[ALSA] maestro3.c: fix BUG, optimization

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- fix brown-paper-bag locking bug (lock() / return / unlock())
- improve central function snd_m3_update_ptr()
  (avoid expensive integer divisions)
- add cpu_relax() to busy-wait I/O loop as recommended
  (does this require special macro support in ALSA for older kernels??)
- constify several structs
- spelling updates

Signed-off-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Andreas Mohr 2006-03-28 12:56:14 +02:00 • committed by Jaroslav Kysela

parent a1e8d2da03

commit 0b2dcd5d6a

1 changed files with 37 additions and 20 deletions

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sound/pci/maestro3.c

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