linux-kernel - RE: [PATCH] [SCSI] arcmsr: &/| confusion in arcmsr_build

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Message-ID: <9ACDAD741D6D425FA95546BDA34DBAD0@arecaaebe11fae>
Date:	Mon, 3 Jan 2011 10:35:40 +0800
From:	"NickCheng" <nick.cheng@...ca.com.tw>
To:	"'roel kluin'" <roel.kluin@...il.com>
Cc:	"'Andrew Morton'" <akpm@...ux-foundation.org>,
	"'LKML'" <linux-kernel@...r.kernel.org>, <James.Bottomley@...e.de>,
	<linux-scsi@...r.kernel.org>, "'Matthew Wilcox'" <matthew@....cx>,
	<just.for.lkml@...glemail.com>
Subject: RE: [PATCH] [SCSI] arcmsr: &/| confusion in arcmsr_build_ccb()

Hi Roel,
Thanks for your reminding.
I agree with you.
This patch is absolutely correct.
-----Original Message-----
From: roel kluin [mailto:roel.kluin@...il.com] 
Sent: Sunday, January 02, 2011 2:40 AM
To: Matthew Wilcox; just.for.lkml@...glemail.com
Cc: nick.cheng@...ca.com.tw; Andrew Morton; LKML; James.Bottomley@...e.de;
linux-scsi@...r.kernel.org
Subject: Re: [PATCH] [SCSI] arcmsr: &/| confusion in arcmsr_build_ccb()

Make sure no other command which does a write, such as UNMAP and WRITE_32,
is missed.

Signed-off-by: Roel Kluin <roel.kluin@...il.com>
---
 drivers/scsi/arcmsr/arcmsr_hba.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

If you agree this is the right fix, please ack.

diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c
b/drivers/scsi/arcmsr/arcmsr_hba.c
index 17e3df4..a5acedc 100644
--- a/drivers/scsi/arcmsr/arcmsr_hba.c
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c
@@ -1171,7 +1171,7 @@ static int arcmsr_build_ccb(struct AdapterControlBlock
*acb,
 	arcmsr_cdb->msgPages = arccdbsize/0x100 + (arccdbsize % 0x100 ? 1 :
0);
 	if ( arccdbsize > 256)
 		arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
-	if (pcmd->cmnd[0]|WRITE_6 || pcmd->cmnd[0]|WRITE_10 ||
pcmd->cmnd[0]|WRITE_12 ){
+	if (pcmd->sc_data_direction == DMA_TO_DEVICE)
 		arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
 	}
 	ccb->arc_cdb_size = arccdbsize;

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