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author | David S. Miller <davem@davemloft.net> | 2019-08-27 14:23:31 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2019-08-27 14:23:31 -0700 |
commit | 68aaf4459556b1f9370c259fd486aecad2257552 (patch) | |
tree | 99d92536a3263634969be6b70a96facea85a0df1 /sound/core/seq/seq_fifo.c | |
parent | nfp: add AMDA0058 boards to firmware list (diff) | |
parent | Merge tag 'nfs-for-5.3-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs (diff) | |
download | linux-dev-68aaf4459556b1f9370c259fd486aecad2257552.tar.xz linux-dev-68aaf4459556b1f9370c259fd486aecad2257552.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Minor conflict in r8169, bug fix had two versions in net
and net-next, take the net-next hunks.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'sound/core/seq/seq_fifo.c')
-rw-r--r-- | sound/core/seq/seq_fifo.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/sound/core/seq/seq_fifo.c b/sound/core/seq/seq_fifo.c index ea69261f269a..eaaa8b5830bb 100644 --- a/sound/core/seq/seq_fifo.c +++ b/sound/core/seq/seq_fifo.c @@ -263,3 +263,20 @@ int snd_seq_fifo_resize(struct snd_seq_fifo *f, int poolsize) return 0; } + +/* get the number of unused cells safely */ +int snd_seq_fifo_unused_cells(struct snd_seq_fifo *f) +{ + unsigned long flags; + int cells; + + if (!f) + return 0; + + snd_use_lock_use(&f->use_lock); + spin_lock_irqsave(&f->lock, flags); + cells = snd_seq_unused_cells(f->pool); + spin_unlock_irqrestore(&f->lock, flags); + snd_use_lock_free(&f->use_lock); + return cells; +} |