linux-kernel - Re: [RFC PATCH v2 3/3] drm: initialize accel framework

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <b6faacac-46f2-7643-7796-b34840fc94f5@quicinc.com>
Date:   Wed, 2 Nov 2022 15:30:27 -0600
From:   Jeffrey Hugo <quic_jhugo@...cinc.com>
To:     Oded Gabbay <ogabbay@...nel.org>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>, Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <linux-kernel@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        Jason Gunthorpe <jgg@...dia.com>,
        John Hubbard <jhubbard@...dia.com>,
        Alex Deucher <alexander.deucher@....com>
CC:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Yuji Ishikawa <yuji2.ishikawa@...hiba.co.jp>,
        Jiho Chu <jiho.chu@...sung.com>,
        Daniel Stone <daniel@...ishbar.org>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        Christoph Hellwig <hch@...radead.org>,
        Kevin Hilman <khilman@...libre.com>,
        Jagan Teki <jagan@...rulasolutions.com>,
        Jacek Lawrynowicz <jacek.lawrynowicz@...ux.intel.com>,
        Maciej Kwapulinski <maciej.kwapulinski@...ux.intel.com>
Subject: Re: [RFC PATCH v2 3/3] drm: initialize accel framework

On 11/2/2022 2:34 PM, Oded Gabbay wrote:
> @@ -163,7 +174,11 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type)
>   
>   	ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root);
>   	if (ret) {
> -		DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
> +		if (minor->type == DRM_MINOR_ACCEL)
> +			DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/accel.\n");
> +		else
> +			DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
> +
>   		goto err_debugfs;
>   	}
>   

This doesn't look right.  Don't you need to call drm_debugfs_init() with 
accel_debugfs_root for the case - minor->type == DRM_MINOR_ACCEL? 
Unless I fail to understand something, this will put all the accel 
devices under /sys/kernel/debug/dri