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authorZhang Rui <rui.zhang@intel.com>2010-07-14 22:46:33 -0400
committerLen Brown <len.brown@intel.com>2010-08-15 00:27:51 -0400
commit47f5c892b06797336a34f1096b4b617623aa1960 (patch)
tree31613e2031b8b5ac40b48dc5f8d673c8dbe5ead6
parent1c8fce27e275fd7c6b75bc6455745f02d3903ee6 (diff)
ACPI: remove deprecated ACPI procfs I/F
Rmove deprecated ACPI procfs I/F, including /proc/acpi/debug_layer /proc/acpi/debug_level /proc/acpi/info /proc/acpi/dsdt /proc/acpi/fadt /proc/acpi/sleep because the sysfs I/F is already available and has been working well for years. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat
-rw-r--r--drivers/acpi/Kconfig6
-rw-r--r--drivers/acpi/Makefile3
-rw-r--r--drivers/acpi/bus.c2
-rw-r--r--drivers/acpi/debug.c227
-rw-r--r--drivers/acpi/internal.h7
-rw-r--r--drivers/acpi/proc.c70
-rw-r--r--drivers/acpi/system.c170
7 files changed, 1 insertions, 484 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 746411518802..d77d9c27c846 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -54,12 +54,6 @@ config ACPI_PROCFS
54 they have been replaced by functions in /sys. 54 they have been replaced by functions in /sys.
55 The deprecated files (and their replacements) include: 55 The deprecated files (and their replacements) include:
56 56
57 /proc/acpi/sleep (/sys/power/state)
58 /proc/acpi/info (/sys/module/acpi/parameters/acpica_version)
59 /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
60 /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
61 /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
62 /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
63 /proc/acpi/processor/*/power (/sys/devices/system/cpu/*/cpuidle/*) 57 /proc/acpi/processor/*/power (/sys/devices/system/cpu/*/cpuidle/*)
64 /proc/acpi/processor/*/performance (/sys/devices/system/cpu/*/ 58 /proc/acpi/processor/*/performance (/sys/devices/system/cpu/*/
65 cpufreq/*) 59 cpufreq/*)
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 03a81a844d23..3f0449622e69 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -37,9 +37,8 @@ acpi-y += ec.o
37acpi-$(CONFIG_ACPI_DOCK) += dock.o 37acpi-$(CONFIG_ACPI_DOCK) += dock.o
38acpi-y += pci_root.o pci_link.o pci_irq.o pci_bind.o 38acpi-y += pci_root.o pci_link.o pci_irq.o pci_bind.o
39acpi-y += power.o 39acpi-y += power.o
40acpi-y += system.o event.o 40acpi-y += event.o
41acpi-y += sysfs.o 41acpi-y += sysfs.o
42acpi-$(CONFIG_ACPI_DEBUG) += debug.o
43acpi-$(CONFIG_DEBUG_FS) += debugfs.o 42acpi-$(CONFIG_DEBUG_FS) += debugfs.o
44acpi-$(CONFIG_ACPI_NUMA) += numa.o 43acpi-$(CONFIG_ACPI_NUMA) += numa.o
45acpi-$(CONFIG_ACPI_PROCFS_POWER) += cm_sbs.o 44acpi-$(CONFIG_ACPI_PROCFS_POWER) += cm_sbs.o
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index bd9708b0f3f3..5c221ab535d5 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -1034,8 +1034,6 @@ static int __init acpi_init(void)
1034 acpi_scan_init(); 1034 acpi_scan_init();
1035 acpi_ec_init(); 1035 acpi_ec_init();
1036 acpi_power_init(); 1036 acpi_power_init();
1037 acpi_system_init();
1038 acpi_debug_init();
1039 acpi_sysfs_init(); 1037 acpi_sysfs_init();
1040 acpi_debugfs_init(); 1038 acpi_debugfs_init();
1041 acpi_sleep_proc_init(); 1039 acpi_sleep_proc_init();
diff --git a/drivers/acpi/debug.c b/drivers/acpi/debug.c
deleted file mode 100644
index f82240dbbba3..000000000000
--- a/drivers/acpi/debug.c
+++ /dev/null
@@ -1,227 +0,0 @@
1/*
2 * debug.c - ACPI debug interface to userspace.
