ARM: at91/pit: add traces in case of error

Traces related to IRQ management are useful for timers in case of
non-working IRQ subsystem (switch to irq_domain for instance).

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/arch/arm/mach-at91/at91sam926x_time.c b/arch/arm/mach-at91/at91sam926x_time.c
index 5d71476a2832..a94758b42737 100644
--- a/arch/arm/mach-at91/at91sam926x_time.c
+++ b/arch/arm/mach-at91/at91sam926x_time.c
@@ -174,8 +174,10 @@ static int __init of_at91sam926x_pit_init(void)
 
         /* Get the interrupts property */
         ret = irq_of_parse_and_map(np, 0);
-        if (!ret)
+        if (!ret) {
+                pr_crit("AT91: PIT: Unable to get IRQ from DT\n");
                 goto ioremap_err;
+        }
         at91sam926x_pit_irq.irq = ret;
 
         of_node_put(np);
@@ -203,6 +205,7 @@ static void __init at91sam926x_pit_init(void)
 {
         unsigned long   pit_rate;
         unsigned        bits;
+        int             ret;
 
         /* For device tree enabled device: initialize here */
         of_at91sam926x_pit_init();
@@ -227,7 +230,9 @@ static void __init at91sam926x_pit_init(void)
         clocksource_register_hz(&pit_clk, pit_rate);
 
         /* Set up irq handler */
-        setup_irq(at91sam926x_pit_irq.irq, &at91sam926x_pit_irq);
+        ret = setup_irq(at91sam926x_pit_irq.irq, &at91sam926x_pit_irq);
+        if (ret)
+                pr_crit("AT91: PIT: Unable to setup IRQ\n");
 
         /* Set up and register clockevents */
         pit_clkevt.mult = div_sc(pit_rate, NSEC_PER_SEC, pit_clkevt.shift);