97752aa71c
There are a lot of different structures that need to have a "frozen" abi for the next 5+ years. Add padding to a lot of them in order to be able to handle any future changes that might be needed due to LTS and security fixes that might come up. It's a best guess, based on what has happened in the past from the 5.10.0..5.10.110 release (1 1/2 years). Yes, past changes do not mean that future changes will also be needed in the same area, but that is a hint that those areas are both well maintained and looked after, and there have been previous problems found in them. Also the list of structures that are being required based on OEM usage in the android/ symbol lists were consulted as that's a larger list than what has been changed in the past. Hopefully we caught everything we need to worry about, only time will tell... Bug: 151154716 Change-Id: I880bbcda0628a7459988eeb49d18655522697664 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef __SOUND_HWDEP_H
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#define __SOUND_HWDEP_H
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/*
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* Hardware dependent layer
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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*/
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#include <sound/asound.h>
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#include <linux/poll.h>
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#include <linux/android_kabi.h>
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struct snd_hwdep;
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/* hwdep file ops; all ops can be NULL */
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struct snd_hwdep_ops {
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long long (*llseek)(struct snd_hwdep *hw, struct file *file,
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long long offset, int orig);
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long (*read)(struct snd_hwdep *hw, char __user *buf,
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long count, loff_t *offset);
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long (*write)(struct snd_hwdep *hw, const char __user *buf,
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long count, loff_t *offset);
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int (*open)(struct snd_hwdep *hw, struct file * file);
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int (*release)(struct snd_hwdep *hw, struct file * file);
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__poll_t (*poll)(struct snd_hwdep *hw, struct file *file,
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poll_table *wait);
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int (*ioctl)(struct snd_hwdep *hw, struct file *file,
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unsigned int cmd, unsigned long arg);
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int (*ioctl_compat)(struct snd_hwdep *hw, struct file *file,
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unsigned int cmd, unsigned long arg);
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int (*mmap)(struct snd_hwdep *hw, struct file *file,
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struct vm_area_struct *vma);
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int (*dsp_status)(struct snd_hwdep *hw,
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struct snd_hwdep_dsp_status *status);
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int (*dsp_load)(struct snd_hwdep *hw,
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struct snd_hwdep_dsp_image *image);
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ANDROID_KABI_RESERVE(1);
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};
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struct snd_hwdep {
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struct snd_card *card;
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struct list_head list;
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int device;
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char id[32];
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char name[80];
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int iface;
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#ifdef CONFIG_SND_OSSEMUL
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int oss_type;
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int ossreg;
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#endif
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struct snd_hwdep_ops ops;
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wait_queue_head_t open_wait;
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void *private_data;
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void (*private_free) (struct snd_hwdep *hwdep);
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struct device dev;
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struct mutex open_mutex;
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int used; /* reference counter */
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unsigned int dsp_loaded; /* bit fields of loaded dsp indices */
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unsigned int exclusive:1; /* exclusive access mode */
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ANDROID_KABI_RESERVE(1);
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};
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extern int snd_hwdep_new(struct snd_card *card, char *id, int device,
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struct snd_hwdep **rhwdep);
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#endif /* __SOUND_HWDEP_H */
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