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| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2017-04-12 10:40:19 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2017-04-21 20:30:46 +0800 |
| commit | 69b348449bda0f9588737539cfe135774c9939a7 (patch) | |
| tree | 24ed0c56142ccd2ffafa7ffafc3024550f5544ec /kernel | |
| parent | c46ea13f55b629a26d5dd4a22688a5f88cff0906 (diff) | |
| download | linux-69b348449bda0f9588737539cfe135774c9939a7.tar.gz linux-69b348449bda0f9588737539cfe135774c9939a7.tar.bz2 linux-69b348449bda0f9588737539cfe135774c9939a7.zip | |
padata: get_next is never NULL
Per Dan's static checker warning, the code that returns NULL was removed
in 2010, so this patch updates the comments and fixes the code
assumptions.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/padata.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/kernel/padata.c b/kernel/padata.c index f1aef1639204..ac8f1e524836 100644 --- a/kernel/padata.c +++ b/kernel/padata.c @@ -154,8 +154,6 @@ EXPORT_SYMBOL(padata_do_parallel); * A pointer to the control struct of the next object that needs * serialization, if present in one of the percpu reorder queues. * - * NULL, if all percpu reorder queues are empty. - * * -EINPROGRESS, if the next object that needs serialization will * be parallel processed by another cpu and is not yet present in * the cpu's reorder queue. @@ -182,8 +180,6 @@ static struct padata_priv *padata_get_next(struct parallel_data *pd) cpu = padata_index_to_cpu(pd, next_index); next_queue = per_cpu_ptr(pd->pqueue, cpu); - padata = NULL; - reorder = &next_queue->reorder; spin_lock(&reorder->lock); @@ -235,12 +231,11 @@ static void padata_reorder(struct parallel_data *pd) padata = padata_get_next(pd); /* - * All reorder queues are empty, or the next object that needs - * serialization is parallel processed by another cpu and is - * still on it's way to the cpu's reorder queue, nothing to - * do for now. + * If the next object that needs serialization is parallel + * processed by another cpu and is still on it's way to the + * cpu's reorder queue, nothing to do for now. */ - if (!padata || PTR_ERR(padata) == -EINPROGRESS) + if (PTR_ERR(padata) == -EINPROGRESS) break; /* |