diff options
| author | Takashi Iwai <tiwai@suse.de> | 2015-11-27 15:40:20 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-11-27 15:40:20 +0300 |
| commit | 06a691e64b11323a735db3c3bd909d3c0712698f (patch) | |
| tree | e60b5a230fc2ea6e0f514d878d322a1f8e101c57 /include/linux/fence.h | |
| parent | 0c25ad80408e95e0a4fbaf0056950206e95f726f (diff) | |
| parent | 923f1cbf2e45f6292a01de959031a8efeabede78 (diff) | |
| download | linux-06a691e64b11323a735db3c3bd909d3c0712698f.tar.xz | |
Merge tag 'asoc-fix-v4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v4.4
Quite a large batch of fixes have come in since the merge window, mainly
driver specific ones but there's a couple of core ones:
- A fix for DAPM resume on active streams to ensure everything ends up
cleanly in the right state.
- Reset the DAPM cache when freeing widgets to fix a crash on driver
remove and reload.
The PM functions for nau8825 are new code which fix crashes on resume.
Diffstat (limited to 'include/linux/fence.h')
| -rw-r--r-- | include/linux/fence.h | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/include/linux/fence.h b/include/linux/fence.h index 39efee130d2b..bb522011383b 100644 --- a/include/linux/fence.h +++ b/include/linux/fence.h @@ -280,6 +280,22 @@ fence_is_signaled(struct fence *fence) } /** + * fence_is_later - return if f1 is chronologically later than f2 + * @f1: [in] the first fence from the same context + * @f2: [in] the second fence from the same context + * + * Returns true if f1 is chronologically later than f2. Both fences must be + * from the same context, since a seqno is not re-used across contexts. + */ +static inline bool fence_is_later(struct fence *f1, struct fence *f2) +{ + if (WARN_ON(f1->context != f2->context)) + return false; + + return f1->seqno - f2->seqno < INT_MAX; +} + +/** * fence_later - return the chronologically later fence * @f1: [in] the first fence from the same context * @f2: [in] the second fence from the same context @@ -298,14 +314,15 @@ static inline struct fence *fence_later(struct fence *f1, struct fence *f2) * set if enable_signaling wasn't called, and enabling that here is * overkill. */ - if (f2->seqno - f1->seqno <= INT_MAX) - return fence_is_signaled(f2) ? NULL : f2; - else + if (fence_is_later(f1, f2)) return fence_is_signaled(f1) ? NULL : f1; + else + return fence_is_signaled(f2) ? NULL : f2; } signed long fence_wait_timeout(struct fence *, bool intr, signed long timeout); - +signed long fence_wait_any_timeout(struct fence **fences, uint32_t count, + bool intr, signed long timeout); /** * fence_wait - sleep until the fence gets signaled |