linux-kernel - [patch 016/123] x86, uv: uv_global_gru_mmr

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Date:	Fri, 12 Mar 2010 16:11:54 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Jack Steiner <steiner@....com>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: [patch 016/123] x86, uv: uv_global_gru_mmr_address() macro fix

2.6.33-stable review patch.  If anyone has any objections, please let me know.

-----------------

From: Jack Steiner <steiner@....com>

commit e1e0138d7d10fd447c71cc70f367eac514bd3ce4 upstream.

Fix bug in uv_global_gru_mmr_address macro.  Macro failed
to cast an int value to a long prior to a left shift > 32.

Signed-off-by: Jack Steiner <steiner@....com>
LKML-Reference: <20100107161240.GA2610@....com>
Signed-off-by: H. Peter Anvin <hpa@...or.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 arch/x86/include/asm/uv/uv_hub.h |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/arch/x86/include/asm/uv/uv_hub.h
+++ b/arch/x86/include/asm/uv/uv_hub.h
@@ -329,7 +329,8 @@ static inline unsigned long uv_read_glob
  */
 static inline unsigned long uv_global_gru_mmr_address(int pnode, unsigned long offset)
 {
-	return UV_GLOBAL_GRU_MMR_BASE | offset | (pnode << uv_hub_info->m_val);
+	return UV_GLOBAL_GRU_MMR_BASE | offset |
+		((unsigned long)pnode << uv_hub_info->m_val);
 }
 
 static inline void uv_write_global_mmr8(int pnode, unsigned long offset, unsigned char val)


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