linux-kernel - [PATCH] irqchip: bcm2836: Drop extra memory barrier in SMP boot.

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Message-Id: <1454620468-31303-1-git-send-email-eric@anholt.net>
Date:	Thu,  4 Feb 2016 13:14:28 -0800
From:	Eric Anholt <eric@...olt.net>
To:	Florian Fainelli <f.fainelli@...il.com>
Cc:	linux-rpi-kernel@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Stephen Warren <swarren@...dotorg.org>,
	Lee Jones <lee@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jason Cooper <jason@...edaemon.net>,
	Marc Zyngier <marc.zyngier@....com>,
	Eric Anholt <eric@...olt.net>
Subject: [PATCH] irqchip: bcm2836: Drop extra memory barrier in SMP boot.

The writel() immediately after this has a barrier, anyway.

Signed-off-by: Eric Anholt <eric@...olt.net>
---
 drivers/irqchip/irq-bcm2836.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/irqchip/irq-bcm2836.c b/drivers/irqchip/irq-bcm2836.c
index 963065a..b6e950d 100644
--- a/drivers/irqchip/irq-bcm2836.c
+++ b/drivers/irqchip/irq-bcm2836.c
@@ -229,7 +229,6 @@ int __init bcm2836_smp_boot_secondary(unsigned int cpu,
 	unsigned long secondary_startup_phys =
 		(unsigned long)virt_to_phys((void *)secondary_startup);
 
-	dsb();
 	writel(secondary_startup_phys,
 	       intc.base + LOCAL_MAILBOX3_SET0 + 16 * cpu);
 
-- 
2.7.0