3 */
4
5#include <linux/proc_fs.h>
6#include <linux/seq_file.h>
7#include <linux/init.h>
8#include <linux/module.h>
9#include <linux/kernel.h>
10#include <linux/moduleparam.h>
11#include <linux/debugfs.h>
12#include <linux/slab.h>
13#include <asm/uaccess.h>
14#include <acpi/acpi_drivers.h>
15
16#define _COMPONENT ACPI_SYSTEM_COMPONENT
17ACPI_MODULE_NAME("debug");
18
19struct acpi_dlayer {
20 const char *name;
21 unsigned long value;
22};
23struct acpi_dlevel {
24 const char *name;
25 unsigned long value;
26};
27#define ACPI_DEBUG_INIT(v) { .name = #v, .value = v }
28
29static const struct acpi_dlayer acpi_debug_layers[] = {
30 ACPI_DEBUG_INIT(ACPI_UTILITIES),
31 ACPI_DEBUG_INIT(ACPI_HARDWARE),
32 ACPI_DEBUG_INIT(ACPI_EVENTS),
33 ACPI_DEBUG_INIT(ACPI_TABLES),
34 ACPI_DEBUG_INIT(ACPI_NAMESPACE),
35 ACPI_DEBUG_INIT(ACPI_PARSER),
36 ACPI_DEBUG_INIT(ACPI_DISPATCHER),
37 ACPI_DEBUG_INIT(ACPI_EXECUTER),
38 ACPI_DEBUG_INIT(ACPI_RESOURCES),
39 ACPI_DEBUG_INIT(ACPI_CA_DEBUGGER),
40 ACPI_DEBUG_INIT(ACPI_OS_SERVICES),
41 ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
42 ACPI_DEBUG_INIT(ACPI_COMPILER),
43 ACPI_DEBUG_INIT(ACPI_TOOLS),
44
45 ACPI_DEBUG_INIT(ACPI_BUS_COMPONENT),
46 ACPI_DEBUG_INIT(ACPI_AC_COMPONENT),
47 ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT),
48 ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT),
49 ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
50 ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
51 ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT),
52 ACPI_DEBUG_INIT(ACPI_POWER_COMPONENT),
53 ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
54 ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT),
55 ACPI_DEBUG_INIT(ACPI_THERMAL_COMPONENT),
56 ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),
57 ACPI_DEBUG_INIT(ACPI_VIDEO_COMPONENT),
58 ACPI_DEBUG_INIT(ACPI_PROCESSOR_COMPONENT),
59};
60
61static const struct acpi_dlevel acpi_debug_levels[] = {
62 ACPI_DEBUG_INIT(ACPI_LV_INIT),
63 ACPI_DEBUG_INIT(ACPI_LV_DEBUG_OBJECT),
64 ACPI_DEBUG_INIT(ACPI_LV_INFO),
65
66 ACPI_DEBUG_INIT(ACPI_LV_INIT_NAMES),
67 ACPI_DEBUG_INIT(ACPI_LV_PARSE),
68 ACPI_DEBUG_INIT(ACPI_LV_LOAD),
69 ACPI_DEBUG_INIT(ACPI_LV_DISPATCH),
70 ACPI_DEBUG_INIT(ACPI_LV_EXEC),
71 ACPI_DEBUG_INIT(ACPI_LV_NAMES),
72 ACPI_DEBUG_INIT(ACPI_LV_OPREGION),
73 ACPI_DEBUG_INIT(ACPI_LV_BFIELD),
74 ACPI_DEBUG_INIT(ACPI_LV_TABLES),
75 ACPI_DEBUG_INIT(ACPI_LV_VALUES),
76 ACPI_DEBUG_INIT(ACPI_LV_OBJECTS),
77 ACPI_DEBUG_INIT(ACPI_LV_RESOURCES),
78 ACPI_DEBUG_INIT(ACPI_LV_USER_REQUESTS),
79 ACPI_DEBUG_INIT(ACPI_LV_PACKAGE),
80
81 ACPI_DEBUG_INIT(ACPI_LV_ALLOCATIONS),
82 ACPI_DEBUG_INIT(ACPI_LV_FUNCTIONS),
83 ACPI_DEBUG_INIT(ACPI_LV_OPTIMIZATIONS),
84
85 ACPI_DEBUG_INIT(ACPI_LV_MUTEX),
86 ACPI_DEBUG_INIT(ACPI_LV_THREADS),
87 ACPI_DEBUG_INIT(ACPI_LV_IO),
88 ACPI_DEBUG_INIT(ACPI_LV_INTERRUPTS),
89
90 ACPI_DEBUG_INIT(ACPI_LV_AML_DISASSEMBLE),
91 ACPI_DEBUG_INIT(ACPI_LV_VERBOSE_INFO),
92 ACPI_DEBUG_INIT(ACPI_LV_FULL_TABLES),
