From mboxrd@z Thu Jan 1 00:00:00 1970 From: sean.wang@mediatek.com (Sean Wang) Date: Wed, 18 Jul 2018 11:04:17 +0800 Subject: [resend PATCH v4 5/5] drm: mediatek: Omit warning on probe defers In-Reply-To: <20180717220328.792-6-matthias.bgg@kernel.org> References: <20180717220328.792-1-matthias.bgg@kernel.org> <20180717220328.792-6-matthias.bgg@kernel.org> Message-ID: <1531883057.8953.87.camel@mtkswgap22> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, 2018-07-18 at 00:03 +0200, matthias.bgg at kernel.org wrote: > From: Matthias Brugger > > It can happen that the clock drivers wasn't probed before the > ddp driver gets invoked. The driver used to omit a warning > that the driver failed to get the clocks. Omit this error on > the defered probe path. > so if we list drm device as a child device of mmsys we don't need the patch, and that make more sense. > Signed-off-by: Matthias Brugger > Acked-by: CK Hu > --- > drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c > index bafc5c77c4fb..6b399348a2dc 100644 > --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c > +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c > @@ -374,7 +374,8 @@ static int mtk_ddp_probe(struct platform_device *pdev) > > ddp->clk = devm_clk_get(dev, NULL); > if (IS_ERR(ddp->clk)) { > - dev_err(dev, "Failed to get clock\n"); > + if (PTR_ERR(ddp->clk) != -EPROBE_DEFER) > + dev_err(dev, "Failed to get clock\n"); > return PTR_ERR(ddp->clk); > } >