In case anyone finds this bug report when googling for this error: the
problem is that the hpsa driver (which drives many HP RAID controllers)
just doesn't support suspend.
The code (even in Linux 5.0.13) reads:
```
static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
__attribute__((unused)) pm_message_t state)
{
return -ENOSYS;
}
static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
{
return -ENOSYS;
}
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,
};
```
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https://bugs.launchpad.net/bugs/1579410
Title:
Cannot suspend HP ProLiant SE316M1R2
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