Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752543Ab2BVOUv (ORCPT ); Wed, 22 Feb 2012 09:20:51 -0500 Received: from opensource.wolfsonmicro.com ([80.75.67.52]:38952 "EHLO opensource.wolfsonmicro.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751615Ab2BVOUr (ORCPT ); Wed, 22 Feb 2012 09:20:47 -0500 From: Dimitris Papastamos To: Mark Brown Cc: linux-kernel@vger.kernel.org Subject: [PATCH] regmap: Expose the driver name in debugfs Date: Wed, 22 Feb 2012 14:20:09 +0000 Message-Id: <1329920409-30426-1-git-send-email-dp@opensource.wolfsonmicro.com> X-Mailer: git-send-email 1.7.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1878 Lines: 66 The `name' file should contain the name of the device driver. Signed-off-by: Dimitris Papastamos --- drivers/base/regmap/regmap-debugfs.c | 32 ++++++++++++++++++++++++++++++++ 1 files changed, 32 insertions(+), 0 deletions(-) diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c index b3b4b8f..a5a96a5 100644 --- a/drivers/base/regmap/regmap-debugfs.c +++ b/drivers/base/regmap/regmap-debugfs.c @@ -33,6 +33,35 @@ static int regmap_open_file(struct inode *inode, struct file *file) return 0; } +static ssize_t regmap_name_read_file(struct file *file, + char __user *user_buf, size_t count, + loff_t *ppos) +{ + struct regmap *map = file->private_data; + int ret; + char *buf; + + buf = kmalloc(PAGE_SIZE, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + ret = snprintf(buf, PAGE_SIZE, "%s\n", map->dev->driver->name); + if (ret < 0) { + kfree(buf); + return ret; + } + + ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); + kfree(buf); + return ret; +} + +static const struct file_operations regmap_name_fops = { + .open = regmap_open_file, + .read = regmap_name_read_file, + .llseek = default_llseek, +}; + static ssize_t regmap_map_read_file(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { @@ -186,6 +215,9 @@ void regmap_debugfs_init(struct regmap *map) return; } + debugfs_create_file("name", 0400, map->debugfs, + map, ®map_name_fops); + if (map->max_register) { debugfs_create_file("registers", 0400, map->debugfs, map, ®map_map_fops); -- 1.7.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/