linux-kernel - [PATCH 2/2] DAC960: fix -Wuninitialized warning

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Message-Id: <1328885654-22461-3-git-send-email-danny.kukawka@bisect.de>
Date:	Fri, 10 Feb 2012 15:54:14 +0100
From:	Danny Kukawka <danny.kukawka@...ect.de>
To:	Tejun Heo <tj@...nel.org>
Cc:	Danny Kukawka <dkukawka@...e.de>,
	Lucas De Marchi <lucas.demarchi@...fusion.mobi>,
	Jens Axboe <jaxboe@...ionio.com>, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] DAC960: fix -Wuninitialized warning

Set CommandMailbox with memset before use it. Fix for:

drivers/block/DAC960.c: In function ‘DAC960_V1_EnableMemoryMailboxInterface’:
arch/x86/include/asm/io.h:61:1: warning: ‘CommandMailbox.Bytes[12]’
 may be used uninitialized in this function [-Wuninitialized]
drivers/block/DAC960.c:1175:30: note: ‘CommandMailbox.Bytes[12]’
 was declared here

Signed-off-by: Danny Kukawka <danny.kukawka@...ect.de>
---
 drivers/block/DAC960.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index 66b8729..40000e2 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -1177,7 +1177,8 @@ static bool DAC960_V1_EnableMemoryMailboxInterface(DAC960_Controller_T
   int TimeoutCounter;
   int i;
 
-  
+  memset(&CommandMailbox, 0, sizeof(DAC960_V1_CommandMailbox_T));
+
   if (pci_set_dma_mask(Controller->PCIDevice, DMA_BIT_MASK(32)))
 	return DAC960_Failure(Controller, "DMA mask out of range");
   Controller->BounceBufferLimit = DMA_BIT_MASK(32);
-- 
1.7.7.3

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