[PATCH] ARM: at91: fix rtc irq mask for sam9x5 SoCs

[Boris BREZILLON]

The RTC IMR register is not reliable on sam9x5 SoCs, hence why me have to
mask all interrupts no matter what IMR claims about already masked irqs.

Signed-off-by: Boris BREZILLON <boris.brezillon at free-electrons.com>
Reported-by: Bryan Evenson <bevenson at melinkcorp.com>
---
Hello Bryan,

Yet another patch for you ;-).

As usual, could you tell me if it fixes your bug.

BTW, thanks for your tests.

Best Regards,

Boris

 arch/arm/mach-at91/sysirq_mask.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/arch/arm/mach-at91/sysirq_mask.c b/arch/arm/mach-at91/sysirq_mask.c
index 2ba694f..eb3d2a5 100644
--- a/arch/arm/mach-at91/sysirq_mask.c
+++ b/arch/arm/mach-at91/sysirq_mask.c
@@ -37,12 +37,7 @@ void __init at91_sysirq_mask_rtc(u32 rtc_base)
 	if (!base)
 		return;
 
-	mask = readl_relaxed(base + AT91_RTC_IMR);
-	if (mask) {
-		pr_info("AT91: Disabling rtc irq\n");
-		writel_relaxed(mask, base + AT91_RTC_IDR);
-		(void)readl_relaxed(base + AT91_RTC_IMR);	/* flush */
-	}
+	writel_relaxed(0x1f, base + AT91_RTC_IDR);
 
 	iounmap(base);
 }
-- 
1.8.3.2