This reverts commit 2d670ea2bd53a9792f453bb5b97cb8ef695988ff.
---
Documentation/sound/designs/index.rst | 1 -
.../sound/designs/jack-injection.rst | 166 ----------
include/sound/core.h | 6 -
include/sound/jack.h | 1 -
sound/core/Kconfig | 9 -
sound/core/init.c | 16 -
sound/core/jack.c | 304 +-----------------
sound/core/sound.c | 13 -
8 files changed, 4 insertions(+), 512 deletions(-)
delete mode 100644 Documentation/sound/designs/jack-injection.rst
diff --git a/Documentation/sound/designs/index.rst b/Documentation/sound/designs/index.rst
index 1eb08e7bae52..f0749943ccb2 100644
--- a/Documentation/sound/designs/index.rst
+++ b/Documentation/sound/designs/index.rst
@@ -14,4 +14,3 @@ Designs and Implementations
powersave
oss-emulation
seq-oss
- jack-injection
diff --git a/Documentation/sound/designs/jack-injection.rst b/Documentation/sound/designs/jack-injection.rst
deleted file mode 100644
index f9790521523e..000000000000
--- a/Documentation/sound/designs/jack-injection.rst
+++ /dev/null
@@ -1,166 +0,0 @@
-============================
-ALSA Jack Software Injection
-============================
-
-Simple Introduction On Jack Injection
-=====================================
-
-Here jack injection means users could inject plugin or plugout events
-to the audio jacks through debugfs interface, it is helpful to
-validate ALSA userspace changes. For example, we change the audio
-profile switching code in the pulseaudio, and we want to verify if the
-change works as expected and if the change introduce the regression,
-in this case, we could inject plugin or plugout events to an audio
-jack or to some audio jacks, we don't need to physically access the
-machine and plug/unplug physical devices to the audio jack.
-
-In this design, an audio jack doesn't equal to a physical audio jack.
-Sometimes a physical audio jack contains multi functions, and the
-ALSA driver creates multi ``jack_kctl`` for a ``snd_jack``, here the
-``snd_jack`` represents a physical audio jack and the ``jack_kctl``
-represents a function, for example a physical jack has two functions:
-headphone and mic_in, the ALSA ASoC driver will build 2 ``jack_kctl``
-for this jack. The jack injection is implemented based on the
-``jack_kctl`` instead of ``snd_jack``.
-
-To inject events to audio jacks, we need to enable the jack injection
-via ``sw_inject_enable`` first, once it is enabled, this jack will not
-change the state by hardware events anymore, we could inject plugin or
-plugout events via ``jackin_inject`` and check the jack state via
-``status``, after we finish our test, we need to disable the jack
-injection via ``sw_inject_enable`` too, once it is disabled, the jack
-state will be restored according to the last reported hardware events
-and will change by future hardware events.
-
-The Layout of Jack Injection Interface
-======================================
-
-If users enable the SND_JACK_INJECTION_DEBUG in the kernel, the audio
-jack injection interface will be created as below:
-::
-
- $debugfs_mount_dir/sound
- |-- card0
- |-- |-- HDMI_DP_pcm_10_Jack
- |-- |-- |-- jackin_inject
- |-- |-- |-- kctl_id
- |-- |-- |-- mask_bits
- |-- |-- |-- status
- |-- |-- |-- sw_inject_enable
- |-- |-- |-- type
- ...
- |-- |-- HDMI_DP_pcm_9_Jack
- |-- |-- jackin_inject
- |-- |-- kctl_id
- |-- |-- mask_bits
- |-- |-- status
- |-- |-- sw_inject_enable
- |-- |-- type
- |-- card1
- |-- HDMI_DP_pcm_5_Jack
- |-- |-- jackin_inject
- |-- |-- kctl_id
- |-- |-- mask_bits
- |-- |-- status
- |-- |-- sw_inject_enable
- |-- |-- type
- ...