93 ACPI_DEBUG_INIT(ACPI_LV_EVENTS),
94};
95
96/* --------------------------------------------------------------------------
97 FS Interface (/proc)
98 -------------------------------------------------------------------------- */
99#ifdef CONFIG_ACPI_PROCFS
100#define ACPI_SYSTEM_FILE_DEBUG_LAYER "debug_layer"
101#define ACPI_SYSTEM_FILE_DEBUG_LEVEL "debug_level"
102
103static int acpi_system_debug_proc_show(struct seq_file *m, void *v)
104{
105 unsigned int i;
106
107 seq_printf(m, "%-25s\tHex SET\n", "Description");
108
109 switch ((unsigned long)m->private) {
110 case 0:
111 for (i = 0; i < ARRAY_SIZE(acpi_debug_layers); i++) {
112 seq_printf(m, "%-25s\t0x%08lX [%c]\n",
113 acpi_debug_layers[i].name,
114 acpi_debug_layers[i].value,
115 (acpi_dbg_layer & acpi_debug_layers[i].
116 value) ? '*' : ' ');
117 }
118 seq_printf(m, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
119 ACPI_ALL_DRIVERS,
120 (acpi_dbg_layer & ACPI_ALL_DRIVERS) ==
121 ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer &
122 ACPI_ALL_DRIVERS) ==
123 0 ? ' ' : '-');
124 seq_printf(m,
125 "--\ndebug_layer = 0x%08X (* = enabled, - = partial)\n",
126 acpi_dbg_layer);
127 break;
128 case 1:
129 for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
130 seq_printf(m, "%-25s\t0x%08lX [%c]\n",
131 acpi_debug_levels[i].name,
132 acpi_debug_levels[i].value,
133 (acpi_dbg_level & acpi_debug_levels[i].
134 value) ? '*' : ' ');
135 }
136 seq_printf(m, "--\ndebug_level = 0x%08X (* = enabled)\n",
137 acpi_dbg_level);
138 break;
139 }
140 return 0;
141}
142
143static int acpi_system_debug_proc_open(struct inode *inode, struct file *file)
144{
145 return single_open(file, acpi_system_debug_proc_show, PDE(inode)->data);
146}
147
148static ssize_t acpi_system_debug_proc_write(struct file *file,
149 const char __user * buffer,
150 size_t count, loff_t *pos)
151{
152 char debug_string[12] = { '\0' };
153
154
155 if (count > sizeof(debug_string) - 1)
156 return -EINVAL;
157
158 if (copy_from_user(debug_string, buffer, count))
159 return -EFAULT;
160
161 debug_string[count] = '\0';
162
163 switch ((unsigned long)PDE(file->f_path.dentry->d_inode)->data) {
164 case 0:
165 acpi_dbg_layer = simple_strtoul(debug_string, NULL, 0);
166 break;
167 case 1:
168 acpi_dbg_level = simple_strtoul(debug_string, NULL, 0);
169 break;
170 default:
171 return -EINVAL;
172 }
173
174 return count;
175}
176
177static const struct file_operations acpi_system_debug_proc_fops = {
178 .owner = THIS_MODULE,
179 .open = acpi_system_debug_proc_open,
180 .read = seq_read,
181 .llseek = seq_lseek,
182 .release = single_release,
183 .write = acpi_system_debug_proc_write,
184};
185#endif
186
187int __init acpi_procfs_init(void)
188{
189#ifdef CONFIG_ACPI_PROCFS
190 struct proc_dir_entry *entry;
191 int error = 0;
192 char *name;
193
194 /* 'debug_layer' [R/W] */
195 name = ACPI_SYSTEM_FILE_DEBUG_LAYER;
196 entry = proc_create_data(name, S_IFREG | S_IRUGO | S_IWUSR,
