linux-kernel - [PATCH 2/2] et131x: Fix the add

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Message-ID: <20091012143823.20944.3745.stgit@localhost.localdomain>
Date:	Mon, 12 Oct 2009 15:38:26 +0100
From:	Alan Cox <alan@...ux.intel.com>
To:	greg@...ah.com, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] et131x: Fix the add_10bit macro

Duh.. we need to preserve the wrap bit when adding.

Signed-off-by: Alan Cox <alan@...ux.intel.com>
---

 drivers/staging/et131x/et1310_address_map.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)


diff --git a/drivers/staging/et131x/et1310_address_map.h b/drivers/staging/et131x/et1310_address_map.h
index 6294d38..2c3d65a 100644
--- a/drivers/staging/et131x/et1310_address_map.h
+++ b/drivers/staging/et131x/et1310_address_map.h
@@ -223,7 +223,7 @@ typedef union _TXDMA_PR_NUM_DES_t {
 
 extern inline void add_10bit(u32 *v, int n)
 {
-	*v = INDEX10(*v + n);
+	*v = INDEX10(*v + n) | (*v & ET_DMA10_WRAP);
 }
 
 /*

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