- |-- Headphone_Jack
- |-- |-- jackin_inject
- |-- |-- kctl_id
- |-- |-- mask_bits
- |-- |-- status
- |-- |-- sw_inject_enable
- |-- |-- type
- |-- Headset_Mic_Jack
- |-- jackin_inject
- |-- kctl_id
- |-- mask_bits
- |-- status
- |-- sw_inject_enable
- |-- type
-
-The Explanation Of The Nodes
-======================================
-
-kctl_id
- read-only, get jack_kctl->kctl's id
- ::
-
- sound/card1/Headphone_Jack# cat kctl_id
- Headphone Jack
-
-mask_bits
- read-only, get jack_kctl's supported events mask_bits
- ::
-
- sound/card1/Headphone_Jack# cat mask_bits
- 0x0001 HEADPHONE(0x0001)
-
-status
- read-only, get jack_kctl's current status
-
-- headphone unplugged:
-
- ::
-
- sound/card1/Headphone_Jack# cat status
- Unplugged
-
-- headphone plugged:
-
- ::
-
- sound/card1/Headphone_Jack# cat status
- Plugged
-
-type
- read-only, get snd_jack's supported events from type (all supported events on the physical audio jack)
- ::
-
- sound/card1/Headphone_Jack# cat type
- 0x7803 HEADPHONE(0x0001) MICROPHONE(0x0002) BTN_3(0x0800) BTN_2(0x1000) BTN_1(0x2000) BTN_0(0x4000)
-
-sw_inject_enable
- read-write, enable or disable injection
-
-- injection disabled:
-
- ::
-
- sound/card1/Headphone_Jack# cat sw_inject_enable
- Jack: Headphone Jack Inject Enabled: 0
-
-- injection enabled:
-
- ::
-
- sound/card1/Headphone_Jack# cat sw_inject_enable
- Jack: Headphone Jack Inject Enabled: 1
-
-- to enable jack injection:
-
- ::
-
- sound/card1/Headphone_Jack# echo 1 > sw_inject_enable
-
-- to disable jack injection:
-
- ::
-
- sound/card1/Headphone_Jack# echo 0 > sw_inject_enable
-
-jackin_inject
- write-only, inject plugin or plugout
-
-- to inject plugin:
-
- ::
-
- sound/card1/Headphone_Jack# echo 1 > jackin_inject
-
-- to inject plugout:
-
- ::
-
- sound/card1/Headphone_Jack# echo 0 > jackin_inject
diff --git a/include/sound/core.h b/include/sound/core.h
index 2e24f194ef70..0462c577d7a3 100644
--- a/include/sound/core.h
+++ b/include/sound/core.h
@@ -122,9 +122,6 @@ struct snd_card {
size_t total_pcm_alloc_bytes; /* total amount of allocated buffers */
struct mutex memory_mutex; /* protection for the above */
-#ifdef CONFIG_SND_DEBUG
- struct dentry *debugfs_root; /* debugfs root for card */
-#endif
#ifdef CONFIG_PM
unsigned int power_state; /* power state */
@@ -183,9 +180,6 @@ static inline struct device *snd_card_get_device_link(struct snd_card *card)
extern int snd_major;
extern int snd_ecards_limit;
extern struct class *sound_class;
-#ifdef CONFIG_SND_DEBUG
-extern struct dentry *sound_debugfs_root;
-#endif
void snd_request_card(int card);
diff --git a/include/sound/jack.h b/include/sound/jack.h
index 1181f536557e..9eb2b5ec1ec4 100644
--- a/include/sound/jack.h
+++ b/include/sound/jack.h
@@ -67,7 +67,6 @@ struct snd_jack {
char name[100];
unsigned int key[6]; /* Keep in sync with definitions above */
#endif /* CONFIG_SND_JACK_INPUT_DEV */
- int hw_status_cache;
void *private_data;
void (*private_free)(struct snd_jack *);
};
diff --git a/sound/core/Kconfig b/sound/core/Kconfig
index a4050f87f230..d4554f376160 100644
--- a/sound/core/Kconfig
+++ b/sound/core/Kconfig
@@ -187,15 +187,6 @@ config SND_CTL_VALIDATION
from the driver are in the proper ranges or the check of the invalid
access at out-of-array areas.
-config SND_JACK_INJECTION_DEBUG
- bool "Sound jack injection interface via debugfs"
- depends on SND_JACK && SND_DEBUG && DEBUG_FS
- help
- This option can be used to enable or disable sound jack
- software injection.
- Say Y if you are debugging via jack injection interface.
- If unsure select "N".
