From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yijing Wang Subject: [PATCH v1 01/21] PCI/MSI: Clean up struct msi_chip argument Date: Fri, 5 Sep 2014 18:09:46 +0800 Message-ID: <1409911806-10519-2-git-send-email-wangyijing__18300.5663137466$1409910621$gmane$org@huawei.com> References: <1409911806-10519-1-git-send-email-wangyijing@huawei.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1XPq8v-0005jz-DF for xen-devel@lists.xenproject.org; Fri, 05 Sep 2014 09:49:21 +0000 In-Reply-To: <1409911806-10519-1-git-send-email-wangyijing@huawei.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Bjorn Helgaas Cc: linux-mips@linux-mips.org, linux-ia64@vger.kernel.org, linux-pci@vger.kernel.org, Bharat.Bhushan@freescale.com, Yijing Wang , Thierry Reding , sparclinux@vger.kernel.org, linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, Russell King , Joerg Roedel , x86@kernel.org, Sebastian Ott , Benjamin Herrenschmidt , xen-devel@lists.xenproject.org, arnab.basu@freescale.com, Arnd Bergmann , Chris Metcalf , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Thomas Petazzoni , Xinwei Hu , Tony Luck , Ralf Baechle , iommu@lists.linux-foundation.org, Wuyun List-Id: xen-devel@lists.xenproject.org Msi_chip functions setup_irq/teardown_irq rarely use msi_chip argument. We can look up msi_chip pointer by the device pointer or irq number, so clean up msi_chip argument. Signed-off-by: Yijing Wang CC: Thierry Reding CC: Thomas Petazzoni --- drivers/irqchip/irq-armada-370-xp.c | 12 +++++------- drivers/pci/host/pci-tegra.c | 8 +++++--- drivers/pci/host/pcie-designware.c | 4 ++-- drivers/pci/host/pcie-rcar.c | 8 +++++--- drivers/pci/msi.c | 4 ++-- include/linux/msi.h | 5 ++--- 6 files changed, 21 insertions(+), 20 deletions(-) diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c index 574aba0..658990c 100644 --- a/drivers/irqchip/irq-armada-370-xp.c +++ b/drivers/irqchip/irq-armada-370-xp.c @@ -129,9 +129,8 @@ static void armada_370_xp_free_msi(int hwirq) mutex_unlock(&msi_used_lock); } -static int armada_370_xp_setup_msi_irq(struct msi_chip *chip, - struct pci_dev *pdev, - struct msi_desc *desc) +static int armada_370_xp_setup_msi_irq(struct pci_dev *pdev, + struct msi_desc *desc) { struct msi_msg msg; int virq, hwirq; @@ -156,8 +155,7 @@ static int armada_370_xp_setup_msi_irq(struct msi_chip *chip, return 0; } -static void armada_370_xp_teardown_msi_irq(struct msi_chip *chip, - unsigned int irq) +static void armada_370_xp_teardown_msi_irq(unsigned int irq) { struct irq_data *d = irq_get_irq_data(irq); unsigned long hwirq = d->hwirq; @@ -166,8 +164,8 @@ static void armada_370_xp_teardown_msi_irq(struct msi_chip *chip, armada_370_xp_free_msi(hwirq); } -static int armada_370_xp_check_msi_device(struct msi_chip *chip, struct pci_dev *dev, - int nvec, int type) +static int armada_370_xp_check_msi_device(struct pci_dev *dev, + int nvec, int type) { /* We support MSI, but not MSI-X */ if (type == PCI_CAP_ID_MSI) diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c index 0fb0fdb..edd4040 100644 --- a/drivers/pci/host/pci-tegra.c +++ b/drivers/pci/host/pci-tegra.c @@ -1157,9 +1157,10 @@ static irqreturn_t tegra_pcie_msi_irq(int irq, void *data) return processed > 0 ? IRQ_HANDLED : IRQ_NONE; } -static int tegra_msi_setup_irq(struct msi_chip *chip, struct pci_dev *pdev, +static int tegra_msi_setup_irq(struct pci_dev *pdev, struct msi_desc *desc) { + struct msi_chip *chip = pdev->bus->msi; struct tegra_msi *msi = to_tegra_msi(chip); struct msi_msg msg; unsigned int irq; @@ -1185,10 +1186,11 @@ static int tegra_msi_setup_irq(struct msi_chip *chip, struct pci_dev *pdev, return 0; } -static void tegra_msi_teardown_irq(struct msi_chip *chip, unsigned int irq) +static void tegra_msi_teardown_irq(unsigned int irq) { - struct tegra_msi *msi = to_tegra_msi(chip); struct irq_data *d = irq_get_irq_data(irq); + struct msi_chip *chip = irq_get_chip_data(irq); + struct tegra_msi *msi = to_tegra_msi(chip); tegra_msi_free(msi, d->hwirq); } diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c index 52bd3a1..2204456 100644 --- a/drivers/pci/host/pcie-designware.c +++ b/drivers/pci/host/pcie-designware.c @@ -342,7 +342,7 @@ static void clear_irq(unsigned int irq) msi->msi_attrib.multiple = 0; } -static int dw_msi_setup_irq(struct msi_chip *chip, struct pci_dev *pdev, +static int dw_msi_setup_irq(struct pci_dev *pdev, struct msi_desc *desc) { int irq, pos, msgvec; @@ -384,7 +384,7 @@ static int dw_msi_setup_irq(struct msi_chip *chip, struct pci_dev *pdev, return 0; } -static void dw_msi_teardown_irq(struct msi_chip *chip, unsigned int irq) +static void dw_msi_teardown_irq(unsigned int irq) { clear_irq(irq); } diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/host/pcie-rcar.c index 4884ee5..647bc9f 100644 --- a/drivers/pci/host/pcie-rcar.c +++ b/drivers/pci/host/pcie-rcar.c @@ -615,9 +615,10 @@ static irqreturn_t rcar_pcie_msi_irq(int irq, void *data) return IRQ_HANDLED; } -static int rcar_msi_setup_irq(struct msi_chip *chip, struct pci_dev *pdev, +static int rcar_msi_setup_irq(struct pci_dev *pdev, struct msi_desc *desc) { + struct msi_chip *chip = pdev->bus->msi; struct rcar_msi *msi = to_rcar_msi(chip); struct rcar_pcie *pcie = container_of(chip, struct rcar_pcie, msi.chip); struct msi_msg msg; @@ -645,10 +646,11 @@ static int rcar_msi_setup_irq(struct msi_chip *chip, struct pci_dev *pdev, return 0; } -static void rcar_msi_teardown_irq(struct msi_chip *chip, unsigned int irq) +static void rcar_msi_teardown_irq(unsigned int irq) { - struct rcar_msi *msi = to_rcar_msi(chip); struct irq_data *d = irq_get_irq_data(irq); + struct msi_chip *chip = irq_get_chip_data(irq); + struct rcar_msi *msi = to_rcar_msi(chip); rcar_msi_free(msi, d->hwirq); } diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 8fc9587..f6cb317 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -37,7 +37,7 @@ int __weak arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc) if (!chip || !chip->setup_irq) return -EINVAL; - err = chip->setup_irq(chip, dev, desc); + err = chip->setup_irq(dev, desc); if (err < 0) return err; @@ -53,7 +53,7 @@ void __weak arch_teardown_msi_irq(unsigned int irq) if (!chip || !chip->teardown_irq) return; - chip->teardown_irq(chip, irq); + chip->teardown_irq(irq); } int __weak arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) diff --git a/include/linux/msi.h b/include/linux/msi.h index c3c70a6..762fe61 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -71,9 +71,8 @@ struct msi_chip { struct device_node *of_node; struct list_head list; - int (*setup_irq)(struct msi_chip *chip, struct pci_dev *dev, - struct msi_desc *desc); - void (*teardown_irq)(struct msi_chip *chip, unsigned int irq); + int (*setup_irq)(struct pci_dev *dev, struct msi_desc *desc); + void (*teardown_irq)(unsigned int irq); }; #endif /* LINUX_MSI_H */ -- 1.7.1