197 acpi_root_dir, &acpi_system_debug_proc_fops,
198 (void *)0);
199 if (!entry)
200 goto Error;
201
202 /* 'debug_level' [R/W] */
203 name = ACPI_SYSTEM_FILE_DEBUG_LEVEL;
204 entry = proc_create_data(name, S_IFREG | S_IRUGO | S_IWUSR,
205 acpi_root_dir, &acpi_system_debug_proc_fops,
206 (void *)1);
207 if (!entry)
208 goto Error;
209
210 Done:
211 return error;
212
213 Error:
214 remove_proc_entry(ACPI_SYSTEM_FILE_DEBUG_LEVEL, acpi_root_dir);
215 remove_proc_entry(ACPI_SYSTEM_FILE_DEBUG_LAYER, acpi_root_dir);
216 error = -ENODEV;
217 goto Done;
218#else
219 return 0;
220#endif
221}
222
223int __init acpi_debug_init(void)
224{
225 acpi_procfs_init();
226 return 0;
227}
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index eed823418559..e37964439d66 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -22,15 +22,8 @@
22 22
23int init_acpi_device_notify(void); 23int init_acpi_device_notify(void);
24int acpi_scan_init(void); 24int acpi_scan_init(void);
25int acpi_system_init(void);
26int acpi_sysfs_init(void); 25int acpi_sysfs_init(void);
27 26
28#ifdef CONFIG_ACPI_DEBUG
29int acpi_debug_init(void);
30#else
31static inline int acpi_debug_init(void) { return 0; }
32#endif
33
34#ifdef CONFIG_DEBUG_FS 27#ifdef CONFIG_DEBUG_FS
35int acpi_debugfs_init(void); 28int acpi_debugfs_init(void);
36#else 29#else
diff --git a/drivers/acpi/proc.c b/drivers/acpi/proc.c
index 1ac678d2c51c..afad67769db6 100644
--- a/drivers/acpi/proc.c
+++ b/drivers/acpi/proc.c
@@ -17,64 +17,11 @@
17 17
18/* 18/*
19 * this file provides support for: 19 * this file provides support for:
20 * /proc/acpi/sleep
21 * /proc/acpi/alarm 20 * /proc/acpi/alarm
22 * /proc/acpi/wakeup 21 * /proc/acpi/wakeup
23 */ 22 */
24 23
25ACPI_MODULE_NAME("sleep") 24ACPI_MODULE_NAME("sleep")
26#ifdef CONFIG_ACPI_PROCFS
27static int acpi_system_sleep_seq_show(struct seq_file *seq, void *offset)
28{
29 int i;
30
31 for (i = 0; i <= ACPI_STATE_S5; i++) {
32 if (sleep_states[i]) {
33 seq_printf(seq, "S%d ", i);
34 }
35 }
36
37 seq_puts(seq, "\n");
38
39 return 0;
40}
41
42static int acpi_system_sleep_open_fs(struct inode *inode, struct file *file)
43{
44 return single_open(file, acpi_system_sleep_seq_show, PDE(inode)->data);
45}
46
47static ssize_t
48acpi_system_write_sleep(struct file *file,
49 const char __user * buffer, size_t count, loff_t * ppos)
50{
51 char str[12];
52 u32 state = 0;
53 int error = 0;
54
55 if (count > sizeof(str) - 1)
56 goto Done;
57 memset(str, 0, sizeof(str));
58 if (copy_from_user(str, buffer, count))
59 return -EFAULT;
60
61 /* Check for S4 bios request */
62 if (!strcmp(str, "4b")) {
63 error = acpi_suspend(4);
64 goto Done;
65 }
66 state = simple_strtoul(str, NULL, 0);
67#ifdef CONFIG_HIBERNATION
68 if (state == 4) {
69 error = hibernate();
70 goto Done;
71 }
72#endif
73 error = acpi_suspend(state);
74 Done:
75 return error ? error : count;
76}
77#endif /* CONFIG_ACPI_PROCFS */
78 25
