linux-kernel - [PATCH v1] scsi: isci: Don't use PCI helper functions

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Message-Id: <20201107100420.149521-1-vaibhavgupta40@gmail.com>
Date:   Sat,  7 Nov 2020 15:34:19 +0530
From:   Vaibhav Gupta <vaibhavgupta40@...il.com>
To:     Artur Paszkiewicz <artur.paszkiewicz@...el.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     Vaibhav Gupta <vaibhavgupta40@...il.com>,
        Intel SCU Linux support <intel-linux-scu@...el.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1] scsi: isci: Don't use PCI helper functions

PCI helper functions such as pci_enable/disable_device(),
pci_save/restore_state(), pci_set_power_state(), etc. were used by the
legacy framework to perform standard operations related to PCI PM.

This driver is using the generic framework and thus calls for those
functions should be dropped as those tasks are now performed by the PCI
core.

Signed-off-by: Vaibhav Gupta <vaibhavgupta40@...il.com>
---
 drivers/scsi/isci/init.c | 18 +-----------------
 1 file changed, 1 insertion(+), 17 deletions(-)

diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c
index 93bc9019667f..c452849e7bb4 100644
--- a/drivers/scsi/isci/init.c
+++ b/drivers/scsi/isci/init.c
@@ -715,10 +715,6 @@ static int isci_suspend(struct device *dev)
 		isci_host_deinit(ihost);
 	}
 
-	pci_save_state(pdev);
-	pci_disable_device(pdev);
-	pci_set_power_state(pdev, PCI_D3hot);
-
 	return 0;
 }
 
@@ -726,19 +722,7 @@ static int isci_resume(struct device *dev)
 {
 	struct pci_dev *pdev = to_pci_dev(dev);
 	struct isci_host *ihost;
-	int rc, i;
-
-	pci_set_power_state(pdev, PCI_D0);
-	pci_restore_state(pdev);
-
-	rc = pcim_enable_device(pdev);
-	if (rc) {
-		dev_err(&pdev->dev,
-			"enabling device failure after resume(%d)\n", rc);
-		return rc;
-	}
-
-	pci_set_master(pdev);
+	int i;
 
 	for_each_isci_host(i, ihost, pdev) {
 		sas_prep_resume_ha(&ihost->sas_ha);
-- 
2.28.0