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

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Message-ID: <1294073011.4721.7.camel@mulgrave.site>
Date:	Mon, 03 Jan 2011 10:43:30 -0600
From:	James Bottomley <James.Bottomley@...e.de>
To:	roel kluin <roel.kluin@...il.com>
Cc:	Matthew Wilcox <matthew@....cx>, just.for.lkml@...glemail.com,
	nick.cheng@...ca.com.tw, Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-scsi@...r.kernel.org
Subject: Re: [PATCH] [SCSI] arcmsr: &/| confusion in arcmsr_build_ccb()

On Sat, 2011-01-01 at 19:40 +0100, roel kluin wrote:
> 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;

Compile checking patches you send in next time would be most welcome:

  CC [M]  drivers/scsi/arcmsr/arcmsr_hba.o
drivers/scsi/arcmsr/arcmsr_hba.c:1177:5: error: expected ‘=’, ‘,’, ‘;’,
‘asm’ or ‘__attribute__’ before ‘->’ token
drivers/scsi/arcmsr/arcmsr_hba.c:1178:2: error: expected identifier or
‘(’ before ‘return’
drivers/scsi/arcmsr/arcmsr_hba.c:1179:1: error: expected identifier or
‘(’ before ‘}’ token
drivers/scsi/arcmsr/arcmsr_hba.c: In function ‘arcmsr_build_ccb’:
drivers/scsi/arcmsr/arcmsr_hba.c:1176:2: warning: control reaches end of
non-void function

James


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