From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2807C49EA2 for ; Mon, 21 Jun 2021 16:50:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8619D6108E for ; Mon, 21 Jun 2021 16:50:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233224AbhFUQwa (ORCPT ); Mon, 21 Jun 2021 12:52:30 -0400 Received: from mail.kernel.org ([198.145.29.99]:37672 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232761AbhFUQsB (ORCPT ); Mon, 21 Jun 2021 12:48:01 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 6A2C361458; Mon, 21 Jun 2021 16:34:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1624293240; bh=AlgjhKd+Dnlkxs65AqMCoedbfkv/5rXTQeyFulhIvSw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=P+pogUOLIdNiBS+F1wNW44mxzBDl6E76NU0QoajVctDIzYs0zNBSnW1DkYhogzxaq bm/GMCqPRj+Vq3OVNn1907COhg5Rk7GeywY44hMreHre2f248mko9y6zwGrBsaHCeU yLdHcRZ2MU5Au6Y7/pF+zwXZY7a+gkE0ArZxWrTk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jongho Park , Bumyong Lee , Chanho Park , Vinod Koul Subject: [PATCH 5.12 150/178] dmaengine: pl330: fix wrong usage of spinlock flags in dma_cyclc Date: Mon, 21 Jun 2021 18:16:04 +0200 Message-Id: <20210621154927.870951565@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210621154921.212599475@linuxfoundation.org> References: <20210621154921.212599475@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Bumyong Lee commit 4ad5dd2d7876d79507a20f026507d1a93b8fff10 upstream. flags varible which is the input parameter of pl330_prep_dma_cyclic() should not be used by spinlock_irq[save/restore] function. Signed-off-by: Jongho Park Signed-off-by: Bumyong Lee Signed-off-by: Chanho Park Link: https://lore.kernel.org/r/20210507063647.111209-1-chanho61.park@samsung.com Fixes: f6f2421c0a1c ("dmaengine: pl330: Merge dma_pl330_dmac and pl330_dmac structs") Cc: stable@vger.kernel.org Signed-off-by: Vinod Koul Signed-off-by: Greg Kroah-Hartman --- drivers/dma/pl330.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -2694,13 +2694,15 @@ static struct dma_async_tx_descriptor *p for (i = 0; i < len / period_len; i++) { desc = pl330_get_desc(pch); if (!desc) { + unsigned long iflags; + dev_err(pch->dmac->ddma.dev, "%s:%d Unable to fetch desc\n", __func__, __LINE__); if (!first) return NULL; - spin_lock_irqsave(&pl330->pool_lock, flags); + spin_lock_irqsave(&pl330->pool_lock, iflags); while (!list_empty(&first->node)) { desc = list_entry(first->node.next, @@ -2710,7 +2712,7 @@ static struct dma_async_tx_descriptor *p list_move_tail(&first->node, &pl330->desc_pool); - spin_unlock_irqrestore(&pl330->pool_lock, flags); + spin_unlock_irqrestore(&pl330->pool_lock, iflags); return NULL; }