-
config SND_VMASTER
bool
diff --git a/sound/core/init.c b/sound/core/init.c
index d4e78b176793..56834febc7a4 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -13,7 +13,6 @@
#include <linux/time.h>
#include <linux/ctype.h>
#include <linux/pm.h>
-#include <linux/debugfs.h>
#include <linux/completion.h>
#include <sound/core.h>
@@ -162,9 +161,6 @@ int snd_card_new(struct device *parent, int idx, const char *xid,
{
struct snd_card *card;
int err;
-#ifdef CONFIG_SND_DEBUG
- char name[8];
-#endif
if (snd_BUG_ON(!card_ret))
return -EINVAL;
@@ -248,12 +244,6 @@ int snd_card_new(struct device *parent, int idx, const char *xid,
dev_err(parent, "unable to create card info\n");
goto __error_ctl;
}
-
-#ifdef CONFIG_SND_DEBUG
- sprintf(name, "card%d", idx);
- card->debugfs_root = debugfs_create_dir(name, sound_debugfs_root);
-#endif
-
*card_ret = card;
return 0;
@@ -536,12 +526,6 @@ int snd_card_free(struct snd_card *card)
return ret;
/* wait, until all devices are ready for the free operation */
wait_for_completion(&released);
-
-#ifdef CONFIG_SND_DEBUG
- debugfs_remove(card->debugfs_root);
- card->debugfs_root = NULL;
-#endif
-
return 0;
}
EXPORT_SYMBOL(snd_card_free);
diff --git a/sound/core/jack.c b/sound/core/jack.c
index 32350c6aba84..503c8af79d55 100644
--- a/sound/core/jack.c
+++ b/sound/core/jack.c
@@ -8,9 +8,6 @@
#include <linux/input.h>
#include <linux/slab.h>
#include <linux/module.h>
-#include <linux/ctype.h>
-#include <linux/mm.h>
-#include <linux/debugfs.h>
#include <sound/jack.h>
#include <sound/core.h>
#include <sound/control.h>
@@ -19,11 +16,6 @@ struct snd_jack_kctl {
struct snd_kcontrol *kctl;
struct list_head list; /* list of controls belong to the same jack */
unsigned int mask_bits; /* only masked status bits are reported via kctl */
- struct snd_jack *jack; /* pointer to struct snd_jack */
- bool sw_inject_enable; /* allow to inject plug event via debugfs */
-#ifdef CONFIG_SND_JACK_INJECTION_DEBUG
- struct dentry *jack_debugfs_root; /* jack_kctl debugfs root */
-#endif
};
#ifdef CONFIG_SND_JACK_INPUT_DEV
@@ -117,291 +109,12 @@ static int snd_jack_dev_register(struct snd_device *device)
}
#endif /* CONFIG_SND_JACK_INPUT_DEV */
-#ifdef CONFIG_SND_JACK_INJECTION_DEBUG
-static void snd_jack_inject_report(struct snd_jack_kctl *jack_kctl, int status)
-{
- struct snd_jack *jack;
-#ifdef CONFIG_SND_JACK_INPUT_DEV
- int i;
-#endif
- if (!jack_kctl)
- return;
-
- jack = jack_kctl->jack;
-
- if (jack_kctl->sw_inject_enable)
- snd_kctl_jack_report(jack->card, jack_kctl->kctl,
- status & jack_kctl->mask_bits);
-
-#ifdef CONFIG_SND_JACK_INPUT_DEV
- if (!jack->input_dev)
- return;
-
- for (i = 0; i < ARRAY_SIZE(jack->key); i++) {
- int testbit = ((SND_JACK_BTN_0 >> i) & jack_kctl->mask_bits);
-
- if (jack->type & testbit)
- input_report_key(jack->input_dev, jack->key[i],
- status & testbit);
- }
-
- for (i = 0; i < ARRAY_SIZE(jack_switch_types); i++) {
- int testbit = ((1 << i) & jack_kctl->mask_bits);
-
- if (jack->type & testbit)
- input_report_switch(jack->input_dev,
- jack_switch_types[i],
- status & testbit);
- }
-
- input_sync(jack->input_dev);
-#endif /* CONFIG_SND_JACK_INPUT_DEV */
-}
-
-static ssize_t sw_inject_enable_read(struct file *file,
