Re: [PATCH] qla2xxx: Fix a recently introduced kernel warning

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On 8/19/19 7:18 PM, Bart Van Assche wrote:
> According to the firmware documentation a status type 0 IOCB can be
> followed by one or more status continuation type 0 IOCBs. Hence do not
> complain if the completion function is not called from inside the status
> type 0 IOCB handler.
> 
> WARNING: CPU: 10 PID: 425 at drivers/scsi/qla2xxx/qla_isr.c:2784
> qla2x00_status_entry.isra.7+0x484/0x17b0 [qla2xxx]
> CPU: 10 PID: 425 Comm: kworker/10:1 Tainted: G            E     5.3.0-rc4-next-20190813-autotest-autotest #1
> Workqueue: qla2xxx_wq qla25xx_free_rsp_que [qla2xxx]
> Call Trace:
>  qla2x00_status_entry.isra.7+0x1484/0x17b0 [qla2xxx] (unreliable)
>  qla24xx_process_response_queue+0x7d8/0xbd0 [qla2xxx]
>  qla25xx_free_rsp_que+0x1a0/0x220 [qla2xxx]
>  process_one_work+0x25c/0x520
>  worker_thread+0x8c/0x5e0
>  kthread+0x154/0x1a0
>  ret_from_kernel_thread+0x5c/0x7c
> 
> Cc: Himanshu Madhani <hmadhani@xxxxxxxxxxx>
> Cc: Abdul Haleem <abdhalee@xxxxxxxxxxxxxxxxxx>
> Reported-and-tested-by: Abdul Haleem <abdhalee@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
> ---
>  drivers/scsi/qla2xxx/qla_isr.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
> index cd39ac18c5fd..d81b5ecce24b 100644
> --- a/drivers/scsi/qla2xxx/qla_isr.c
> +++ b/drivers/scsi/qla2xxx/qla_isr.c
> @@ -2780,8 +2780,6 @@ qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
>  
>  	if (rsp->status_srb == NULL)
>  		sp->done(sp,  * do-not-remove-the-first-digit-when-auto-completing-the-tpg-tag
 res);
> -	else
> -		WARN_ON_ONCE(true);
>  }
>  
>  /**
> 

Reviewed-by: Lee Duncan <lduncan@xxxxxxxx>




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