From patchwork Tue Jul 27 10:23:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Lindgren X-Patchwork-Id: 487169 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 68F2DC19F31 for ; Tue, 27 Jul 2021 10:24:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5205F617E4 for ; Tue, 27 Jul 2021 10:24:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236158AbhG0KYq (ORCPT ); Tue, 27 Jul 2021 06:24:46 -0400 Received: from muru.com ([72.249.23.125]:55854 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236292AbhG0KYF (ORCPT ); Tue, 27 Jul 2021 06:24:05 -0400 Received: from hillo.muru.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTP id DA87E8171; Tue, 27 Jul 2021 10:24:21 +0000 (UTC) From: Tony Lindgren To: "David S . Miller" , Herbert Xu , linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org Cc: linux-crypto@vger.kernel.org, Lokesh Vutla , Tero Kristo Subject: [PATCH 6/6] crypto: omap-sham - drop pm_runtime_irqsafe() usage Date: Tue, 27 Jul 2021 13:23:39 +0300 Message-Id: <20210727102339.49141-6-tony@atomide.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210727102339.49141-1-tony@atomide.com> References: <20210727102339.49141-1-tony@atomide.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Commit b0a3d8986a76 ("crypto: omap-sham - Use pm_runtime_irq_safe()") added the use of pm_runtime_irq_safe() as pm_runtime_get_sync() was called from a tasklet. We now use the crypto engine queue instead of a custom queue since commit 33c3d434d91 ("crypto: omap-sham - convert to use crypto engine"). We want to drop the use of pm_runtime_irq_safe() in general as it takes a permanent usage count on the parent device causing issues for power management. Based on testing with CONFIG_DEBUG_ATOMIC_SLEEP=y, modprobe omap-sham, followed by modprobe tcrypt sec=1 mode=423, I have not been able to reproduce the scheduling while atomic issue seen earlier with current kernels and we can just drop the call to pm_runtime_irq_safe(). Cc: Lokesh Vutla Cc: Tero Kristo Signed-off-by: Tony Lindgren --- drivers/crypto/omap-sham.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c --- a/drivers/crypto/omap-sham.c +++ b/drivers/crypto/omap-sham.c @@ -2113,7 +2113,6 @@ static int omap_sham_probe(struct platform_device *pdev) dd->fallback_sz = OMAP_SHA_DMA_THRESHOLD; pm_runtime_enable(dev); - pm_runtime_irq_safe(dev); err = pm_runtime_get_sync(dev); if (err < 0) {