- char __user *to, size_t count, loff_t *ppos)
-{
- struct snd_jack_kctl *jack_kctl = file->private_data;
- int len, ret;
- char buf[128];
-
- len = scnprintf(buf, sizeof(buf), "%s: %s\t\t%s: %i\n", "Jack", jack_kctl->kctl->id.name,
- "Inject Enabled", jack_kctl->sw_inject_enable);
- ret = simple_read_from_buffer(to, count, ppos, buf, len);
-
- return ret;
-}
-
-static ssize_t sw_inject_enable_write(struct file *file,
- const char __user *from, size_t count, loff_t *ppos)
-{
- struct snd_jack_kctl *jack_kctl = file->private_data;
- int ret, err;
- unsigned long enable;
- char buf[8] = { 0 };
-
- ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, from, count);
- err = kstrtoul(buf, 0, &enable);
- if (err)
- return err;
-
- if (jack_kctl->sw_inject_enable == (!!enable))
- return ret;
-
- jack_kctl->sw_inject_enable = !!enable;
-
- if (!jack_kctl->sw_inject_enable)
- snd_jack_report(jack_kctl->jack, jack_kctl->jack->hw_status_cache);
-
- return ret;
-}
-
-static ssize_t jackin_inject_write(struct file *file,
- const char __user *from, size_t count, loff_t *ppos)
-{
- struct snd_jack_kctl *jack_kctl = file->private_data;
- int ret, err;
- unsigned long enable;
- char buf[8] = { 0 };
-
- if (!jack_kctl->sw_inject_enable)
- return -EINVAL;
-
- ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, from, count);
- err = kstrtoul(buf, 0, &enable);
- if (err)
- return err;
-
- snd_jack_inject_report(jack_kctl, !!enable ? jack_kctl->mask_bits : 0);
-
- return ret;
-}
-
-static ssize_t jack_kctl_id_read(struct file *file,
- char __user *to, size_t count, loff_t *ppos)
-{
- struct snd_jack_kctl *jack_kctl = file->private_data;
- char buf[64];
- int len, ret;
-
- len = scnprintf(buf, sizeof(buf), "%s\n", jack_kctl->kctl->id.name);
- ret = simple_read_from_buffer(to, count, ppos, buf, len);
-
- return ret;
-}
-
-/* the bit definition is aligned with snd_jack_types in jack.h */
-static const char * const jack_events_name[] = {
- "HEADPHONE(0x0001)", "MICROPHONE(0x0002)", "LINEOUT(0x0004)",
- "MECHANICAL(0x0008)", "VIDEOOUT(0x0010)", "LINEIN(0x0020)",
- "", "", "", "BTN_5(0x0200)", "BTN_4(0x0400)", "BTN_3(0x0800)",
- "BTN_2(0x1000)", "BTN_1(0x2000)", "BTN_0(0x4000)", "",
-};
-
-/* the recommended buffer size is 256 */
-static int parse_mask_bits(unsigned int mask_bits, char *buf, size_t buf_size)
-{
- int i;
-
- scnprintf(buf, buf_size, "0x%04x", mask_bits);
-
- for (i = 0; i < ARRAY_SIZE(jack_events_name); i++)
- if (mask_bits & (1 << i)) {
- strlcat(buf, " ", buf_size);
- strlcat(buf, jack_events_name[i], buf_size);
- }
- strlcat(buf, "\n", buf_size);
-
- return strlen(buf);
-}
-
-static ssize_t jack_kctl_mask_bits_read(struct file *file,
- char __user *to, size_t count, loff_t *ppos)
-{
- struct snd_jack_kctl *jack_kctl = file->private_data;
- char buf[256];
- int len, ret;
-
- len = parse_mask_bits(jack_kctl->mask_bits, buf, sizeof(buf));
- ret = simple_read_from_buffer(to, count, ppos, buf, len);
-
- return ret;
-}
-
-static ssize_t jack_kctl_status_read(struct file *file,
- char __user *to, size_t count, loff_t *ppos)
-{
- struct snd_jack_kctl *jack_kctl = file->private_data;
- char buf[16];
- int len, ret;
-
- len = scnprintf(buf, sizeof(buf), "%s\n", jack_kctl->kctl->private_value ?
