From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [119.145.14.64]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id B1A791A0624 for ; Tue, 16 Sep 2014 12:09:47 +1000 (EST) Message-ID: <54179BD1.3050608@huawei.com> Date: Tue, 16 Sep 2014 10:09:21 +0800 From: Yijing Wang MIME-Version: 1.0 To: Lucas Stach Subject: Re: [PATCH v1 06/21] PCI/MSI: Refactor struct msi_chip to make it become more common References: <1409911806-10519-1-git-send-email-wangyijing@huawei.com> <1409911806-10519-7-git-send-email-wangyijing@huawei.com> <1410792261.3314.9.camel@pengutronix.de> In-Reply-To: <1410792261.3314.9.camel@pengutronix.de> Content-Type: text/plain; charset="UTF-8" Cc: linux-mips@linux-mips.org, linux-ia64@vger.kernel.org, linux-pci@vger.kernel.org, Bharat.Bhushan@freescale.com, sparclinux@vger.kernel.org, linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, Russell King , Joerg Roedel , x86@kernel.org, Sebastian Ott , xen-devel@lists.xenproject.org, arnab.basu@freescale.com, Arnd Bergmann , Konrad Rzeszutek Wilk , Chris Metcalf , Bjorn Helgaas , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Xinwei Hu , Tony Luck , Ralf Baechle , iommu@lists.linux-foundation.org, Wuyun , linuxppc-dev@lists.ozlabs.org, "David S. Miller" List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On 2014/9/15 22:44, Lucas Stach wrote: > Am Freitag, den 05.09.2014, 18:09 +0800 schrieb Yijing Wang: >> Now there are a lot of __weak arch functions in MSI code. >> These functions make MSI driver complex. Thierry Reding Introduced >> a new MSI chip framework to configure MSI/MSI-X irq in ARM. Use >> the new MSI chip framework to refactor all other platform MSI >> arch code to eliminate weak arch MSI functions. This patch add >> .restore_irq() and .setup_irqs() to make it become more common. >> >> Signed-off-by: Yijing Wang > > This change looks good to me: > Reviewed-by: Lucas Stach Thanks! > >> --- >> drivers/pci/msi.c | 15 +++++++++++++++ >> include/linux/msi.h | 3 +++ >> 2 files changed, 18 insertions(+), 0 deletions(-) >> >> diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c >> index 539c11d..d78d637 100644 >> --- a/drivers/pci/msi.c >> +++ b/drivers/pci/msi.c >> @@ -63,6 +63,11 @@ int __weak arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) >> { >> struct msi_desc *entry; >> int ret; >> + struct msi_chip *chip; >> + >> + chip = arch_find_msi_chip(dev); >> + if (chip && chip->setup_irqs) >> + return chip->setup_irqs(dev, nvec, type); >> >> /* >> * If an architecture wants to support multiple MSI, it needs to >> @@ -105,6 +110,11 @@ void default_teardown_msi_irqs(struct pci_dev *dev) >> >> void __weak arch_teardown_msi_irqs(struct pci_dev *dev) >> { >> + struct msi_chip *chip = arch_find_msi_chip(dev); >> + >> + if (chip && chip->teardown_irqs) >> + return chip->teardown_irqs(dev); >> + >> return default_teardown_msi_irqs(dev); >> } >> >> @@ -128,6 +138,11 @@ static void default_restore_msi_irq(struct pci_dev *dev, int irq) >> >> void __weak arch_restore_msi_irqs(struct pci_dev *dev) >> { >> + struct msi_chip *chip = arch_find_msi_chip(dev); >> + >> + if (chip && chip->restore_irqs) >> + return chip->restore_irqs(dev); >> + >> return default_restore_msi_irqs(dev); >> } >> >> diff --git a/include/linux/msi.h b/include/linux/msi.h >> index 5650848..92a51e7 100644 >> --- a/include/linux/msi.h >> +++ b/include/linux/msi.h >> @@ -72,7 +72,10 @@ struct msi_chip { >> struct list_head list; >> >> int (*setup_irq)(struct pci_dev *dev, struct msi_desc *desc); >> + int (*setup_irqs)(struct pci_dev *dev, int nvec, int type); >> void (*teardown_irq)(unsigned int irq); >> + void (*teardown_irqs)(struct pci_dev *dev); >> + void (*restore_irqs)(struct pci_dev *dev); >> }; >> >> #endif /* LINUX_MSI_H */ > -- Thanks! Yijing