date: Tue, 21 Jan 2020 11:22:32 +0100 Subject: [PATCH] media: platform: stm32: defer probe for auxiliary clock Change stm32-cec driver to defer probe when auxiliary clock "hdmi-cec" is registered in the system not has not been probed yet. Signed-off-by: Etienne Carriere Reviewed-by: Philippe Cornu Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/stm32/stm32-cec.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/stm32/stm32-cec.c b/drivers/media/platform/stm32/stm32-cec.c index 8a86b2cc22fa..86f19af5b917 100644 --- a/drivers/media/platform/stm32/stm32-cec.c +++ b/drivers/media/platform/stm32/stm32-cec.c @@ -302,10 +302,14 @@ static int stm32_cec_probe(struct platform_device *pdev) } cec->clk_hdmi_cec = devm_clk_get(&pdev->dev, "hdmi-cec"); + if (IS_ERR(cec->clk_hdmi_cec) && + PTR_ERR(cec->clk_hdmi_cec) == -EPROBE_DEFER) + return -EPROBE_DEFER; + if (!IS_ERR(cec->clk_hdmi_cec)) { ret = clk_prepare(cec->clk_hdmi_cec); if (ret) { - dev_err(&pdev->dev, "Unable to prepare hdmi-cec clock\n"); + dev_err(&pdev->dev, "Can't prepare hdmi-cec clock\n"); return ret; } } -- 2.30.2