x86/htirq: Use new irqdomain interfaces to allocate/free IRQ

Use new irqdomain interfaces to allocate/free IRQ for HTIRQ, so we can
remove GENERIC_IRQ_LEGACY_ALLOC_HWIRQ later.

This patch changes the interfaces between arch independent PCI driver
and arch specific code. Currently HT_IRQ is only enabled on x86, so it
does not affect other architectures.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: David Cohen <david.a.cohen@linux.intel.com>
Cc: Sander Eikelenboom <linux@eikelenboom.it>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Link: http://lkml.kernel.org/r/1428905519-23704-7-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 3 insertions, 4 deletions

diff --git a/drivers/pci/htirq.c b/drivers/pci/htirq.c
index a94dd2c4183a..ceb0ebeb7b5f 100644
--- a/drivers/pci/htirq.c
+++ b/drivers/pci/htirq.c
@@ -117,8 +117,8 @@ int __ht_create_irq(struct pci_dev *dev, int idx, ht_irq_update_t *update)
 	cfg->msg.address_lo = 0xffffffff;
 	cfg->msg.address_hi = 0xffffffff;
 
-	irq = irq_alloc_hwirq(dev_to_node(&dev->dev));
-	if (!irq) {
+	irq = arch_alloc_ht_irq(dev);
+	if (irq <= 0) {
 		kfree(cfg);
 		return -EBUSY;
 	}
@@ -163,8 +163,7 @@ void ht_destroy_irq(unsigned int irq)
 	cfg = irq_get_handler_data(irq);
 	irq_set_chip(irq, NULL);
 	irq_set_handler_data(irq, NULL);
-	irq_free_hwirq(irq);
-
+	arch_free_ht_irq(irq);
 	kfree(cfg);
 }
 EXPORT_SYMBOL(ht_destroy_irq);