genirq: provide irq_to_desc() to non-genirq architectures too
Impact: build fix on non-genirq architectures
Sam Ravnborg reported this build failure on sparc32 allmodconfig,
the GPIO drivers assume the presence of irq_to_desc():
drivers/gpio/gpiolib.c: In function `gpiolib_dbg_show':
drivers/gpio/gpiolib.c:1146: error: implicit declaration of function 'irq_to_desc'
Add it in the !genirq case too.
Reported-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Tested-by: Sam Ravnborg <sam@ravnborg.org>
diff --git a/include/linux/irqnr.h b/include/linux/irqnr.h
index 5504a5c..86af92e 100644
--- a/include/linux/irqnr.h
+++ b/include/linux/irqnr.h
@@ -8,7 +8,12 @@
#ifndef CONFIG_GENERIC_HARDIRQS
#include <asm/irq.h>
-# define nr_irqs NR_IRQS
+
+/*
+ * Wrappers for non-genirq architectures:
+ */
+#define nr_irqs NR_IRQS
+#define irq_to_desc(irq) (&irq_desc[irq])
# define for_each_irq_desc(irq, desc) \
for (irq = 0; irq < nr_irqs; irq++)