-----Original Message-----
From: Vaibhav Gupta [mailto:vaibhavgupt...@gmail.com]
Sent: Thursday, October 1, 2020 7:25 AM
To: Bjorn Helgaas <helg...@kernel.org>; Bjorn Helgaas <bhelg...@google.com>;
Bjorn Helgaas <bj...@helgaas.com>; Vaibhav Gupta <vaibhav.varo...@gmail.com>;
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Cc: Vaibhav Gupta <vaibhavgupt...@gmail.com>; Shuah Khan
<sk...@linuxfoundation.org>; linux-kernel@vger.kernel.org;
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Subject: [PATCH v3 19/28] scsi: hpsa: use generic power management
EXTERNAL EMAIL: Do not click links or open attachments unless you know the
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Drivers should do only device-specific jobs. But in general, drivers using
legacy PCI PM framework for .suspend()/.resume() have to manage many PCI
PM-related tasks themselves which can be done by PCI Core itself. This brings
extra load on the driver and it directly calls PCI helper functions to handle
them.
Switch to the new generic framework by updating function signatures and define
a "struct dev_pm_ops" variable to bind PM callbacks. Also, remove unnecessary
calls to the PCI Helper functions along with the legacy .suspend & .resume
bindings.
Signed-off-by: Vaibhav Gupta <vaibhavgupt...@gmail.com>
Acked-by: Don Brace <don.br...@microchip.com>
---
drivers/scsi/hpsa.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index
81d0414e2117..70bdd6fe91ee 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -9070,25 +9070,27 @@ static void hpsa_remove_one(struct pci_dev *pdev)
hpda_free_ctlr_info(h); /* init_one 1 */
}
-static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
- __attribute__((unused)) pm_message_t state)
+static int __maybe_unused hpsa_suspend(
+ __attribute__((unused)) struct device *dev)
{
return -ENOSYS;
}
-static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
+static int __maybe_unused hpsa_resume
+ (__attribute__((unused)) struct device *dev)
{
return -ENOSYS;
}
+static SIMPLE_DEV_PM_OPS(hpsa_pm_ops, hpsa_suspend, hpsa_resume);
+
static struct pci_driver hpsa_pci_driver = {
.name = HPSA,
.probe = hpsa_init_one,
.remove = hpsa_remove_one,
.id_table = hpsa_pci_device_id, /* id_table */
.shutdown = hpsa_shutdown,
- .suspend = hpsa_suspend,
- .resume = hpsa_resume,
+ .driver.pm = &hpsa_pm_ops,
};
/* Fill in bucket_map[], given nsgs (the max number of
--
2.28.0