- "Plugged" : "Unplugged");
- ret = simple_read_from_buffer(to, count, ppos, buf, len);
-
- return ret;
-}
-
-#ifdef CONFIG_SND_JACK_INPUT_DEV
-static ssize_t jack_type_read(struct file *file,
- char __user *to, size_t count, loff_t *ppos)
-{
- struct snd_jack_kctl *jack_kctl = file->private_data;
- char buf[256];
- int len, ret;
-
- len = parse_mask_bits(jack_kctl->jack->type, buf, sizeof(buf));
- ret = simple_read_from_buffer(to, count, ppos, buf, len);
-
- return ret;
-}
-
-static const struct file_operations jack_type_fops = {
- .open = simple_open,
- .read = jack_type_read,
- .llseek = default_llseek,
-};
-#endif
-
-static const struct file_operations sw_inject_enable_fops = {
- .open = simple_open,
- .read = sw_inject_enable_read,
- .write = sw_inject_enable_write,
- .llseek = default_llseek,
-};
-
-static const struct file_operations jackin_inject_fops = {
- .open = simple_open,
- .write = jackin_inject_write,
- .llseek = default_llseek,
-};
-
-static const struct file_operations jack_kctl_id_fops = {
- .open = simple_open,
- .read = jack_kctl_id_read,
- .llseek = default_llseek,
-};
-
-static const struct file_operations jack_kctl_mask_bits_fops = {
- .open = simple_open,
- .read = jack_kctl_mask_bits_read,
- .llseek = default_llseek,
-};
-
-static const struct file_operations jack_kctl_status_fops = {
- .open = simple_open,
- .read = jack_kctl_status_read,
- .llseek = default_llseek,
-};
-
-static int snd_jack_debugfs_add_inject_node(struct snd_jack *jack,
- struct snd_jack_kctl *jack_kctl)
-{
- char *tname;
- int i;
-
- /* Don't create injection interface for Phantom jacks */
- if (strstr(jack_kctl->kctl->id.name, "Phantom"))
- return 0;
-
- tname = kstrdup(jack_kctl->kctl->id.name, GFP_KERNEL);
- if (!tname)
- return -ENOMEM;
-
- /* replace the chars which are not suitable for folder's name with _ */
- for (i = 0; tname[i]; i++)
- if (!isalnum(tname[i]))
- tname[i] = '_';
-
- jack_kctl->jack_debugfs_root = debugfs_create_dir(tname, jack->card->debugfs_root);
- kfree(tname);
-
- debugfs_create_file("sw_inject_enable", 0644, jack_kctl->jack_debugfs_root, jack_kctl,
- &sw_inject_enable_fops);
-
- debugfs_create_file("jackin_inject", 0200, jack_kctl->jack_debugfs_root, jack_kctl,
- &jackin_inject_fops);
-
- debugfs_create_file("kctl_id", 0444, jack_kctl->jack_debugfs_root, jack_kctl,
- &jack_kctl_id_fops);
-
- debugfs_create_file("mask_bits", 0444, jack_kctl->jack_debugfs_root, jack_kctl,
- &jack_kctl_mask_bits_fops);
-
- debugfs_create_file("status", 0444, jack_kctl->jack_debugfs_root, jack_kctl,
- &jack_kctl_status_fops);
-
-#ifdef CONFIG_SND_JACK_INPUT_DEV
- debugfs_create_file("type", 0444, jack_kctl->jack_debugfs_root, jack_kctl,
- &jack_type_fops);
-#endif
- return 0;
-}
-
-static void snd_jack_debugfs_clear_inject_node(struct snd_jack_kctl *jack_kctl)
-{
- debugfs_remove(jack_kctl->jack_debugfs_root);
- jack_kctl->jack_debugfs_root = NULL;
-}
-#else /* CONFIG_SND_JACK_INJECTION_DEBUG */
-static int snd_jack_debugfs_add_inject_node(struct snd_jack *jack,
- struct snd_jack_kctl *jack_kctl)
-{
- return 0;
-}
-
-static void snd_jack_debugfs_clear_inject_node(struct snd_jack_kctl *jack_kctl)
-{
-}
