From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yijing Wang Date: Thu, 23 Oct 2014 06:39:35 +0000 Subject: Re: [PATCH v3 09/27] arm/PCI: Clean unused pcibios_add_bus() and pcibios_remove_bus() Message-Id: <5448A2A7.9090407@huawei.com> List-Id: References: <1413342435-7876-1-git-send-email-wangyijing@huawei.com> <1413342435-7876-10-git-send-email-wangyijing@huawei.com> <20141023053858.GD11770@google.com> In-Reply-To: <20141023053858.GD11770@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Bjorn Helgaas Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Xinwei Hu , Wuyun , linux-arm-kernel@lists.infradead.org, Russell King , linux-arch@vger.kernel.org, arnab.basu@freescale.com, Bharat.Bhushan@freescale.com, x86@kernel.org, Arnd Bergmann , Thomas Gleixner , Konrad Rzeszutek Wilk , xen-devel@lists.xenproject.org, Joerg Roedel , iommu@lists.linux-foundation.org, linux-mips@linux-mips.org, Benjamin Herrenschmidt , linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, Sebastian Ott , Tony Luck , linux-ia64@vger.kernel.org, "David S. Miller" , sparclinux@vger.kernel.org, Chris Metcalf , Ralf Baechle , Lucas Stach , David Vrabel , Sergei Shtylyov , Michael Ellerman , Thierry Reding , Thomas Petazzoni , Liviu Dudau >> /* >> * Swizzle the device pin each time we cross a bridge. If a platform does >> * not provide a swizzle function, we perform the standard PCI swizzling. >> @@ -478,8 +464,6 @@ static void pcibios_init_hw(struct device *parent, struct hw_pci *hw, >> sys->swizzle = hw->swizzle; >> sys->map_irq = hw->map_irq; >> sys->align_resource = hw->align_resource; >> - sys->add_bus = hw->add_bus; >> - sys->remove_bus = hw->remove_bus; >> INIT_LIST_HEAD(&sys->resources); >> >> if (hw->private_data) > > What do the core changes below have to do with the ARM changes above? > They should be a separate patch unless they can't be separated. Hm, it's not the thing have to do, because the changes below is only used by arm arch, so I put it here together. It's ok to split the core changes out to another one. > >> diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c >> index f11108c..56e54ad 100644 >> --- a/drivers/pci/msi.c >> +++ b/drivers/pci/msi.c >> @@ -32,12 +32,10 @@ int pci_msi_ignore_mask; >> >> int __weak arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc) >> { >> - struct msi_chip *chip = dev->bus->msi; >> + struct msi_chip *chip; >> int err; >> >> - if (!chip) >> - chip = pci_msi_chip(dev->bus); >> - >> + chip = pci_msi_chip(dev->bus); >> if (!chip || !chip->setup_irq) >> return -EINVAL; >> >> @@ -51,10 +49,7 @@ int __weak arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc) >> void __weak arch_teardown_msi_irq(unsigned int irq) >> { >> struct msi_desc *entry = irq_get_msi_desc(irq); >> - struct msi_chip *chip = entry->dev->bus->msi; >> - >> - if (!chip) >> - chip = pci_msi_chip(entry->dev->bus); >> + struct msi_chip *chip = pci_msi_chip(entry->dev->bus); >> >> if (!chip || !chip->teardown_irq) >> return; >> -- >> 1.7.1 >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-pci" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html > > . > -- Thanks! Yijing