On Sat, Jan 1, 2011 at 5:45 PM, roel kluin <roel.kluin@xxxxxxxxx> wrote:
> The WRITE_{6,10,12} are defined numbers, so the branch was always taken.
>
> Signed-off-by: Roel Kluin <roel.kluin@xxxxxxxxx>
> ---
> drivers/scsi/arcmsr/arcmsr_hba.c | 3 ++-
> 1 files changed, 2 insertions(+), 1 deletions(-)
>
> See include/scsi/scsi.h:58-123 for
> #define WRITE_6 0x0a
> #define WRITE_10 0x2a
> #define WRITE_12 0xaa
>
> diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
> index 17e3df4..a6e5222 100644
> --- a/drivers/scsi/arcmsr/arcmsr_hba.c
> +++ b/drivers/scsi/arcmsr/arcmsr_hba.c
> @@ -1171,7 +1171,8 @@ 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->cmnd[0] & WRITE_6 || pcmd->cmnd[0] & WRITE_10 ||
> + pcmd->cmnd[0] & WRITE_12 ){
I'm not sure, if the compiler will optimize this anyway, but would it
look better this way:
if (pcmd->cmnd[0] & (WRITE_6 | WRITE_10 | WRITE_12)){
And that would open the question what really was meant, as that will
be equal to:
if (pcmd->cmnd[0] & WRITE_12){
(if you look at the constants, you can skip WRITE_6 and _10 as there
bits are already included in WRITE_12)
> arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
> }
> ccb->arc_cdb_size = arccdbsize;
> --
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