79#if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE) || !defined(CONFIG_X86) 26#if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE) || !defined(CONFIG_X86)
80/* use /sys/class/rtc/rtcX/wakealarm instead; it's not ACPI-specific */ 27/* use /sys/class/rtc/rtcX/wakealarm instead; it's not ACPI-specific */
@@ -463,17 +410,6 @@ static const struct file_operations acpi_system_wakeup_device_fops = {
463 .release = single_release, 410 .release = single_release,
464}; 411};
465 412
466#ifdef CONFIG_ACPI_PROCFS
467static const struct file_operations acpi_system_sleep_fops = {
468 .owner = THIS_MODULE,
469 .open = acpi_system_sleep_open_fs,
470 .read = seq_read,
471 .write = acpi_system_write_sleep,
472 .llseek = seq_lseek,
473 .release = single_release,
474};
475#endif /* CONFIG_ACPI_PROCFS */
476
477#ifdef HAVE_ACPI_LEGACY_ALARM 413#ifdef HAVE_ACPI_LEGACY_ALARM
478static const struct file_operations acpi_system_alarm_fops = { 414static const struct file_operations acpi_system_alarm_fops = {
479 .owner = THIS_MODULE, 415 .owner = THIS_MODULE,
@@ -495,12 +431,6 @@ static u32 rtc_handler(void *context)
495 431
496int __init acpi_sleep_proc_init(void) 432int __init acpi_sleep_proc_init(void)
497{ 433{
498#ifdef CONFIG_ACPI_PROCFS
499 /* 'sleep' [R/W] */
500 proc_create("sleep", S_IFREG | S_IRUGO | S_IWUSR,
501 acpi_root_dir, &acpi_system_sleep_fops);
502#endif /* CONFIG_ACPI_PROCFS */
503
504#ifdef HAVE_ACPI_LEGACY_ALARM 434#ifdef HAVE_ACPI_LEGACY_ALARM
505 /* 'alarm' [R/W] */ 435 /* 'alarm' [R/W] */
506 proc_create("alarm", S_IFREG | S_IRUGO | S_IWUSR, 436 proc_create("alarm", S_IFREG | S_IRUGO | S_IWUSR,
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
deleted file mode 100644
index d70481f32c89..000000000000
--- a/drivers/acpi/system.c
+++ /dev/null
@@ -1,170 +0,0 @@
1/*
2 * acpi_system.c - ACPI System Driver ($Revision: 63 $)
3 *
4 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
5 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
6 *
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or (at
12 * your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.,
21 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
22 *
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
24 */
25
26#include <linux/proc_fs.h>
27#include <linux/seq_file.h>
28#include <linux/slab.h>
29#include <linux/init.h>
30#include <linux/string.h>
31#include <asm/uaccess.h>
32
33#include <acpi/acpi_drivers.h>
34
35#define PREFIX "ACPI: "
36
37#define _COMPONENT ACPI_SYSTEM_COMPONENT
38ACPI_MODULE_NAME("system");
39
40#define ACPI_SYSTEM_CLASS "system"
41#define ACPI_SYSTEM_DEVICE_NAME "System"
42
43/* --------------------------------------------------------------------------
44 FS Interface (/proc)
45 -------------------------------------------------------------------------- */
46#ifdef CONFIG_ACPI_PROCFS
47#define ACPI_SYSTEM_FILE_INFO "info"
48#define ACPI_SYSTEM_FILE_EVENT "event"
49#define ACPI_SYSTEM_FILE_DSDT "dsdt"
50#define ACPI_SYSTEM_FILE_FADT "fadt"
