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[ALSA] Fix control/status mmap with shared PCM substream

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The flag to avoid 32bit-incompatible mmap for control/status records
should be outside the pcm substream instance since a substream can be
shared among multiple opens.  Now it's flagged in pcm_file list that
is directly assigned to file->private_data.
Also, removed snd_pcm_add_file() and remove_file() functions and
substream.files field that are not really used in the code.

Signed-off-by: Takashi Iwai <[email protected]>
Signed-off-by: Jaroslav Kysela <[email protected]>
This commit is contained in:
Takashi Iwai 2006-07-31 16:51:51 +02:00 • committed by Jaroslav Kysela
commit 548a648b98
3 changed files with 12 additions and 43 deletions
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4
include/sound/pcm.h
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@ -190,7 +190,7 @@ struct snd_pcm_ops {
struct snd_pcm_file {
struct snd_pcm_substream *substream;
struct snd_pcm_file *next;
int no_compat_mmap;
};
struct snd_pcm_hw_rule;
@ -384,7 +384,6 @@ struct snd_pcm_substream {
struct snd_info_entry *proc_prealloc_entry;
#endif
/* misc flags */
unsigned int no_mmap_ctrl: 1;
unsigned int hw_opened: 1;
};
@ -402,7 +401,6 @@ struct snd_pcm_str {
/* -- OSS things -- */
struct snd_pcm_oss_stream oss;
#endif
struct snd_pcm_file *files;
#ifdef CONFIG_SND_VERBOSE_PROCFS
struct snd_info_entry *proc_root;
struct snd_info_entry *proc_info_entry;