Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753549AbdDLIkh (ORCPT ); Wed, 12 Apr 2017 04:40:37 -0400 Received: from frisell.zx2c4.com ([192.95.5.64]:42779 "EHLO frisell.zx2c4.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753394AbdDLIke (ORCPT ); Wed, 12 Apr 2017 04:40:34 -0400 From: "Jason A. Donenfeld" To: steffen.klassert@secunet.com, linux-crypto@vger.kernel.org, dan.carpenter@oracle.com, linux-kernel@vger.kernel.org Cc: "Jason A. Donenfeld" Subject: [PATCH] padata: get_next is never NULL Date: Wed, 12 Apr 2017 10:40:19 +0200 Message-Id: <20170412084019.16190-1-Jason@zx2c4.com> X-Mailer: git-send-email 2.12.2 In-Reply-To: <20170411091601.GA24844@mwanda> References: <20170411091601.GA24844@mwanda> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1783 Lines: 51 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 Reported-by: Dan Carpenter --- kernel/padata.c | 13 ++++--------- 1 file 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; /* -- 2.12.2