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bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
243 lines
6.4 KiB
C
243 lines
6.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Advanced Linux Sound Architecture
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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*/
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#include <linux/init.h>
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#include <linux/export.h>
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#include <linux/slab.h>
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#include <linux/time.h>
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#include <sound/core.h>
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#include <sound/minors.h>
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#include <sound/info.h>
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#include <linux/sound.h>
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#include <linux/mutex.h>
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#define SNDRV_OSS_MINORS 256
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static struct snd_minor *snd_oss_minors[SNDRV_OSS_MINORS];
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static DEFINE_MUTEX(sound_oss_mutex);
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/* NOTE: This function increments the refcount of the associated card like
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* snd_lookup_minor_data(); the caller must call snd_card_unref() appropriately
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*/
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void *snd_lookup_oss_minor_data(unsigned int minor, int type)
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{
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struct snd_minor *mreg;
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void *private_data;
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if (minor >= ARRAY_SIZE(snd_oss_minors))
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return NULL;
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guard(mutex)(&sound_oss_mutex);
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mreg = snd_oss_minors[minor];
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if (mreg && mreg->type == type) {
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private_data = mreg->private_data;
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if (private_data && mreg->card_ptr)
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get_device(&mreg->card_ptr->card_dev);
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} else
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private_data = NULL;
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return private_data;
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}
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EXPORT_SYMBOL(snd_lookup_oss_minor_data);
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static int snd_oss_kernel_minor(int type, struct snd_card *card, int dev)
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{
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int minor;
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switch (type) {
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case SNDRV_OSS_DEVICE_TYPE_MIXER:
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if (snd_BUG_ON(!card || dev < 0 || dev > 1))
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return -EINVAL;
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minor = SNDRV_MINOR_OSS(card->number, (dev ? SNDRV_MINOR_OSS_MIXER1 : SNDRV_MINOR_OSS_MIXER));
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break;
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case SNDRV_OSS_DEVICE_TYPE_SEQUENCER:
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minor = SNDRV_MINOR_OSS_SEQUENCER;
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break;
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case SNDRV_OSS_DEVICE_TYPE_MUSIC:
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minor = SNDRV_MINOR_OSS_MUSIC;
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break;
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case SNDRV_OSS_DEVICE_TYPE_PCM:
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if (snd_BUG_ON(!card || dev < 0 || dev > 1))
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return -EINVAL;
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minor = SNDRV_MINOR_OSS(card->number, (dev ? SNDRV_MINOR_OSS_PCM1 : SNDRV_MINOR_OSS_PCM));
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break;
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case SNDRV_OSS_DEVICE_TYPE_MIDI:
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if (snd_BUG_ON(!card || dev < 0 || dev > 1))
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return -EINVAL;
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minor = SNDRV_MINOR_OSS(card->number, (dev ? SNDRV_MINOR_OSS_MIDI1 : SNDRV_MINOR_OSS_MIDI));
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break;
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case SNDRV_OSS_DEVICE_TYPE_DMFM:
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minor = SNDRV_MINOR_OSS(card->number, SNDRV_MINOR_OSS_DMFM);
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break;
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case SNDRV_OSS_DEVICE_TYPE_SNDSTAT:
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minor = SNDRV_MINOR_OSS_SNDSTAT;
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break;
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default:
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return -EINVAL;
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}
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if (minor < 0 || minor >= SNDRV_OSS_MINORS)
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return -EINVAL;
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return minor;
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}
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int snd_register_oss_device(int type, struct snd_card *card, int dev,
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const struct file_operations *f_ops, void *private_data)
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{
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int minor = snd_oss_kernel_minor(type, card, dev);
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int minor_unit;
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struct snd_minor *preg;
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int cidx = SNDRV_MINOR_OSS_CARD(minor);
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int track2 = -1;
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int register1 = -1, register2 = -1;
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struct device *carddev = snd_card_get_device_link(card);
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if (card && card->number >= SNDRV_MINOR_OSS_DEVICES)
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return 0; /* ignore silently */
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if (minor < 0)
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return minor;
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preg = kmalloc_obj(struct snd_minor);
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if (preg == NULL)
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return -ENOMEM;
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preg->type = type;
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preg->card = card ? card->number : -1;
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preg->device = dev;
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preg->f_ops = f_ops;
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preg->private_data = private_data;
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preg->card_ptr = card;
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guard(mutex)(&sound_oss_mutex);
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snd_oss_minors[minor] = preg;
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minor_unit = SNDRV_MINOR_OSS_DEVICE(minor);
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switch (minor_unit) {
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case SNDRV_MINOR_OSS_PCM:
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track2 = SNDRV_MINOR_OSS(cidx, SNDRV_MINOR_OSS_AUDIO);
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break;
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case SNDRV_MINOR_OSS_MIDI:
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track2 = SNDRV_MINOR_OSS(cidx, SNDRV_MINOR_OSS_DMMIDI);
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break;
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case SNDRV_MINOR_OSS_MIDI1:
