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 3FEA62185A3 for ; Wed, 30 Oct 2024 15:14:07 +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=1730301249; cv=none; b=jQvf+UxMp7vhlbfJ4YZ+2dD1FPlJZsOEeBI1+OZhuozvPaeuzAKqmpiiO2dvo9J04sU54XwljF/P8nCpWkWQ4fdkHNuHL1Wc/gbwyoa8aw9awgPcbKZNH124FKIohjQOeL1ns+1Bo+gLxVNUngffgY168DH4qrRGmwPOzVATKxw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730301249; c=relaxed/simple; bh=XDyPHnPK/41K24Mu77jy/av5KyboXA4GUK7JOhfY4QA=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=GODyQ71ypoovkZvxo96GSj83iF4xFOfE3yQ6KgHlTWTbslQ7u3TUoXgdoHotKd78RFEnHd/xjR2ov3Hx2KOLAHL6bX79ryihpuuvF7S5qkF55XbnDduzE3RjqhGP26A5x8nwZCLpOfip7XInIr9RYgiYAC8EFyMyLibt5vMX1yc= 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=dc+6jQKl; 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="dc+6jQKl" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1730301245; bh=XDyPHnPK/41K24Mu77jy/av5KyboXA4GUK7JOhfY4QA=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=dc+6jQKl4pbMnIJ0Is6cu76vG33iBRCDCKosNKfr2HEWKUCu1i3sT+BnrA+isyFqt Kam+YwAYb6YFC9Wv8Csb1Ju3uhpUy2zJZdM0Y4LrNmS5DZ0JB7Ln89fe7Y5CHGLtfQ wDrAvxAJVkaeTIMZLB4r/iYWC+lt6uMt0uCPBypavyqy8xDWDWcVS5nH0ijVvFWt6b LwUnSroqJ0dWB7fYedbVyLO0X+cNC8mIXB1KxGyARJav0MOgL/i6TvanZ+zGbwCYpB hyVaAEwLXYcViQludKYRuFA4vAltAkhjFvlUN+ougwWseXl2ga5xhbSCoWc6vYAB+V zC/yBPjIzYcZQ== 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 7BB7A17E3636; Wed, 30 Oct 2024 16:14:04 +0100 (CET) Date: Wed, 30 Oct 2024 16:13:58 +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: <20241030161358.3b78b423@collabora.com> In-Reply-To: <20241003133037.3398144-2-adrian.larumbe@collabora.com> References: <20241003133037.3398144-1-adrian.larumbe@collabora.com> <20241003133037.3398144-2-adrian.larumbe@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 Thu, 3 Oct 2024 14:30:29 +0100 Adri=C3=A1n Larumbe wrote: > 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") It doesn't apply on top of drm-misc-fixes. Could you send a v3 based on drm-misc-fixes please? > --- > 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/drm/= 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 *ptdev) > 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 *ptdev) > 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 *ptde= v) > 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)