From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: Subject: Re: [PATCH 1/2] PCI: save and restore device state during bus reset To: Bjorn Helgaas References: <1472770801-30671-1-git-send-email-okaya@codeaurora.org> <20160913164205.GD4138@localhost> Cc: linux-pci@vger.kernel.org, timur@codeaurora.org, cov@codeaurora.org, alex.williamson@redhat.com, vikrams@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org From: Sinan Kaya Message-ID: Date: Tue, 13 Sep 2016 13:22:42 -0400 MIME-Version: 1.0 In-Reply-To: <20160913164205.GD4138@localhost> Content-Type: text/plain; charset=windows-1252 List-ID: Hi Bjorn, On 9/13/2016 12:42 PM, Bjorn Helgaas wrote: > > This comment is no longer correct (you don't leave the devices in > power-on state). Sorry about that, I can fix the comment. > >> + */ >> +void pci_reset_bridge_secondary_bus(struct pci_dev *dev) >> +{ >> + pci_bus_save_and_disable(dev->bus); > > "dev" is a bridge, and dev->bus is the bus on the *primary* side of > the bridge, so I think this saves and disables the bridge itself. > Don't you want dev->subordinate here instead? Yes, I need the subordinate. > >> + pcibios_reset_secondary_bus(dev); >> + pci_bus_restore(dev->bus); >> +} >> +EXPORT_SYMBOL_GPL(pci_reset_bridge_secondary_bus); >> + -- Sinan Kaya Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.