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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2008-12-27 16:28:58 +0100 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-01-07 11:13:08 -0800 |
| commit | a79d682f789730dfabaebbb507c87a90c0671a62 (patch) | |
| tree | d58b75d734e88086770ceaa726ea614507b53b59 /drivers/pci | |
| parent | f06fc0b6f8a6846e0ad48aee7b0f282b4fb5dcdc (diff) | |
| download | kernel_samsung_smdk4412-a79d682f789730dfabaebbb507c87a90c0671a62.tar.gz kernel_samsung_smdk4412-a79d682f789730dfabaebbb507c87a90c0671a62.tar.bz2 kernel_samsung_smdk4412-a79d682f789730dfabaebbb507c87a90c0671a62.zip | |
PCI PM: Split PCI Express port suspend-resume
Suspend-resume of PCI Express ports has recently been moved into
_suspend_late() and _resume_early() callbacks, but some functions
executed from there should not be called with interrupts disabled,
eg. pci_enable_device(). For this reason, split the suspend-resume
of PCI Express ports into parts to be executed with interrupts
disabled and with interrupts enabled.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pcie/portdrv_pci.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index 0549fe2bdac..99a914a027f 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -41,7 +41,6 @@ static int pcie_portdrv_restore_config(struct pci_dev *dev) { int retval; - pci_restore_state(dev); retval = pci_enable_device(dev); if (retval) return retval; @@ -50,23 +49,32 @@ static int pcie_portdrv_restore_config(struct pci_dev *dev) } #ifdef CONFIG_PM -static int pcie_portdrv_suspend_late(struct pci_dev *dev, pm_message_t state) +static int pcie_portdrv_suspend(struct pci_dev *dev, pm_message_t state) { - int ret = pcie_port_device_suspend(dev, state); + return pcie_port_device_suspend(dev, state); - if (!ret) - ret = pcie_portdrv_save_config(dev); - return ret; +} + +static int pcie_portdrv_suspend_late(struct pci_dev *dev, pm_message_t state) +{ + return pci_save_state(dev); } static int pcie_portdrv_resume_early(struct pci_dev *dev) { + return pci_restore_state(dev); +} + +static int pcie_portdrv_resume(struct pci_dev *dev) +{ pcie_portdrv_restore_config(dev); return pcie_port_device_resume(dev); } #else +#define pcie_portdrv_suspend NULL #define pcie_portdrv_suspend_late NULL #define pcie_portdrv_resume_early NULL +#define pcie_portdrv_resume NULL #endif /* @@ -221,6 +229,7 @@ static pci_ers_result_t pcie_portdrv_slot_reset(struct pci_dev *dev) /* If fatal, restore cfg space for possible link reset at upstream */ if (dev->error_state == pci_channel_io_frozen) { + pci_restore_state(dev); pcie_portdrv_restore_config(dev); pci_enable_pcie_error_reporting(dev); } @@ -282,8 +291,10 @@ static struct pci_driver pcie_portdriver = { .probe = pcie_portdrv_probe, .remove = pcie_portdrv_remove, + .suspend = pcie_portdrv_suspend, .suspend_late = pcie_portdrv_suspend_late, .resume_early = pcie_portdrv_resume_early, + .resume = pcie_portdrv_resume, .err_handler = &pcie_portdrv_err_handler, }; |