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| author | Takashi Iwai <tiwai@suse.de> | 2014-10-27 14:52:29 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2014-10-27 14:52:29 +0300 |
| commit | d5432503bfb49f3425bad0b850714ffd8b533cfc (patch) | |
| tree | 97926e7eea0b6d8b0e8bf98748dd9c0ef4c718ad /include/linux/seqlock.h | |
| parent | 6a98e34b58919c52e8c8beec991759999af342da (diff) | |
| parent | c0d018bd5b1aabad59dffdec568e189359d93a14 (diff) | |
| download | linux-d5432503bfb49f3425bad0b850714ffd8b533cfc.tar.xz | |
Merge tag 'asoc-v3.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v3.18
A few small driver fixes for v3.18 plus the removal of the s6000 support
since the relevant chip is no longer supported in mainline.
Diffstat (limited to 'include/linux/seqlock.h')
| -rw-r--r-- | include/linux/seqlock.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h index cc359636cfa3..f5df8f687b4d 100644 --- a/include/linux/seqlock.h +++ b/include/linux/seqlock.h @@ -456,4 +456,23 @@ read_sequnlock_excl_irqrestore(seqlock_t *sl, unsigned long flags) spin_unlock_irqrestore(&sl->lock, flags); } +static inline unsigned long +read_seqbegin_or_lock_irqsave(seqlock_t *lock, int *seq) +{ + unsigned long flags = 0; + + if (!(*seq & 1)) /* Even */ + *seq = read_seqbegin(lock); + else /* Odd */ + read_seqlock_excl_irqsave(lock, flags); + + return flags; +} + +static inline void +done_seqretry_irqrestore(seqlock_t *lock, int seq, unsigned long flags) +{ + if (seq & 1) + read_sequnlock_excl_irqrestore(lock, flags); +} #endif /* __LINUX_SEQLOCK_H */ |