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Commit 775ab521 authored by Rafał Miłecki's avatar Rafał Miłecki Committed by John W. Linville
Browse files

bcma: support for suspend and resume 



bcma used to lock up machine without enabling PCI or initializing CC.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarRafał Miłecki <zajec5@gmail.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent bbea3bc4

drivers/bcma/bcma_private.h

+3 −0
Original line number Diff line number Diff line
@@ -18,6 +18,9 @@ void bcma_bus_unregister(struct bcma_bus *bus); 
int __init bcma_bus_early_register(struct bcma_bus *bus,

				   struct bcma_device *core_cc,

				   struct bcma_device *core_mips);

#ifdef CONFIG_PM

int bcma_bus_resume(struct bcma_bus *bus);

#endif



/* scan.c */

int bcma_bus_scan(struct bcma_bus *bus);

drivers/bcma/host_pci.c

+37 −0
Original line number Diff line number Diff line
@@ -234,6 +234,41 @@ static void bcma_host_pci_remove(struct pci_dev *dev) 
	pci_set_drvdata(dev, NULL);

}



#ifdef CONFIG_PM

static int bcma_host_pci_suspend(struct pci_dev *dev, pm_message_t state)

{

	/* Host specific */

	pci_save_state(dev);

	pci_disable_device(dev);

	pci_set_power_state(dev, pci_choose_state(dev, state));



	return 0;

}



static int bcma_host_pci_resume(struct pci_dev *dev)

{

	struct bcma_bus *bus = pci_get_drvdata(dev);

	int err;



	/* Host specific */

	pci_set_power_state(dev, 0);

	err = pci_enable_device(dev);

	if (err)

		return err;

	pci_restore_state(dev);



	/* Bus specific */

	err = bcma_bus_resume(bus);

	if (err)

		return err;



	return 0;

}

#else /* CONFIG_PM */

# define bcma_host_pci_suspend	NULL

# define bcma_host_pci_resume	NULL

#endif /* CONFIG_PM */



static DEFINE_PCI_DEVICE_TABLE(bcma_pci_bridge_tbl) = {

	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x0576) },

	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4331) },
@@ -249,6 +284,8 @@ static struct pci_driver bcma_pci_bridge_driver = { 
	.id_table = bcma_pci_bridge_tbl,

	.probe = bcma_host_pci_probe,

	.remove = bcma_host_pci_remove,

	.suspend = bcma_host_pci_suspend,

	.resume = bcma_host_pci_resume,

};



int __init bcma_host_pci_init(void)

drivers/bcma/main.c

+16 −0
Original line number Diff line number Diff line
@@ -240,6 +240,22 @@ int __init bcma_bus_early_register(struct bcma_bus *bus, 
	return 0;

}



#ifdef CONFIG_PM

int bcma_bus_resume(struct bcma_bus *bus)

{

	struct bcma_device *core;



	/* Init CC core */

	core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON);

	if (core) {

		bus->drv_cc.setup_done = false;

		bcma_core_chipcommon_init(&bus->drv_cc);

	}



	return 0;

}

#endif



int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)

{

	drv->drv.name = drv->name;