From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mika Westerberg Subject: [PATCH 5/7] ahci: Convert driver to use modern PM hooks Date: Thu, 18 Feb 2016 10:54:15 +0200 Message-ID: <1455785657-22924-6-git-send-email-mika.westerberg@linux.intel.com> References: <1455785657-22924-1-git-send-email-mika.westerberg@linux.intel.com> Return-path: In-Reply-To: <1455785657-22924-1-git-send-email-mika.westerberg@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-block@vger.kernel.org Cc: Jens Axboe , Tejun Heo , James Bottomley , "Martin K . Petersen" , Mika Westerberg , linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org List-Id: linux-ide@vger.kernel.org In order to add support for runtime PM to the ahci driver we first need to convert the driver to use modern non-legacy system suspend hooks. There should be no functional changes. Signed-off-by: Mika Westerberg --- drivers/ata/ahci.c | 49 ++++++++++++++++++++++--------------------------- 1 file changed, 22 insertions(+), 27 deletions(-) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 546a3692774f..44f9d1c09bbe 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -93,9 +93,9 @@ static void ahci_mcp89_apple_enable(struct pci_dev *pdev); static bool is_mcp89_apple(struct pci_dev *pdev); static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class, unsigned long deadline); -#ifdef CONFIG_PM -static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); -static int ahci_pci_device_resume(struct pci_dev *pdev); +#ifdef CONFIG_PM_SLEEP +static int ahci_pci_device_suspend(struct device *dev); +static int ahci_pci_device_resume(struct device *dev); #endif static struct scsi_host_template ahci_sht = { @@ -557,16 +557,16 @@ static const struct pci_device_id ahci_pci_tbl[] = { { } /* terminate list */ }; +static const struct dev_pm_ops ahci_pci_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(ahci_pci_device_suspend, ahci_pci_device_resume) +}; static struct pci_driver ahci_pci_driver = { .name = DRV_NAME, .id_table = ahci_pci_tbl, .probe = ahci_init_one, .remove = ata_pci_remove_one, -#ifdef CONFIG_PM - .suspend = ahci_pci_device_suspend, - .resume = ahci_pci_device_resume, -#endif + .driver.pm = &ahci_pci_pm_ops, }; #if defined(CONFIG_PATA_MARVELL) || defined(CONFIG_PATA_MARVELL_MODULE) @@ -794,44 +794,39 @@ static int ahci_avn_hardreset(struct ata_link *link, unsigned int *class, } -#ifdef CONFIG_PM -static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg) +#ifdef CONFIG_PM_SLEEP +static int ahci_pci_device_suspend(struct device *dev) { + struct pci_dev *pdev = to_pci_dev(dev); struct ata_host *host = pci_get_drvdata(pdev); struct ahci_host_priv *hpriv = host->private_data; void __iomem *mmio = hpriv->mmio; u32 ctl; - if (mesg.event & PM_EVENT_SUSPEND && - hpriv->flags & AHCI_HFLAG_NO_SUSPEND) { + if (hpriv->flags & AHCI_HFLAG_NO_SUSPEND) { dev_err(&pdev->dev, "BIOS update required for suspend/resume\n"); return -EIO; } - if (mesg.event & PM_EVENT_SLEEP) { - /* AHCI spec rev1.1 section 8.3.3: - * Software must disable interrupts prior to requesting a - * transition of the HBA to D3 state. - */ - ctl = readl(mmio + HOST_CTL); - ctl &= ~HOST_IRQ_EN; - writel(ctl, mmio + HOST_CTL); - readl(mmio + HOST_CTL); /* flush */ - } + /* AHCI spec rev1.1 section 8.3.3: + * Software must disable interrupts prior to requesting a + * transition of the HBA to D3 state. + */ + ctl = readl(mmio + HOST_CTL); + ctl &= ~HOST_IRQ_EN; + writel(ctl, mmio + HOST_CTL); + readl(mmio + HOST_CTL); /* flush */ - return ata_pci_device_suspend(pdev, mesg); + return ata_host_suspend(host, PMSG_SUSPEND); } -static int ahci_pci_device_resume(struct pci_dev *pdev) +static int ahci_pci_device_resume(struct device *dev) { + struct pci_dev *pdev = to_pci_dev(dev); struct ata_host *host = pci_get_drvdata(pdev); int rc; - rc = ata_pci_device_do_resume(pdev); - if (rc) - return rc; - /* Apple BIOS helpfully mangles the registers on resume */ if (is_mcp89_apple(pdev)) ahci_mcp89_apple_enable(pdev); -- 2.7.0