ARM: OMAP3: Remove legacy IRQ for PRM

We have this coming from device tree and legacy booting is
no longer needed.

Cc: Lokesh Vutla <lokeshvutla@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 10 insertions, 4 deletions

diff --git a/arch/arm/mach-omap2/prm3xxx.c b/arch/arm/mach-omap2/prm3xxx.c
index a2dd13217c89..05858f966f7d 100644
--- a/arch/arm/mach-omap2/prm3xxx.c
+++ b/arch/arm/mach-omap2/prm3xxx.c
@@ -704,12 +704,18 @@ static int omap3xxx_prm_late_init(void)
                         omap3430_pre_es3_1_reconfigure_io_chain;
 
         np = of_find_matching_node(NULL, omap3_prm_dt_match_table);
-        if (np) {
-                irq_num = of_irq_get(np, 0);
-                if (irq_num > 0)
-                        omap3_prcm_irq_setup.irq = irq_num;
+        if (!np) {
+                pr_err("PRM: no device tree node for interrupt?\n");
+
+                return -ENODEV;
         }
 
+        irq_num = of_irq_get(np, 0);
+        if (irq_num == -EPROBE_DEFER)
+                return irq_num;
+
+        omap3_prcm_irq_setup.irq = irq_num;
+
         omap3xxx_prm_enable_io_wakeup();
 
         return omap_prcm_register_chain_handler(&omap3_prcm_irq_setup);