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[23.128.96.18]) by mx.google.com with ESMTP id wn19si4751349ejb.524.2020.05.29.03.27.29; Fri, 29 May 2020 03:27:52 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726161AbgE2KXd (ORCPT + 99 others); Fri, 29 May 2020 06:23:33 -0400 Received: from foss.arm.com ([217.140.110.172]:34642 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725795AbgE2KX1 (ORCPT ); Fri, 29 May 2020 06:23:27 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 161EA1045; Fri, 29 May 2020 03:23:26 -0700 (PDT) Received: from e121166-lin.cambridge.arm.com (e121166-lin.cambridge.arm.com [10.1.196.255]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 595753F52E; Fri, 29 May 2020 03:23:24 -0700 (PDT) Date: Fri, 29 May 2020 11:23:17 +0100 From: Lorenzo Pieralisi To: Vidya Sagar , Thierry Reding Cc: Bjorn Helgaas , Dinghao Liu , kjlu@umn.edu, Rob Herring , Bjorn Helgaas , Jonathan Hunter , Andrew Murray , linux-pci@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] PCI: tegra: fix runtime pm imbalance on error Message-ID: <20200529102317.GA12270@e121166-lin.cambridge.arm.com> References: <20200520163739.GA1100601@bjorn-Precision-5520> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 20, 2020 at 11:39:08PM +0530, Vidya Sagar wrote: > Thanks for pushing a patch to fix it. I've been under the wrong assumption > that a failing pm_runtime_get_sync() wouldn't increment the usage counter. > With Thierry's and Bjorn's comments addressed > > Acked-by: Vidya Sagar Thierry, Vidya, are your ACKs applying also to: https://patchwork.kernel.org/patch/11562109/ Dinghao did not carry them over and I could not understand from this thread if your ACKs apply to both tegra and tegra194. Thanks, Lorenzo > On 20-May-20 10:07 PM, Bjorn Helgaas wrote: > > External email: Use caution opening links or attachments > > > > > > On Wed, May 20, 2020 at 11:59:08AM +0200, Thierry Reding wrote: > > > On Wed, May 20, 2020 at 04:52:23PM +0800, Dinghao Liu wrote: > > > > pm_runtime_get_sync() increments the runtime PM usage counter even > > > > it returns an error code. Thus a pairing decrement is needed on > > > > > > s/even it/even when it/ > > > > > > Might also be a good idea to use a different subject prefix because I > > > was almost not going to look at the other patch, taking this to be a > > > replacement for it. > > > > Amen. This would be a good change to start using "PCI: tegra194" or > > something for pcie-tegra194.c. Or will there be tegra195, tegra 196, > > etc added to this driver? > > > > Also, please capitalize the first word and "PM" in the subjects: > > > > PCI: tegra194: Fix runtime PM imbalance on error > > > > Bjorn > >