From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031633AbeEZJjS (ORCPT ); Sat, 26 May 2018 05:39:18 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:8155 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1031487AbeEZJjM (ORCPT ); Sat, 26 May 2018 05:39:12 -0400 From: Wei Yongjun To: "Bryant G. Ly" , Steven Royer , Arnd Bergmann , "Greg Kroah-Hartman" CC: Wei Yongjun , , Subject: [PATCH -next] misc: ibmvmc: Use GFP_ATOMIC under spin lock Date: Sat, 26 May 2018 09:45:59 +0000 Message-ID: <1527327959-83701-1-git-send-email-weiyongjun1@huawei.com> X-Mailer: git-send-email 1.8.3.1 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit MIME-Version: 1.0 X-Originating-IP: [10.175.113.25] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The function alloc_dma_buffer() is called from ibmvmc_add_buffer(), in which a spin lock be held here, so we should use GFP_ATOMIC when a lock is held. Fixes: 0eca353e7ae7 ("misc: IBM Virtual Management Channel Driver (VMC)") Signed-off-by: Wei Yongjun --- drivers/misc/ibmvmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/misc/ibmvmc.c b/drivers/misc/ibmvmc.c index fb83d13..8f82bb9 100644 --- a/drivers/misc/ibmvmc.c +++ b/drivers/misc/ibmvmc.c @@ -273,7 +273,7 @@ static void *alloc_dma_buffer(struct vio_dev *vdev, size_t size, dma_addr_t *dma_handle) { /* allocate memory */ - void *buffer = kzalloc(size, GFP_KERNEL); + void *buffer = kzalloc(size, GFP_ATOMIC); if (!buffer) { *dma_handle = 0;