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track2 = SNDRV_MINOR_OSS(cidx, SNDRV_MINOR_OSS_DMMIDI1);
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break;
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}
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register1 = register_sound_special_device(f_ops, minor, carddev);
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if (register1 != minor)
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goto __end;
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if (track2 >= 0) {
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register2 = register_sound_special_device(f_ops, track2,
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carddev);
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if (register2 != track2)
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goto __end;
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snd_oss_minors[track2] = preg;
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}
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return 0;
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__end:
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if (register2 >= 0)
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unregister_sound_special(register2);
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if (register1 >= 0)
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unregister_sound_special(register1);
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snd_oss_minors[minor] = NULL;
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kfree(preg);
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return -EBUSY;
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}
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EXPORT_SYMBOL(snd_register_oss_device);
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int snd_unregister_oss_device(int type, struct snd_card *card, int dev)
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{
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int minor = snd_oss_kernel_minor(type, card, dev);
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int cidx = SNDRV_MINOR_OSS_CARD(minor);
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int track2 = -1;
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struct snd_minor *mptr;
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if (card && card->number >= SNDRV_MINOR_OSS_DEVICES)
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return 0;
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if (minor < 0)
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return minor;
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guard(mutex)(&sound_oss_mutex);
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mptr = snd_oss_minors[minor];
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if (mptr == NULL)
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return -ENOENT;
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switch (SNDRV_MINOR_OSS_DEVICE(minor)) {
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case SNDRV_MINOR_OSS_PCM:
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track2 = SNDRV_MINOR_OSS(cidx, SNDRV_MINOR_OSS_AUDIO);
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break;
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case SNDRV_MINOR_OSS_MIDI:
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track2 = SNDRV_MINOR_OSS(cidx, SNDRV_MINOR_OSS_DMMIDI);
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break;
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case SNDRV_MINOR_OSS_MIDI1:
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track2 = SNDRV_MINOR_OSS(cidx, SNDRV_MINOR_OSS_DMMIDI1);
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break;
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}
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if (track2 >= 0)
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snd_oss_minors[track2] = NULL;
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snd_oss_minors[minor] = NULL;
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/* call unregister_sound_special() outside sound_oss_mutex;
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* otherwise may deadlock, as it can trigger the release of a card
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*/
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unregister_sound_special(minor);
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if (track2 >= 0)
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unregister_sound_special(track2);
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kfree(mptr);
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return 0;
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}
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EXPORT_SYMBOL(snd_unregister_oss_device);
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/*
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* INFO PART
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*/
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#ifdef CONFIG_SND_PROC_FS
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static const char *snd_oss_device_type_name(int type)
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{
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switch (type) {
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case SNDRV_OSS_DEVICE_TYPE_MIXER:
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return "mixer";
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case SNDRV_OSS_DEVICE_TYPE_SEQUENCER:
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case SNDRV_OSS_DEVICE_TYPE_MUSIC:
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return "sequencer";
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case SNDRV_OSS_DEVICE_TYPE_PCM:
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return "digital audio";
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case SNDRV_OSS_DEVICE_TYPE_MIDI:
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return "raw midi";
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case SNDRV_OSS_DEVICE_TYPE_DMFM:
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return "hardware dependent";
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default:
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return "?";
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}
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}
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static void snd_minor_info_oss_read(struct snd_info_entry *entry,
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struct snd_info_buffer *buffer)
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{
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int minor;
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struct snd_minor *mptr;
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guard(mutex)(&sound_oss_mutex);
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for (minor = 0; minor < SNDRV_OSS_MINORS; ++minor) {
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mptr = snd_oss_minors[minor];
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if (!mptr)
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continue;
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if (mptr->card >= 0)
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snd_iprintf(buffer, "%3i: [%i-%2i]: %s\n", minor,
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mptr->card, mptr->device,
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snd_oss_device_type_name(mptr->type));
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else
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snd_iprintf(buffer, "%3i: : %s\n", minor,
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snd_oss_device_type_name(mptr->type));
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}
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}
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int __init snd_minor_info_oss_init(void)
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{
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struct snd_info_entry *entry;
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entry = snd_info_create_module_entry(THIS_MODULE, "devices", snd_oss_root);
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if (!entry)
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return -ENOMEM;
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entry->c.text.read = snd_minor_info_oss_read;
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return snd_info_register(entry); /* freed in error path */
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}
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#endif /* CONFIG_SND_PROC_FS */
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