microblaze: Remove NO_IRQ from architecture

NO_IRQ shouldn't be used by any driver. All Microblaze
drivers are fixed that's why NO_IRQ can be removed.

Also fix pci-common.c which has references to NO_IRQ removed.

Signed-off-by: Michal Simek <monstr@monstr.eu>
Reviewed-by: Ryan Mallon <rmallon@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>

2 files changed, 2 insertions, 4 deletions

diff --git a/arch/microblaze/include/asm/irq.h b/arch/microblaze/include/asm/irq.h
index b116a825de77..a175132e4496 100644
--- a/arch/microblaze/include/asm/irq.h
+++ b/arch/microblaze/include/asm/irq.h
@@ -27,8 +27,6 @@ typedef unsigned long irq_hw_number_t;
 
 extern unsigned int nr_irq;
 
-#define NO_IRQ 0
-
 struct pt_regs;
 extern void do_IRQ(struct pt_regs *regs);
 
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index db841c7b9d5b..0d71b2ed8107 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -242,7 +242,7 @@ int pci_read_irq_line(struct pci_dev *pci_dev)
                          line, pin);
 
                 virq = irq_create_mapping(NULL, line);
-                if (virq != NO_IRQ)
+                if (virq)
                         irq_set_irq_type(virq, IRQ_TYPE_LEVEL_LOW);
         } else {
                 pr_debug(" Got one, spec %d cells (0x%08x 0x%08x...) on %s\n",
@@ -253,7 +253,7 @@ int pci_read_irq_line(struct pci_dev *pci_dev)
                 virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
                                              oirq.size);
         }
-        if (virq == NO_IRQ) {
+        if (!virq) {
                 pr_debug(" Failed to map !\n");
                 return -1;
         }