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X-CSE-ConnectionGUID: lBMLYARPRLWZT5KwbkWfUg== X-CSE-MsgGUID: Zd4zm9GtRyqHqZSqH3f2CQ== X-IronPort-AV: E=Sophos;i="6.12,297,1728943200"; d="scan'208";a="40915819" Received: from vmailcow01.tq-net.de ([10.150.86.48]) by mx1.tq-group.com with ESMTP; 08 Jan 2025 10:36:34 +0100 X-CheckPoint: {677E4722-2-3C670366-E45AD810} X-MAIL-CPID: A643DC748E8B87B427C9C77EF9A89612_4 X-Control-Analysis: str=0001.0A682F20.677E4722.00EF,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 37A1B165CAE; Wed, 8 Jan 2025 10:36:25 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ew.tq-group.com; s=dkim; t=1736328989; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ByQ6/5pKHP8MQj/YBuiBtBApZpE+BRhKSooauRrD8M0=; b=U+KzuCHEcTYSgV86jGNGaa/mv07FsZ9PohRUU45OuleOyyJbt4plTlOs9OC5h7EZa6pfs3 xlVysXyvSKiMOCJ4e9ke95vO13cPqh1HfgX8vWkZ2jAN2EB0MoIxNTAf4wbKa6PejaL/EW jar7uQZDyqpbdVuuUaEDl6oJFRZzUGbz27SSfYKXF1+RuuRrslFncfWHLEIPOW6btF7WcO XVACAELq3PbfNTlzg7AzZcgnLm7d1xi7Kdf+ERCCssq4TaNZvPf0DdIRe288BQfroOV9ZF uQB8SZfm+4qUhh1bs+Y2Sw358tBuiNhsWy+yyN8ZLOay3berwGebv/Qlx8V9RA== From: Alexander Stein To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Liu Ying Cc: dri-devel@lists.freedesktop.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/4] drm/bridge: imx8qxp-pxl2dpi: Use dev_err_probe Date: Wed, 08 Jan 2025 10:36:24 +0100 Message-ID: <1842588.VLH7GnMWUR@steina-w> Organization: TQ-Systems GmbH In-Reply-To: References: <20250107143900.988567-1-alexander.stein@ew.tq-group.com> <20250107143900.988567-2-alexander.stein@ew.tq-group.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="iso-8859-1" X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250108_013640_908851_E8F974F4 X-CRM114-Status: GOOD ( 17.26 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, Am Mittwoch, 8. Januar 2025, 04:22:19 CET schrieb Liu Ying: > On 01/07/2025, Alexander Stein wrote: > > This simplifies the code and gives additional information upon deferral. > >=20 > > Signed-off-by: Alexander Stein > > --- > > drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c | 26 ++++++-------------- > > 1 file changed, 7 insertions(+), 19 deletions(-) > >=20 > > diff --git a/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c b/drivers/gpu= /drm/bridge/imx/imx8qxp-pxl2dpi.c > > index 65cf3a6c8ec69..038eaff889bb7 100644 > > --- a/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c > > +++ b/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c > > @@ -398,20 +398,12 @@ static int imx8qxp_pxl2dpi_bridge_probe(struct pl= atform_device *pdev) > > return -ENOMEM; > > =20 > > p2d->regmap =3D syscon_node_to_regmap(np->parent); > > - if (IS_ERR(p2d->regmap)) { > > - ret =3D PTR_ERR(p2d->regmap); > > - if (ret !=3D -EPROBE_DEFER) > > - DRM_DEV_ERROR(dev, "failed to get regmap: %d\n", ret); > > - return ret; > > - } > > + if (IS_ERR(p2d->regmap)) > > + return dev_err_probe(dev, ret, "failed to get regmap\n"); >=20 > s/ret/PTR_ERR(p2d->regmap)/ Thanks for the catch. > > =20 > > ret =3D imx_scu_get_handle(&p2d->ipc_handle); > > - if (ret) { > > - if (ret !=3D -EPROBE_DEFER) > > - DRM_DEV_ERROR(dev, "failed to get SCU ipc handle: %d\n", > > - ret); > > - return ret; > > - } > > + if (ret) > > + return dev_err_probe(dev, ret, "failed to get SCU ipc handle\n"); > > =20 > > p2d->dev =3D dev; > > =20 > > @@ -422,13 +414,9 @@ static int imx8qxp_pxl2dpi_bridge_probe(struct pla= tform_device *pdev) > > } > > =20 > > p2d->next_bridge =3D imx8qxp_pxl2dpi_find_next_bridge(p2d); > > - if (IS_ERR(p2d->next_bridge)) { > > - ret =3D PTR_ERR(p2d->next_bridge); > > - if (ret !=3D -EPROBE_DEFER) > > - DRM_DEV_ERROR(dev, "failed to find next bridge: %d\n", > > - ret); > > - return ret; > > - } > > + if (IS_ERR(p2d->next_bridge)) > > + return dev_err_probe(dev, PTR_ERR(p2d->next_bridge), > > + "failed to find next bridge\n"); > > =20 > > ret =3D imx8qxp_pxl2dpi_set_pixel_link_sel(p2d); > > if (ret) >=20 > imx8qxp_pxl2dpi_parse_dt_companion() may return -EPROBE_DEFER too, so it = needs > to be changed. True, I added a dev_err_probe to that function when companion bridge cannot be found. Best regards, Alexander =2D-=20 TQ-Systems GmbH | M=FChlstra=DFe 2, Gut Delling | 82229 Seefeld, Germany Amtsgericht M=FCnchen, HRB 105018 Gesch=E4ftsf=FChrer: Detlef Schneider, R=FCdiger Stahl, Stefan Schneider http://www.tq-group.com/