-#endif /* CONFIG_SND_JACK_INJECTION_DEBUG */
-
static void snd_jack_kctl_private_free(struct snd_kcontrol *kctl)
{
struct snd_jack_kctl *jack_kctl;
jack_kctl = kctl->private_data;
if (jack_kctl) {
- snd_jack_debugfs_clear_inject_node(jack_kctl);
list_del(&jack_kctl->list);
kfree(jack_kctl);
}
@@ -409,9 +122,7 @@ static void snd_jack_kctl_private_free(struct snd_kcontrol *kctl)
static void snd_jack_kctl_add(struct snd_jack *jack, struct snd_jack_kctl *jack_kctl)
{
- jack_kctl->jack = jack;
list_add_tail(&jack_kctl->list, &jack->kctl_list);
- snd_jack_debugfs_add_inject_node(jack, jack_kctl);
}
static struct snd_jack_kctl * snd_jack_kctl_new(struct snd_card *card, const char *name, unsigned int mask)
@@ -629,7 +340,6 @@ EXPORT_SYMBOL(snd_jack_set_key);
void snd_jack_report(struct snd_jack *jack, int status)
{
struct snd_jack_kctl *jack_kctl;
- unsigned int mask_bits = 0;
#ifdef CONFIG_SND_JACK_INPUT_DEV
int i;
#endif
@@ -637,21 +347,16 @@ void snd_jack_report(struct snd_jack *jack, int status)
if (!jack)
return;
- jack->hw_status_cache = status;
-
list_for_each_entry(jack_kctl, &jack->kctl_list, list)
- if (jack_kctl->sw_inject_enable)
- mask_bits |= jack_kctl->mask_bits;
- else
- snd_kctl_jack_report(jack->card, jack_kctl->kctl,
- status & jack_kctl->mask_bits);
+ snd_kctl_jack_report(jack->card, jack_kctl->kctl,
+ status & jack_kctl->mask_bits);
#ifdef CONFIG_SND_JACK_INPUT_DEV
if (!jack->input_dev)
return;
for (i = 0; i < ARRAY_SIZE(jack->key); i++) {
- int testbit = ((SND_JACK_BTN_0 >> i) & ~mask_bits);
+ int testbit = SND_JACK_BTN_0 >> i;
if (jack->type & testbit)
input_report_key(jack->input_dev, jack->key[i],
@@ -659,8 +364,7 @@ void snd_jack_report(struct snd_jack *jack, int status)
}
for (i = 0; i < ARRAY_SIZE(jack_switch_types); i++) {
- int testbit = ((1 << i) & ~mask_bits);
-
+ int testbit = 1 << i;
if (jack->type & testbit)
input_report_switch(jack->input_dev,
jack_switch_types[i],
diff --git a/sound/core/sound.c b/sound/core/sound.c
index 2f759febe365..b75f78f2c4b8 100644
--- a/sound/core/sound.c
+++ b/sound/core/sound.c
@@ -9,7 +9,6 @@
#include <linux/time.h>
#include <linux/device.h>
#include <linux/module.h>
-#include <linux/debugfs.h>
#include <sound/core.h>
#include <sound/minors.h>
#include <sound/info.h>
@@ -40,11 +39,6 @@ MODULE_ALIAS_CHARDEV_MAJOR(CONFIG_SND_MAJOR);
int snd_ecards_limit;
EXPORT_SYMBOL(snd_ecards_limit);
-#ifdef CONFIG_SND_DEBUG
-struct dentry *sound_debugfs_root;
-EXPORT_SYMBOL_GPL(sound_debugfs_root);
-#endif
-
static struct snd_minor *snd_minors[SNDRV_OS_MINORS];
static DEFINE_MUTEX(sound_mutex);
@@ -401,10 +395,6 @@ static int __init alsa_sound_init(void)
unregister_chrdev(major, "alsa");
return -ENOMEM;
}
-
-#ifdef CONFIG_SND_DEBUG
- sound_debugfs_root = debugfs_create_dir("sound", NULL);
-#endif
#ifndef MODULE
pr_info("Advanced Linux Sound Architecture Driver Initialized.\n");
#endif
@@ -413,9 +403,6 @@ static int __init alsa_sound_init(void)
static void __exit alsa_sound_exit(void)
{
-#ifdef CONFIG_SND_DEBUG
- debugfs_remove(sound_debugfs_root);
-#endif
snd_info_done();
unregister_chrdev(major, "alsa");
}
--
2.20.1
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