From 90dc763fef4c869e60b2a7ad92e1a7dab68575ea Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Sun, 11 Jul 2010 12:16:36 +0200 Subject: sound: push BKL into open functions This moves the lock_kernel() call from soundcore_open to the individual OSS device drivers, where we can deal with it one driver at a time if needed, or just kill off the drivers. All core components in ALSA already provide adequate locking in their open()-functions and do not require the big kernel lock, so there is no need to add the BKL there. Signed-off-by: Arnd Bergmann Signed-off-by: Takashi Iwai --- sound/oss/sh_dac_audio.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'sound/oss/sh_dac_audio.c') diff --git a/sound/oss/sh_dac_audio.c b/sound/oss/sh_dac_audio.c index 4153752507e..8f0be4053a5 100644 --- a/sound/oss/sh_dac_audio.c +++ b/sound/oss/sh_dac_audio.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -216,13 +217,17 @@ static int dac_audio_open(struct inode *inode, struct file *file) { if (file->f_mode & FMODE_READ) return -ENODEV; - if (in_use) + + lock_kernel(); + if (in_use) { + unlock_kernel(); return -EBUSY; + } in_use = 1; dac_audio_start(); - + unlock_kernel(); return 0; } -- cgit v1.2.3-70-g09d2