Re: [PATCH 21/24] mpi3mr: add support of PM suspend and resume
From: Tomas Henzl <hidden>
Date: 2021-02-22 15:35:23
On 12/22/20 11:11 AM, Kashyap Desai wrote:
quoted hunk ↗ jump to hunk
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Cc: sathya.prakash@broadcom.com --- drivers/scsi/mpi3mr/mpi3mr_os.c | 85 +++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+)diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c index 1708aca1a5cd..ac47eed74705 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_os.c +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c
...
+/**
+ * mpi3mr_resume - PCI power management resume callback
+ * @pdev: PCI device instance
+ *
+ * Restore the power state to D0 and reinitialize the controller
+ * and resume I/O operations to the target devices
+ *
+ * Return: 0 on success, non-zero on failure
+ */
+static int mpi3mr_resume(struct pci_dev *pdev)
+{
+ struct Scsi_Host *shost = pci_get_drvdata(pdev);
+ struct mpi3mr_ioc *mrioc;
+ pci_power_t device_state = pdev->current_state;
+ int r;
+
+ mrioc = shost_priv(shost);
+
+ ioc_info(mrioc, "pdev=0x%p, slot=%s, previous operating state [D%d]\n",
+ pdev, pci_name(pdev), device_state);
+ pci_set_power_state(pdev, PCI_D0);
+ pci_enable_wake(pdev, PCI_D0, 0);
+ pci_restore_state(pdev);
+ mrioc->pdev = pdev;
+ mrioc->cpu_count = num_online_cpus();
+ r = mpi3mr_setup_resources(mrioc);
+ if (r) {
+ ioc_info(mrioc, "%s: Setup resoruces failed[%d]\n",A typo here ^
+ __func__, r); + return r; + }