linux-kernel - [PATCH 1/3] powerpc: ipic: Fix mcp status helper functions

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Date:	Tue,  6 Jan 2015 12:26:58 +0100
From:	esben.haabendal@...il.com
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Michael Ellerman <mpe@...erman.id.au>
Cc:	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	Esben Haabendal <eha@...f.com>
Subject: [PATCH 1/3] powerpc: ipic: Fix mcp status helper functions

From: Esben Haabendal <eha@...f.com>

Read and write the SERSR (System Error Status Register) instead of the
SERMR (System Error Mask Register), to actually get and clear the status
bits.

Signed-off-by: Esben Haabendal <eha@...f.com>
---
 arch/powerpc/sysdev/ipic.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/sysdev/ipic.c b/arch/powerpc/sysdev/ipic.c
index b287337..2e41a73 100644
--- a/arch/powerpc/sysdev/ipic.c
+++ b/arch/powerpc/sysdev/ipic.c
@@ -843,12 +843,12 @@ void ipic_disable_mcp(enum ipic_mcp_irq mcp_irq)
 
 u32 ipic_get_mcp_status(void)
 {
-	return ipic_read(primary_ipic->regs, IPIC_SERMR);
+	return ipic_read(primary_ipic->regs, IPIC_SERSR);
 }
 
 void ipic_clear_mcp_status(u32 mask)
 {
-	ipic_write(primary_ipic->regs, IPIC_SERMR, mask);
+	ipic_write(primary_ipic->regs, IPIC_SERSR, mask);
 }
 
 /* Return an interrupt vector or NO_IRQ if no interrupt is pending. */
-- 
2.1.4

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