diff options
| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2020-03-18 20:55:24 +0100 |
|---|---|---|
| committer |   Vasily Gorbik <gor@linux.ibm.com> | 2020-03-23 13:41:55 +0100 |
| commit | 394216275c7d503d966317da9a01ad6626a6091d (patch) | |
| tree | 7babb0a4ee063a29e9f4cc7c1fd8bec20caabeb5 /arch/s390/pci/pci.c | |
| parent | s390/cpuinfo: do not skip info for CPUs without MHz feature (diff) | |
| download | linux-dev-394216275c7d503d966317da9a01ad6626a6091d.tar.xz linux-dev-394216275c7d503d966317da9a01ad6626a6091d.zip | |
s390: remove broken hibernate / power management support
Hibernation is known to be broken for many years on s390. Given that
there aren't any real use cases, remove the code instead of spending
time to fix and maintain it.
Without hibernate support it doesn't make too much sense to keep power
management support; therefore remove it completely.
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/pci/pci.c')
| -rw-r--r-- | arch/s390/pci/pci.c | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index bc61ea18e88d..d4eaba24e300 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -607,49 +607,6 @@ void pcibios_disable_device(struct pci_dev *pdev) zpci_debug_exit_device(zdev); } -#ifdef CONFIG_HIBERNATE_CALLBACKS -static int zpci_restore(struct device *dev) -{ - struct pci_dev *pdev = to_pci_dev(dev); - struct zpci_dev *zdev = to_zpci(pdev); - int ret = 0; - - if (zdev->state != ZPCI_FN_STATE_ONLINE) - goto out; - - ret = clp_enable_fh(zdev, ZPCI_NR_DMA_SPACES); - if (ret) - goto out; - - zpci_map_resources(pdev); - zpci_register_ioat(zdev, 0, zdev->start_dma, zdev->end_dma, - (u64) zdev->dma_table); - -out: - return ret; -} - -static int zpci_freeze(struct device *dev) -{ - struct pci_dev *pdev = to_pci_dev(dev); - struct zpci_dev *zdev = to_zpci(pdev); - - if (zdev->state != ZPCI_FN_STATE_ONLINE) - return 0; - - zpci_unregister_ioat(zdev, 0); - zpci_unmap_resources(pdev); - return clp_disable_fh(zdev); -} - -struct dev_pm_ops pcibios_pm_ops = { - .thaw_noirq = zpci_restore, - .freeze_noirq = zpci_freeze, - .restore_noirq = zpci_restore, - .poweroff_noirq = zpci_freeze, -}; -#endif /* CONFIG_HIBERNATE_CALLBACKS */ - static int zpci_alloc_domain(struct zpci_dev *zdev) { if (zpci_unique_uid) { |