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| author | Takashi Iwai <tiwai@suse.de> | 2019-03-28 15:55:08 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2019-04-09 17:22:46 +0200 |
| commit | 4b24b960b10b6a4e30beba3ce097fa867b4a085f (patch) | |
| tree | 5125bbf3b611a39fb50413c41cdd7c310cd85d36 /sound | |
| parent | ALSA: seq: Use kvmalloc() for cell pools (diff) | |
| download | linux-4b24b960b10b6a4e30beba3ce097fa867b4a085f.tar.xz linux-4b24b960b10b6a4e30beba3ce097fa867b4a085f.zip | |
ALSA: seq: Align temporary re-locking with irqsave version
In a few places in sequencer core, we temporarily unlock / re-lock the
pool spin lock while waiting for the allocation in the blocking mode.
There spin_unlock_irq() / spin_lock_irq() pairs are called while
initially spin_lock_irqsave() is used (and spin_lock_irqrestore() at
the end of the function again). This is likely OK for now, but it's a
bit confusing and error-prone.
This patch replaces these temporary relocking lines with the irqsave
variant to make the lock/unlock sequence more consistently.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/core/seq/seq_fifo.c | 4 | ||||
| -rw-r--r-- | sound/core/seq/seq_memory.c | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/sound/core/seq/seq_fifo.c b/sound/core/seq/seq_fifo.c index 72c0302a55d2..613ae10d33b8 100644 --- a/sound/core/seq/seq_fifo.c +++ b/sound/core/seq/seq_fifo.c @@ -195,9 +195,9 @@ int snd_seq_fifo_cell_out(struct snd_seq_fifo *f, } set_current_state(TASK_INTERRUPTIBLE); add_wait_queue(&f->input_sleep, &wait); - spin_unlock_irq(&f->lock); + spin_unlock_irqrestore(&f->lock, flags); schedule(); - spin_lock_irq(&f->lock); + spin_lock_irqsave(&f->lock, flags); remove_wait_queue(&f->input_sleep, &wait); if (signal_pending(current)) { spin_unlock_irqrestore(&f->lock, flags); diff --git a/sound/core/seq/seq_memory.c b/sound/core/seq/seq_memory.c index 6ea4d8a5a71e..ae0b8971f6ce 100644 --- a/sound/core/seq/seq_memory.c +++ b/sound/core/seq/seq_memory.c @@ -244,13 +244,13 @@ static int snd_seq_cell_alloc(struct snd_seq_pool *pool, set_current_state(TASK_INTERRUPTIBLE); add_wait_queue(&pool->output_sleep, &wait); - spin_unlock_irq(&pool->lock); + spin_unlock_irqrestore(&pool->lock, flags); if (mutexp) mutex_unlock(mutexp); schedule(); if (mutexp) mutex_lock(mutexp); - spin_lock_irq(&pool->lock); + spin_lock_irqsave(&pool->lock, flags); remove_wait_queue(&pool->output_sleep, &wait); /* interrupted? */ if (signal_pending(current)) { |