Orignally proposed by Sam Revitch <sam.revitch@gmail.com>.
Unregister device files at disconnection to avoid the futher accesses.
Also, the dev_unregister callback is removed and replaced with the
combination of disconnect + free.
A new function snd_card_free_when_closed() is introduced, which is
used in USB disconnect callback.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

- Add the linked list to each proc entry to enable a single-shot
  disconnection (unregister)
- Deprecate snd_info_unregister(), use snd_info_free_entry()
- Removed NULL checks of snd_info_free_entry()
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

This patch implements a TLV mechanism to transfer an additional information
like dB scale to the user space. The types might be extended in future.
Acked-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

Accept O_RDWR at opening a PCM OSS device that is read- or write-only,
just for the compatibility with the behavior of older versions.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

sound: Conversions from kmalloc+memset to k(c|z)alloc.
Signed-off-by: NPanagiotis Issaris <takis@issaris.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

Fix a occasional deadlock occuring with snd-rtctimer driver,
added irqsave to the lock in tasklet (ALSA bug#952).
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

Drop the snd_minor structure's name field that was just a helper for
devfs device deregistration.
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

The ops structure has complex locking rules, where not all ops are equal, some
are subordinate on others for some complex sound cards.  This requires for
lockdep checking that each individual reg_mutex is considered in separation
for its locking rules.

Has no effect on non-lockdep kernels.
Signed-off-by: NArjan van de Ven <arjan@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Jaroslav Kysela <perex@suse.cz>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Teach special (recursive) locking code to the lock validator.  Has no effect
on non-lockdep kernels.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NArjan van de Ven <arjan@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Jaroslav Kysela <perex@suse.cz>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NJörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: NAdrian Bunk <bunk@stusta.de>

seq_ports.c::snd_seq_delete_all_ports() uses __list_add() to replace the
whole list entries.  This results in BUG() with recent FC5 kernel due to
a sanity check in __list_add().
The patch fixes this misue of __list_add() by using standard macros
instead (although a bit more code is needed).
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

The dynamic minors code is mature, has been tested, and seems to work
fine.
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

acquired (aquired)
contiguous (contigious)
successful (succesful, succesfull)
surprise (suprise)
whether (weather)
some other misspellings
Signed-off-by: NAndreas Mohr <andi@lisas.de>
Signed-off-by: NAdrian Bunk <bunk@stusta.de>

Removed nested mutexes in the removal routine of port connections.
The port is guaranteed to be offline before calling it, so no mutex
is needed.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Removed a bogus check of mmap_count in snd_pcm_release().
This is no longer true for the shared streams.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Removed zero-initializations of static variables.
A tiny optimization.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Fix the draining of PCM capture stream in the PCM middle layer.
snd_pcm_drain() ignored capture streams, but it should change
the state to SNDRV_PCM_DRAINING.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Fixed rwlock around snd_iprintf() in sound core part.
Replaced with mutex.
Also, make mutex and flags static variables with addition of
snd_card_locked() function (just for sound.c).
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Add a get_port_info callback to the snd_rawmidi_global_ops structure to
allow the USB MIDI driver to supply information flags for the sequencer
ports created by seq_midi.
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>

Add four new information flags SNDRV_SEQ_PORT_TYPE_HARDWARE, _SOFTWARE,
_SYNTHESIZER, _PORT for sequencer ports.  This makes it easier for apps
like Rosegarden to make policy decisions based on the port type.
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>

fix a typo in the info locking code
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>

Fix a compile warning in timer.c due to unused variables.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Move mmap_count to snd_pcm_substream instead of runtime struct
so that multiplly opened substreams via O_APPEND can be handled
correctly.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Added O_APPEND flag support to PCM to enable shared substreams
among multiple processes.  This mechanism is used by dmix and
dsnoop plugins.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Inserted might_sleep() in snd_iprintf() for sanity check.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Don't lock during showing proc read.  snd_iprintf() might sleep.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Remove unneeded read/write_size fields in proc text ops.
snd_info_set_text_ops() is fixed, too.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Make the read/write buffer size of proc text interface variable.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Clean up ugly hacks for sync with alsa-lib code in pcm_lib.c.
Also, optimize snd_pcm_hw_params_choose() with a loop.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Move EXPORT_SYMBOL()s to places adjacent to functions/variables.
Also move OSS-specific hw_params helper functions to pcm_oss.c.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Move EXPORT_SYMBOL()s to places adjacent to functions/variables.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Move EXPORT_SYMBOL()s to places adjacent to functions/variables.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Change snd_seq_midisynth_register_port() in seq_midi.c so that if a new client
is created, the client name string is based on card->shortname not
(port-specific) info->name.
Signed-off-by: NAlan Horstmann <gineera@aspect135.co.uk>
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>

Fixed Oops at rmmod with CONFIG_SND_VERBOSE_PROCFS=n.
Add ifdef to struct fields for optimization and better compile
checks.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This patch makes the XRUN (overrun/underrun) notification code optional.
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

Handle the error returned from snd_pcm_oss_get_formats() correctly
in SNDCTL_DSP_SETFMT ioctl handler of PCM OSS emulation.
Signed-off-by: NSteven Finney <sfinney@healthhero.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Modules: PCM Midlevel

This patch makes the needlessly global snd_pcm_format_name() static.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Modules: PCM Midlevel,ALSA<-OSS emulation

Fix Oops of PCM OSS emulation occuring when multiple playback is used.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Modules: ALSA<-OSS emulation

Fix Oops due to a typo in snd_pcm_oss.c.
Signed-off-by: NOGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>