From patchwork Tue Apr 16 18:27:00 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Howells X-Patchwork-Id: 2450881 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork2.kernel.org (Postfix) with ESMTP id F0BD1DF230 for ; Tue, 16 Apr 2013 19:18:44 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D0B3FE64F9 for ; Tue, 16 Apr 2013 12:18:44 -0700 (PDT) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by gabe.freedesktop.org (Postfix) with ESMTP id 1CAD3E64E8 for ; Tue, 16 Apr 2013 11:27:03 -0700 (PDT) Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r3GIR2rR024784 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 16 Apr 2013 14:27:02 -0400 Received: from warthog.procyon.org.uk (ovpn-113-46.phx2.redhat.com [10.3.113.46]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id r3GIR127007722; Tue, 16 Apr 2013 14:27:01 -0400 Organization: Red Hat UK Ltd. 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Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH 18/28] drm: proc: Use minor->index to label things, not PDE->name [RFC] To: linux-kernel@vger.kernel.org From: David Howells Date: Tue, 16 Apr 2013 19:27:00 +0100 Message-ID: <20130416182700.27773.8970.stgit@warthog.procyon.org.uk> In-Reply-To: <20130416182550.27773.89310.stgit@warthog.procyon.org.uk> References: <20130416182550.27773.89310.stgit@warthog.procyon.org.uk> User-Agent: StGit/0.16 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.67 on 10.5.11.11 X-Mailman-Approved-At: Tue, 16 Apr 2013 12:15:27 -0700 Cc: linux-fsdevel@vger.kernel.org, viro@zeniv.linux.org.uk, dri-devel@lists.freedesktop.org X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org Errors-To: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org Use minor->index to label things, not the name field from the proc_dir_entry of the /proc/dwm// directory. Also, use "%u" not "%d" to render the value and use a 12-byte buffer in which to render the integer, not a 16-byte buffer. The longest string an unsigned int can give you is 10 chars (4294967295) plus a NUL, so round up to 12 as the stack is likely to be 4- or 8-byte aligned. Signed-off-by: David Howells cc: dri-devel@lists.freedesktop.org --- drivers/gpu/drm/drm_proc.c | 13 +++++-------- drivers/gpu/drm/drm_stub.c | 2 +- include/drm/drmP.h | 3 +-- 3 files changed, 7 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/drm_proc.c b/drivers/gpu/drm/drm_proc.c index aead653..0646a46 100644 --- a/drivers/gpu/drm/drm_proc.c +++ b/drivers/gpu/drm/drm_proc.c @@ -116,14 +116,13 @@ static int drm_proc_create_files(const struct drm_info_list *files, int count, ent = proc_create_data(files[i].name, S_IRUGO, root, &drm_proc_fops, tmp); if (!ent) { - DRM_ERROR("Cannot create /proc/dri/%s/%s\n", - root->name, files[i].name); + DRM_ERROR("Cannot create /proc/dri/%u/%s\n", + minor->index, files[i].name); list_del(&tmp->list); kfree(tmp); ret = -1; goto fail; } - } return 0; @@ -137,7 +136,6 @@ fail: * Initialize the DRI proc filesystem for a device * * \param dev DRM device - * \param minor device minor number * \param root DRI proc dir entry. * \param dev_root resulting DRI device proc dir entry. * \return root entry pointer on success, or NULL on failure. @@ -146,14 +144,13 @@ fail: * "/proc/dri/%minor%/", and each entry in proc_list as * "/proc/dri/%minor%/%name%". */ -int drm_proc_init(struct drm_minor *minor, int minor_id, - struct proc_dir_entry *root) +int drm_proc_init(struct drm_minor *minor, struct proc_dir_entry *root) { - char name[64]; + char name[12]; int ret; INIT_LIST_HEAD(&minor->proc_nodes.list); - sprintf(name, "%d", minor_id); + sprintf(name, "%u", minor->index); minor->proc_root = proc_mkdir(name, root); if (!minor->proc_root) { DRM_ERROR("Cannot create /proc/dri/%s\n", name); diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c index 7d30802..16f3ec5 100644 --- a/drivers/gpu/drm/drm_stub.c +++ b/drivers/gpu/drm/drm_stub.c @@ -352,7 +352,7 @@ int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type) idr_replace(&drm_minors_idr, new_minor, minor_id); if (type == DRM_MINOR_LEGACY) { - ret = drm_proc_init(new_minor, minor_id, drm_proc_root); + ret = drm_proc_init(new_minor, drm_proc_root); if (ret) { DRM_ERROR("DRM: Failed to initialize /proc/dri.\n"); goto err_mem; diff --git a/include/drm/drmP.h b/include/drm/drmP.h index af53320..60c33f1 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -1546,8 +1546,7 @@ extern struct idr drm_minors_idr; extern struct drm_local_map *drm_getsarea(struct drm_device *dev); /* Proc support (drm_proc.h) */ -extern int drm_proc_init(struct drm_minor *minor, int minor_id, - struct proc_dir_entry *root); +extern int drm_proc_init(struct drm_minor *minor, struct proc_dir_entry *root); extern int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root); /* Debugfs support */