diff mbox

qla2xxx: Fix warning reported by static checker

Message ID 1453320687-15708-1-git-send-email-himanshu.madhani@qlogic.com (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Himanshu Madhani Jan. 20, 2016, 8:11 p.m. UTC
This patch fixes following warning

drivers/scsi/qla2xxx/qla_target.c:3587 qlt_do_ctio_completion()
warn: impossible condition '(logged_out == 41) => (0-1 == 41)'

drivers/scsi/qla2xxx/qla_target.c
 3580                  case CTIO_PORT_LOGGED_OUT:
 3581                  case CTIO_PORT_UNAVAILABLE:
 3582                  {
 3583                          bool logged_out = (status & 0xFFFF);
 3584                          ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
 3585				   "qla_target(%d): CTIO with %s status %x "
 3586                              "received (state %x, se_cmd %p)\n", vha->vp_idx,
 3587                              (logged_out == CTIO_PORT_LOGGED_OUT) ?
 				    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
				    Bool cannot equal 0x26.
 3588				   "PORT LOGGED OUT" : "PORT UNAVAILABLE",

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
---
 drivers/scsi/qla2xxx/qla_target.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

Comments

Nicholas A. Bellinger Jan. 20, 2016, 9:39 p.m. UTC | #1
Hi Himanshu,

On Wed, 2016-01-20 at 15:11 -0500, Himanshu Madhani wrote:
> This patch fixes following warning
> 
> drivers/scsi/qla2xxx/qla_target.c:3587 qlt_do_ctio_completion()
> warn: impossible condition '(logged_out == 41) => (0-1 == 41)'
> 
> drivers/scsi/qla2xxx/qla_target.c
>  3580                  case CTIO_PORT_LOGGED_OUT:
>  3581                  case CTIO_PORT_UNAVAILABLE:
>  3582                  {
>  3583                          bool logged_out = (status & 0xFFFF);
>  3584                          ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
>  3585				   "qla_target(%d): CTIO with %s status %x "
>  3586                              "received (state %x, se_cmd %p)\n", vha->vp_idx,
>  3587                              (logged_out == CTIO_PORT_LOGGED_OUT) ?
>  				    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> 				    Bool cannot equal 0x26.
>  3588				   "PORT LOGGED OUT" : "PORT UNAVAILABLE",
> 
> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
> Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
> ---
>  drivers/scsi/qla2xxx/qla_target.c |    7 ++++---
>  1 files changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
> index 80651cd..829b534 100644
> --- a/drivers/scsi/qla2xxx/qla_target.c
> +++ b/drivers/scsi/qla2xxx/qla_target.c
> @@ -3597,12 +3597,13 @@ static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
>  		case CTIO_PORT_LOGGED_OUT:
>  		case CTIO_PORT_UNAVAILABLE:
>  		{
> -			bool logged_out = (status & 0xFFFF);
> +			bool logged_out =
> +			    (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
> +
>  			ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
>  			    "qla_target(%d): CTIO with %s status %x "
>  			    "received (state %x, se_cmd %p)\n", vha->vp_idx,
> -			    (logged_out == CTIO_PORT_LOGGED_OUT) ?
> -			    "PORT LOGGED OUT" : "PORT UNAVAILABLE",
> +			    logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
>  			    status, cmd->state, se_cmd);
>  
>  			if (logged_out && cmd->sess) {

I picked up Arnd's patch earlier this morning, and will include this
better version in the post -rc1 fixes PULL request.



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diff mbox

Patch

diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 80651cd..829b534 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -3597,12 +3597,13 @@  static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle,
 		case CTIO_PORT_LOGGED_OUT:
 		case CTIO_PORT_UNAVAILABLE:
 		{
-			bool logged_out = (status & 0xFFFF);
+			bool logged_out =
+			    (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT;
+
 			ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
 			    "qla_target(%d): CTIO with %s status %x "
 			    "received (state %x, se_cmd %p)\n", vha->vp_idx,
-			    (logged_out == CTIO_PORT_LOGGED_OUT) ?
-			    "PORT LOGGED OUT" : "PORT UNAVAILABLE",
+			    logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE",
 			    status, cmd->state, se_cmd);
 
 			if (logged_out && cmd->sess) {