linux-kernel - [PATCH v1 2/6] [media] cx23885: use generic power management

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Date:   Mon, 29 Jun 2020 13:06:00 +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>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     Vaibhav Gupta <vaibhavgupta40@...il.com>,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        skhan@...uxfoundation.org
Subject: [PATCH v1 2/6] [media] cx23885: use generic power management

The .suspend() and .resume() callbacks are not defined for this driver.
Still, their power managemgement stucture can be easily upgraded to
gemeric, without affecting its normal behaviour.

Hence, define them NULL and use struct dev_pm_ops type to bind them.

Compile-tested only.

Signed-off-by: Vaibhav Gupta <vaibhavgupta40@...il.com>
---
 drivers/media/pci/cx23885/cx23885-core.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/media/pci/cx23885/cx23885-core.c b/drivers/media/pci/cx23885/cx23885-core.c
index 7e0b0b7cc2a3..da9ee7270dfd 100644
--- a/drivers/media/pci/cx23885/cx23885-core.c
+++ b/drivers/media/pci/cx23885/cx23885-core.c
@@ -2230,14 +2230,18 @@ static const struct pci_device_id cx23885_pci_tbl[] = {
 };
 MODULE_DEVICE_TABLE(pci, cx23885_pci_tbl);
 
+#define cx23885_suspend NULL
+#define cx23885_resume NULL
+
+static SIMPLE_DEV_PM_OPS(cx23885_pm_ops, cx23885_suspend, cx23885_resume);
+
 static struct pci_driver cx23885_pci_driver = {
-	.name     = "cx23885",
-	.id_table = cx23885_pci_tbl,
-	.probe    = cx23885_initdev,
-	.remove   = cx23885_finidev,
+	.name      = "cx23885",
+	.id_table  = cx23885_pci_tbl,
+	.probe     = cx23885_initdev,
+	.remove    = cx23885_finidev,
 	/* TODO */
-	.suspend  = NULL,
-	.resume   = NULL,
+	.driver.pm = &cx23885_pm_ops,
 };
 
 static int __init cx23885_init(void)
-- 
2.27.0