ad2106ca00
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Kalle Valo <kvalo@codeaurora.org> Cc: Tony Lindgren <tony@atomide.com> Cc: linux-wireless@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
116 lines
3.5 KiB
C
116 lines
3.5 KiB
C
/*
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* This file is part of wl1271
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*
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* Copyright (C) 2009 Nokia Corporation
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*
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* Contact: Luciano Coelho <luciano.coelho@nokia.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#ifndef __DEBUGFS_H__
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#define __DEBUGFS_H__
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#include "wlcore.h"
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__printf(4, 5) int wl1271_format_buffer(char __user *userbuf, size_t count,
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loff_t *ppos, char *fmt, ...);
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int wl1271_debugfs_init(struct wl1271 *wl);
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void wl1271_debugfs_exit(struct wl1271 *wl);
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void wl1271_debugfs_reset(struct wl1271 *wl);
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void wl1271_debugfs_update_stats(struct wl1271 *wl);
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#define DEBUGFS_FORMAT_BUFFER_SIZE 256
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#define DEBUGFS_READONLY_FILE(name, fmt, value...) \
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static ssize_t name## _read(struct file *file, char __user *userbuf, \
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size_t count, loff_t *ppos) \
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{ \
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struct wl1271 *wl = file->private_data; \
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return wl1271_format_buffer(userbuf, count, ppos, \
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fmt "\n", ##value); \
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} \
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\
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static const struct file_operations name## _ops = { \
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.read = name## _read, \
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.open = simple_open, \
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.llseek = generic_file_llseek, \
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};
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#define DEBUGFS_ADD(name, parent) \
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do { \
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debugfs_create_file(#name, 0400, parent, \
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wl, &name## _ops); \
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} while (0)
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#define DEBUGFS_ADD_PREFIX(prefix, name, parent) \
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do { \
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debugfs_create_file(#name, 0400, parent, \
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wl, &prefix## _## name## _ops); \
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} while (0)
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#define DEBUGFS_FWSTATS_FILE(sub, name, fmt, struct_type) \
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static ssize_t sub## _ ##name## _read(struct file *file, \
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char __user *userbuf, \
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size_t count, loff_t *ppos) \
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{ \
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struct wl1271 *wl = file->private_data; \
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struct struct_type *stats = wl->stats.fw_stats; \
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\
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wl1271_debugfs_update_stats(wl); \
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\
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return wl1271_format_buffer(userbuf, count, ppos, fmt "\n", \
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stats->sub.name); \
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} \
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\
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static const struct file_operations sub## _ ##name## _ops = { \
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.read = sub## _ ##name## _read, \
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.open = simple_open, \
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.llseek = generic_file_llseek, \
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};
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#define DEBUGFS_FWSTATS_FILE_ARRAY(sub, name, len, struct_type) \
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static ssize_t sub## _ ##name## _read(struct file *file, \
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char __user *userbuf, \
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size_t count, loff_t *ppos) \
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{ \
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struct wl1271 *wl = file->private_data; \
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struct struct_type *stats = wl->stats.fw_stats; \
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char buf[DEBUGFS_FORMAT_BUFFER_SIZE] = ""; \
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int res, i; \
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\
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wl1271_debugfs_update_stats(wl); \
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\
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for (i = 0; i < len; i++) \
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res = snprintf(buf, sizeof(buf), "%s[%d] = %d\n", \
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buf, i, stats->sub.name[i]); \
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\
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return wl1271_format_buffer(userbuf, count, ppos, "%s", buf); \
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} \
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\
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static const struct file_operations sub## _ ##name## _ops = { \
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.read = sub## _ ##name## _read, \
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.open = simple_open, \
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.llseek = generic_file_llseek, \
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};
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#define DEBUGFS_FWSTATS_ADD(sub, name) \
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DEBUGFS_ADD(sub## _ ##name, stats)
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#endif /* WL1271_DEBUGFS_H */
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