linux-kernel - [PATCH v1 10/11] vxge: use generic power management

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Date:   Wed,  1 Jul 2020 18:29:37 +0530
From:   Vaibhav Gupta <vaibhavgupta40@...il.com>
To:     Bjorn Helgaas <helgaas@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>, bjorn@...gaas.com,
        Vaibhav Gupta <vaibhav.varodek@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        David Dillow <dave@...dillows.org>,
        Ion Badulescu <ionut@...ula.org>,
        Netanel Belgazal <netanel@...zon.com>,
        Arthur Kiyanovski <akiyano@...zon.com>,
        Guy Tzalik <gtzalik@...zon.com>,
        Saeed Bishara <saeedb@...zon.com>,
        Zorik Machulsky <zorik@...zon.com>,
        Derek Chickles <dchickles@...vell.com>,
        Satanand Burla <sburla@...vell.com>,
        Felix Manlunas <fmanlunas@...vell.com>,
        Denis Kirjanov <kda@...ux-powerpc.org>,
        Ajit Khaparde <ajit.khaparde@...adcom.com>,
        Sriharsha Basavapatna <sriharsha.basavapatna@...adcom.com>,
        Somnath Kotur <somnath.kotur@...adcom.com>,
        Tariq Toukan <tariqt@...lanox.com>,
        Jon Mason <jdmason@...zu.us>
Cc:     Vaibhav Gupta <vaibhavgupta40@...il.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        skhan@...uxfoundation.org
Subject: [PATCH v1 10/11] vxge: use generic power management

With legacy PM, drivers themselves were responsible for managing the
device's power states and takes care of register states.

After upgrading to the generic structure, PCI core will take care of
required tasks and drivers should do only device-specific operations.

Use "struct dev_pm_ops" variable to bind the callbacks.

Compile-tested only.

Signed-off-by: Vaibhav Gupta <vaibhavgupta40@...il.com>
---
 drivers/net/ethernet/neterion/vxge/vxge-main.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/neterion/vxge/vxge-main.c b/drivers/net/ethernet/neterion/vxge/vxge-main.c
index 9b63574b6202..5de85b9e9e35 100644
--- a/drivers/net/ethernet/neterion/vxge/vxge-main.c
+++ b/drivers/net/ethernet/neterion/vxge/vxge-main.c
@@ -3999,12 +3999,11 @@ static void vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
 	}
 }
 
-#ifdef CONFIG_PM
 /**
  * vxge_pm_suspend - vxge power management suspend entry point
  *
  */
-static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
+static int __maybe_unused vxge_pm_suspend(struct device *dev_d)
 {
 	return -ENOSYS;
 }
@@ -4012,13 +4011,11 @@ static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
  * vxge_pm_resume - vxge power management resume entry point
  *
  */
-static int vxge_pm_resume(struct pci_dev *pdev)
+static int __maybe_unused vxge_pm_resume(struct device *dev_d)
 {
 	return -ENOSYS;
 }
 
-#endif
-
 /**
  * vxge_io_error_detected - called when PCI error is detected
  * @pdev: Pointer to PCI device
@@ -4796,15 +4793,14 @@ static const struct pci_error_handlers vxge_err_handler = {
 	.resume = vxge_io_resume,
 };
 
+static SIMPLE_DEV_PM_OPS(vxge_pm_ops, vxge_pm_suspend, vxge_pm_resume);
+
 static struct pci_driver vxge_driver = {
 	.name = VXGE_DRIVER_NAME,
 	.id_table = vxge_id_table,
 	.probe = vxge_probe,
 	.remove = vxge_remove,
-#ifdef CONFIG_PM
-	.suspend = vxge_pm_suspend,
-	.resume = vxge_pm_resume,
-#endif
+	.driver.pm = &vxge_pm_ops,
 	.err_handler = &vxge_err_handler,
 };
 
-- 
2.27.0