From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (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 8DA8D2144D1 for ; Wed, 30 Oct 2024 15:16:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730301368; cv=none; b=gUHQpTMDRRl1DTFo2/l2NTFWFmIQWvT18pWNdf8kNhc7pk2UuNzcf7UIBOsdjahYwUPZQXgbekx1keqlclVfw5JEy137UaVW+LH8Zzvjpd0/JlixuOe/FmDGMFZJlxH+jGR7Mpl7++T8t6/rYKXWpsB9iDDIHNoID5tqXdI3lJs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730301368; c=relaxed/simple; bh=7XcxJbm5D06UQvHD13AF8g7v8ihVLD5KCzQURgAp7kU=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=AkoIAVGY4Mqnw8/OUdLkIiooB30w94Fz6Yq+TAb/Qus3g0Kt0KPwfW2iuow7wu61cUm8+e4ozgXOi2EpcYiB/9udlIWKNNDFZy7Hkfi18t2pqSM/Hc3JY2xoeOZjov32FiYLCR/9iOQnHrstsdw9rzwothOLWQxgeqRV2BBNtxY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=ERJhU7iR; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="ERJhU7iR" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1730301363; bh=7XcxJbm5D06UQvHD13AF8g7v8ihVLD5KCzQURgAp7kU=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=ERJhU7iRdQt3Ta6xEIfOl56LPJ98BnvTE/P4yiw/i53Fgv+Jk1aqeMImi99ynfxlS rMzXMzZrA7rnNxdphfDyXmFJyPwonUPC4E0FehRzhpwKefqpq7TEt29BcnU0RiR2NI liqImFb3bGtyCAv2G3YRb5z5CegdyrBAhZCjbqp4m3DSc7mOCNr7fcu09JdI6JVrZe HFMWw3HoNo9/gsEXNhqPTeFtFLoQnci9sT1JtAb+BnDTJFND3KLvjeq4TXZ9a90s+W gLyeyT4SGSbg+yRxUoYqRJS8Q7rl7ewIO5SzjM2kKRHP/+9XYyZDEU3j1FsL4j9vay xFCCmNHpQnYlQ== Received: from localhost (unknown [IPv6:2a01:e0a:2c:6930:5cf4:84a1:2763:fe0d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: bbrezillon) by bali.collaboradmins.com (Postfix) with ESMTPSA id 0BCE517E3636; Wed, 30 Oct 2024 16:16:03 +0100 (CET) Date: Wed, 30 Oct 2024 16:15:59 +0100 From: Boris Brezillon To: =?UTF-8?B?QWRyacOhbg==?= Larumbe Cc: Rob Herring , Steven Price , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , AngeloGioacchino Del Regno , Liviu Dudau , =?UTF-8?B?Q2zDqW1lbnQgUMOpcm9u?= , Heiko Stuebner , Grant Likely , kernel@collabora.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 2/2] drm/panthor: Fix OPP refcnt leaks in devfreq initialisation Message-ID: <20241030161559.7edff79d@collabora.com> In-Reply-To: <20241030161358.3b78b423@collabora.com> References: <20241003133037.3398144-1-adrian.larumbe@collabora.com> <20241003133037.3398144-2-adrian.larumbe@collabora.com> <20241030161358.3b78b423@collabora.com> Organization: Collabora X-Mailer: Claws Mail 4.3.0 (GTK 3.24.43; x86_64-redhat-linux-gnu) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On Wed, 30 Oct 2024 16:13:58 +0100 Boris Brezillon wrote: > On Thu, 3 Oct 2024 14:30:29 +0100 > Adri=C3=A1n Larumbe wrote: >=20 > > Make sure in case of errors between the first fetch of an OPP in > > panthor_devfreq_init and its successive put, the error path decrements = its > > reference count to avoid OPP object leaks when removing the device. > >=20 > > Signed-off-by: Adri=C3=A1n Larumbe > > Fixes: fac9b22df4b1 ("drm/panthor: Add the devfreq logical block") =20 >=20 > It doesn't apply on top of drm-misc-fixes. Could you send a v3 based > on drm-misc-fixes please? Sorry, I meant v4. v3 exists, but doesn't apply correctly on drm-misc-fixes. >=20 > > --- > > drivers/gpu/drm/panthor/panthor_devfreq.c | 8 ++++++-- > > 1 file changed, 6 insertions(+), 2 deletions(-) > >=20 > > diff --git a/drivers/gpu/drm/panthor/panthor_devfreq.c b/drivers/gpu/dr= m/panthor/panthor_devfreq.c > > index 9d0f891b9b53..ce0ac4563f65 100644 > > --- a/drivers/gpu/drm/panthor/panthor_devfreq.c > > +++ b/drivers/gpu/drm/panthor/panthor_devfreq.c > > @@ -197,7 +197,7 @@ int panthor_devfreq_init(struct panthor_device *ptd= ev) > > if (ret && ret !=3D -ENODEV) { > > if (ret !=3D -EPROBE_DEFER) > > DRM_DEV_ERROR(dev, "Couldn't retrieve/enable sram supply\n"); > > - return ret; > > + goto opp_err; > > } > > =20 > > /* > > @@ -207,7 +207,7 @@ int panthor_devfreq_init(struct panthor_device *ptd= ev) > > ret =3D dev_pm_opp_set_opp(dev, opp); > > if (ret) { > > DRM_DEV_ERROR(dev, "Couldn't set recommended OPP\n"); > > - return ret; > > + goto opp_err; > > } > > =20 > > dev_pm_opp_put(opp); > > @@ -242,6 +242,10 @@ int panthor_devfreq_init(struct panthor_device *pt= dev) > > DRM_DEV_INFO(dev, "Failed to register cooling device\n"); > > =20 > > return 0; > > + > > +opp_err: > > + dev_pm_opp_put(opp); > > + return ret; > > } > > =20 > > int panthor_devfreq_resume(struct panthor_device *ptdev) =20 >=20