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author | Alex Shi <alex.shi@linaro.org> | 2018-02-28 12:01:09 +0800 |
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committer | Alex Shi <alex.shi@linaro.org> | 2018-02-28 12:01:09 +0800 |
commit | 6e49b7fa3083c30688b7fff1b37ed891cd1c30af (patch) | |
tree | 3054864f2e58bcd86000567ce99e25753ddc794a /kernel/async.c | |
parent | 2ba51c6d36ee1b43c1f898c6c48ddf3d33e9ab30 (diff) | |
parent | be42cd02846a611af533103a3f4b6a7d8c592f49 (diff) |
Merge remote-tracking branch 'rt-stable/v4.9-rt' into linux-linaro-lsk-v4.9-rtlsk-v4.9-18.03-rt
Diffstat (limited to 'kernel/async.c')
-rw-r--r-- | kernel/async.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/kernel/async.c b/kernel/async.c index d2edd6efec56..d84d4860992e 100644 --- a/kernel/async.c +++ b/kernel/async.c @@ -84,20 +84,24 @@ static atomic_t entry_count; static async_cookie_t lowest_in_progress(struct async_domain *domain) { - struct list_head *pending; + struct async_entry *first = NULL; async_cookie_t ret = ASYNC_COOKIE_MAX; unsigned long flags; spin_lock_irqsave(&async_lock, flags); - if (domain) - pending = &domain->pending; - else - pending = &async_global_pending; + if (domain) { + if (!list_empty(&domain->pending)) + first = list_first_entry(&domain->pending, + struct async_entry, domain_list); + } else { + if (!list_empty(&async_global_pending)) + first = list_first_entry(&async_global_pending, + struct async_entry, global_list); + } - if (!list_empty(pending)) - ret = list_first_entry(pending, struct async_entry, - domain_list)->cookie; + if (first) + ret = first->cookie; spin_unlock_irqrestore(&async_lock, flags); return ret; |