From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from gloria.sntech.de (gloria.sntech.de [185.11.138.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0F89412B93 for ; Tue, 27 May 2025 20:07:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.11.138.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748376432; cv=none; b=TCmAZeN2AiLZsaSFd+WV//k2hMMItNOIm1ZlsNOHJRYumGhLbXyf3n9XvNwfqpBUDK//7CXemhPbFeqSeWHO08AH5McS4zoKe2C1+QoCdlXngc8KN358sBGESJ9xqqeKQ1rTXcdgrvuIpX0kdrtv/Oy/g2cCh1B3ndTX8StituM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748376432; c=relaxed/simple; bh=HypRyVAe+IxBBhzEDmorHQxVP/UuenaP7IKPwGtajeU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=IG8b+mTohMFfKzrseZT982gXWvkBiVZFIxp1iI5cpJjU0KpND7DGT/MHWLFucrgicCkMRS3kVToALkScWY+7e+AER0BsgXTUJ1V4IU6swC8B98I6z2R9MPyUwW9IkLUSXXIxiD1XLOmmK+shECkFYAu42cuNzqF19c/hfDdLaOM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sntech.de; spf=pass smtp.mailfrom=sntech.de; dkim=pass (2048-bit key) header.d=sntech.de header.i=@sntech.de header.b=CpJ4SqlJ; arc=none smtp.client-ip=185.11.138.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sntech.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sntech.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sntech.de header.i=@sntech.de header.b="CpJ4SqlJ" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sntech.de; s=gloria202408; h=Content-Type:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID; bh=29dI0rmyHnCBcd3TYNMYesrnxgni1Wz/NJQyPEzq/iw=; b=CpJ4SqlJ5oklhQXXaLW7+9uJGA 2npp3DtVuuGmoPkWeLdD/4CJvuxDNK01U7fYKoQzDcMnGIRVKc0fUthWznZhLVQACzSJiQ5l/Faej 5uRfJYDiD2LnKzAeSyDkvcZLP2+2WLNhAnblfj5afInS8vwwroKYo6un1aVu9LwsPN7daz5TeyRYp i1zInwGc3INnYxDfvaRuEo5lTl6vHt+E5E0VmiPCS1L0N9yc7eJFEA36AW4MQX14Z7GE35VAqQsjI 9vpmTYc/l1wxOFrzGT1f4z8Av+ZUHO6Q5bdBmPk0VrhWnY3drCO3fXBSNCKbQIj3WmI7JuBlNX0w0 YlRoktnA==; Received: from i53875bdb.versanet.de ([83.135.91.219] helo=diego.localnet) by gloria.sntech.de with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1uK0ZG-0000aG-6O; Tue, 27 May 2025 22:06:34 +0200 From: Heiko =?UTF-8?B?U3TDvGJuZXI=?= To: dianders@chromium.org, andrzej.hajda@intel.com, neil.armstrong@linaro.org, rfoss@kernel.org, dri-devel@lists.freedesktop.org, andy.yan@rock-chips.com Cc: Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@gmail.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, l.stach@pengutronix.de, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Damon Ding , Damon Ding , Dmitry Baryshkov Subject: [RESEND] Re: [PATCH v8] drm/bridge: analogix_dp: Remove the unnecessary calls to clk_disable_unprepare() during probing Date: Tue, 27 May 2025 22:06:33 +0200 Message-ID: <22709005.EfDdHjke4D@diego> In-Reply-To: <20250302083043.3197235-1-damon.ding@rock-chips.com> References: <20250302083043.3197235-1-damon.ding@rock-chips.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" [resending to update to Dmitry's new address] Am Sonntag, 2. M=C3=A4rz 2025, 09:30:43 Mitteleurop=C3=A4ische Sommerzeit s= chrieb Damon Ding: > With the commit f37952339cc2 ("drm/bridge: analogix_dp: handle clock via > runtime PM"), the PM operations can help enable/disable the clock. The > err_disable_clk label and clk_disable_unprepare() operations are no > longer necessary because the analogix_dp_resume() will not be called > during probing. >=20 > Fixes: f37952339cc2 ("drm/bridge: analogix_dp: handle clock via runtime P= M") > Suggested-by: Douglas Anderson > Reviewed-by: Douglas Anderson > Signed-off-by: Damon Ding Reviewed-by: Heiko Stuebner This patch seems to have fallen through the cracks? dp->clock never gets enabled in analogix_dp_probe(), so reaching that error handling code would create a enable-disable mismatch for the dp>clock. > --- >=20 > Picked from: > https://patchwork.kernel.org/project/linux-rockchip/list/?series=3D936932 >=20 > Changes in v8: > - Fix the conflict because of commit 43c00fb1a518 ("drm/bridge: > analogix_dp: Use devm_platform_ioremap_resource()") > --- > .../gpu/drm/bridge/analogix/analogix_dp_core.c | 18 +++++------------- > 1 file changed, 5 insertions(+), 13 deletions(-) >=20 > diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers= /gpu/drm/bridge/analogix/analogix_dp_core.c > index f6e4bdc05ba0..817070613b03 100644 > --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c > +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c > @@ -1605,10 +1605,8 @@ analogix_dp_probe(struct device *dev, struct analo= gix_dp_plat_data *plat_data) > } > =20 > dp->reg_base =3D devm_platform_ioremap_resource(pdev, 0); > - if (IS_ERR(dp->reg_base)) { > - ret =3D PTR_ERR(dp->reg_base); > - goto err_disable_clk; > - } > + if (IS_ERR(dp->reg_base)) > + return ERR_CAST(dp->reg_base); > =20 > dp->force_hpd =3D of_property_read_bool(dev->of_node, "force-hpd"); > =20 > @@ -1620,8 +1618,7 @@ analogix_dp_probe(struct device *dev, struct analog= ix_dp_plat_data *plat_data) > if (IS_ERR(dp->hpd_gpiod)) { > dev_err(dev, "error getting HDP GPIO: %ld\n", > PTR_ERR(dp->hpd_gpiod)); > - ret =3D PTR_ERR(dp->hpd_gpiod); > - goto err_disable_clk; > + return ERR_CAST(dp->hpd_gpiod); > } > =20 > if (dp->hpd_gpiod) { > @@ -1641,8 +1638,7 @@ analogix_dp_probe(struct device *dev, struct analog= ix_dp_plat_data *plat_data) > =20 > if (dp->irq =3D=3D -ENXIO) { > dev_err(&pdev->dev, "failed to get irq\n"); > - ret =3D -ENODEV; > - goto err_disable_clk; > + return ERR_PTR(-ENODEV); > } > =20 > ret =3D devm_request_threaded_irq(&pdev->dev, dp->irq, > @@ -1651,15 +1647,11 @@ analogix_dp_probe(struct device *dev, struct anal= ogix_dp_plat_data *plat_data) > irq_flags, "analogix-dp", dp); > if (ret) { > dev_err(&pdev->dev, "failed to request irq\n"); > - goto err_disable_clk; > + return ERR_PTR(ret); > } > disable_irq(dp->irq); > =20 > return dp; > - > -err_disable_clk: > - clk_disable_unprepare(dp->clock); > - return ERR_PTR(ret); > } > EXPORT_SYMBOL_GPL(analogix_dp_probe); > =20 >=20