ARM: OMAP: irqs: Fix NR_IRQS value to handle PRCM interrupts
Cousson, Benoit [Tue, 28 Feb 2012 13:10:09 +0000 (14:10 +0100)]
The following commit: 2f31b51659c2d8315ea2888ba5b93076febe672b
Author: Tero Kristo <t-kristo@ti.com>
Date:   Fri Dec 16 14:37:00 2011 -0700

    ARM: OMAP4: PRM: use PRCM interrupt handler

introduced the PRCM interrupt handler and thus the need
for 64 more interrupts. Since SPARSE_IRQ is still not fully
functional on OMAP, the NR_IRQS needs to be updated to avoid
the failure that happen during irq_alloc_descs call inside
the PRCM driver:

[    0.208221] PRCM: failed to allocate irq descs: -12

Later the mux framework is then unable to request an IRQ from
the PRCM interrupt handler.

[    1.802795] mux: Failed to setup hwmod io irq -22

Fix that by adding 64 more interrupts for OMAP2PLUS config.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/plat-omap/include/plat/irqs.h

index 2efd645..37bbbbb 100644 (file)
 #define OMAP_GPMC_NR_IRQS      8
 #define OMAP_GPMC_IRQ_END      (OMAP_GPMC_IRQ_BASE + OMAP_GPMC_NR_IRQS)
 
+/* PRCM IRQ handler */
+#ifdef CONFIG_ARCH_OMAP2PLUS
+#define OMAP_PRCM_IRQ_BASE     (OMAP_GPMC_IRQ_END)
+#define OMAP_PRCM_NR_IRQS      64
+#define OMAP_PRCM_IRQ_END      (OMAP_PRCM_IRQ_BASE + OMAP_PRCM_NR_IRQS)
+#else
+#define OMAP_PRCM_IRQ_END      OMAP_GPMC_IRQ_END
+#endif
 
-#define NR_IRQS                        OMAP_GPMC_IRQ_END
+#define NR_IRQS                        OMAP_PRCM_IRQ_END
 
 #define OMAP_IRQ_BIT(irq)      (1 << ((irq) % 32))