diff options
| author | Johannes Thumshirn <johannes.thumshirn@men.de> | 2014-04-24 14:35:25 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-27 17:38:11 -0700 |
| commit | 4ec65b77c64504e178d75aaba6ac96f68837416c (patch) | |
| tree | 573c968f454b51209892fd0ede0c1d56d63f5649 /drivers/mcb/mcb-core.c | |
| parent | 2e1c951f5da23faaa60224628f44b100ab212d46 (diff) | |
| download | linux-4ec65b77c64504e178d75aaba6ac96f68837416c.tar.bz2 | |
mcb: Add support for shared PCI IRQs
Add support for shared PCI IRQs to mcb and mcb-pci.
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@men.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/mcb/mcb-core.c')
| -rw-r--r-- | drivers/mcb/mcb-core.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/drivers/mcb/mcb-core.c b/drivers/mcb/mcb-core.c index bbe12932d404..9018ab83517a 100644 --- a/drivers/mcb/mcb-core.c +++ b/drivers/mcb/mcb-core.c @@ -183,14 +183,14 @@ EXPORT_SYMBOL_GPL(mcb_device_register); * * Allocate a new @mcb_bus. */ -struct mcb_bus *mcb_alloc_bus(void) +struct mcb_bus *mcb_alloc_bus(struct device *carrier) { struct mcb_bus *bus; int bus_nr; bus = kzalloc(sizeof(struct mcb_bus), GFP_KERNEL); if (!bus) - return NULL; + return ERR_PTR(-ENOMEM); bus_nr = ida_simple_get(&mcb_ida, 0, 0, GFP_KERNEL); if (bus_nr < 0) { @@ -200,7 +200,7 @@ struct mcb_bus *mcb_alloc_bus(void) INIT_LIST_HEAD(&bus->children); bus->bus_nr = bus_nr; - + bus->carrier = carrier; return bus; } EXPORT_SYMBOL_GPL(mcb_alloc_bus); @@ -378,6 +378,13 @@ void mcb_release_mem(struct resource *mem) } EXPORT_SYMBOL_GPL(mcb_release_mem); +static int __mcb_get_irq(struct mcb_device *dev) +{ + struct resource *irq = &dev->irq; + + return irq->start; +} + /** * mcb_get_irq() - Get device's IRQ number * @dev: The @mcb_device the IRQ is for @@ -386,9 +393,12 @@ EXPORT_SYMBOL_GPL(mcb_release_mem); */ int mcb_get_irq(struct mcb_device *dev) { - struct resource *irq = &dev->irq; + struct mcb_bus *bus = dev->bus; - return irq->start; + if (bus->get_irq) + return bus->get_irq(dev); + + return __mcb_get_irq(dev); } EXPORT_SYMBOL_GPL(mcb_get_irq); |