51
52static int acpi_system_read_info(struct seq_file *seq, void *offset)
53{
54
55 seq_printf(seq, "version: %x\n", ACPI_CA_VERSION);
56 return 0;
57}
58
59static int acpi_system_info_open_fs(struct inode *inode, struct file *file)
60{
61 return single_open(file, acpi_system_read_info, PDE(inode)->data);
62}
63
64static const struct file_operations acpi_system_info_ops = {
65 .owner = THIS_MODULE,
66 .open = acpi_system_info_open_fs,
67 .read = seq_read,
68 .llseek = seq_lseek,
69 .release = single_release,
70};
71
72static ssize_t acpi_system_read_dsdt(struct file *, char __user *, size_t,
73 loff_t *);
74
75static const struct file_operations acpi_system_dsdt_ops = {
76 .owner = THIS_MODULE,
77 .read = acpi_system_read_dsdt,
78};
79
80static ssize_t
81acpi_system_read_dsdt(struct file *file,
82 char __user * buffer, size_t count, loff_t * ppos)
83{
84 acpi_status status = AE_OK;
85 struct acpi_table_header *dsdt = NULL;
86 ssize_t res;
87
88 status = acpi_get_table(ACPI_SIG_DSDT, 1, &dsdt);
89 if (ACPI_FAILURE(status))
90 return -ENODEV;
91
92 res = simple_read_from_buffer(buffer, count, ppos, dsdt, dsdt->length);
93
94 return res;
95}
96
97static ssize_t acpi_system_read_fadt(struct file *, char __user *, size_t,
98 loff_t *);
99
100static const struct file_operations acpi_system_fadt_ops = {
101 .owner = THIS_MODULE,
102 .read = acpi_system_read_fadt,
103};
104
105static ssize_t
106acpi_system_read_fadt(struct file *file,
107 char __user * buffer, size_t count, loff_t * ppos)
108{
109 acpi_status status = AE_OK;
110 struct acpi_table_header *fadt = NULL;
111 ssize_t res;
112
113 status = acpi_get_table(ACPI_SIG_FADT, 1, &fadt);
114 if (ACPI_FAILURE(status))
115 return -ENODEV;
116
117 res = simple_read_from_buffer(buffer, count, ppos, fadt, fadt->length);
118
119 return res;
120}
121
122static int acpi_system_procfs_init(void)
123{
124 struct proc_dir_entry *entry;
125 int error = 0;
126
127 /* 'info' [R] */
128 entry = proc_create(ACPI_SYSTEM_FILE_INFO, S_IRUGO, acpi_root_dir,
129 &acpi_system_info_ops);
130 if (!entry)
131 goto Error;
132
133 /* 'dsdt' [R] */
134 entry = proc_create(ACPI_SYSTEM_FILE_DSDT, S_IRUSR, acpi_root_dir,
135 &acpi_system_dsdt_ops);
136 if (!entry)
137 goto Error;
138
139 /* 'fadt' [R] */
140 entry = proc_create(ACPI_SYSTEM_FILE_FADT, S_IRUSR, acpi_root_dir,
141 &acpi_system_fadt_ops);
142 if (!entry)
143 goto Error;
144
145 Done:
146 return error;
147
148 Error:
149 remove_proc_entry(ACPI_SYSTEM_FILE_FADT, acpi_root_dir);
150 remove_proc_entry(ACPI_SYSTEM_FILE_DSDT, acpi_root_dir);
151 remove_proc_entry(ACPI_SYSTEM_FILE_INFO, acpi_root_dir);
152
153 error = -EFAULT;
154 goto Done;
155}
156#else
157static int acpi_system_procfs_init(void)
158{
159 return 0;
160}
161#endif
162
163int __init acpi_system_init(void)
164{
165 int result;
166
167 result = acpi_system_procfs_init();
168
169 return result;
170}
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-30 14:54:13 -0500