Need to add one to MAXQ to obtain number of hardware queue.

Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com>
---
 drivers/ufs/core/ufs-mcq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c
index a39746b2a8be..5d5bc0bc6e88 100644
--- a/drivers/ufs/core/ufs-mcq.c
+++ b/drivers/ufs/core/ufs-mcq.c
@@ -150,7 +150,7 @@ static int ufshcd_mcq_config_nr_queues(struct ufs_hba *hba)
 	u32 hba_maxq, rem, tot_queues;
 	struct Scsi_Host *host = hba->host;
 
-	hba_maxq = FIELD_GET(MAX_QUEUE_SUP, hba->mcq_capabilities);
+	hba_maxq = FIELD_GET(MAX_QUEUE_SUP, hba->mcq_capabilities) + 1 ;
 
 	tot_queues = UFS_MCQ_NUM_DEV_CMD_QUEUES + read_queues + poll_queues +
 			rw_queues;
-- 
2.18.0

On 2/21/23 19:04, Po-Wen Kao wrote:
> Need to add one to MAXQ to obtain number of hardware queue.

Reviewed-by: Bart Van Assche <bvanassche@acm.org>

Hi Po-Wen,

On 2/22/2023 11:04 AM, Po-Wen Kao wrote:
> Need to add one to MAXQ to obtain number of hardware queue.
>
> Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com>
> ---
>   drivers/ufs/core/ufs-mcq.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c
> index a39746b2a8be..5d5bc0bc6e88 100644
> --- a/drivers/ufs/core/ufs-mcq.c
> +++ b/drivers/ufs/core/ufs-mcq.c
> @@ -150,7 +150,7 @@ static int ufshcd_mcq_config_nr_queues(struct ufs_hba *hba)
>   	u32 hba_maxq, rem, tot_queues;
>   	struct Scsi_Host *host = hba->host;
>   
> -	hba_maxq = FIELD_GET(MAX_QUEUE_SUP, hba->mcq_capabilities);
> +	hba_maxq = FIELD_GET(MAX_QUEUE_SUP, hba->mcq_capabilities) + 1 ;
Can we add one line comment why need to  add one to hba_maxq  here or in 
commit message?
>   
>   	tot_queues = UFS_MCQ_NUM_DEV_CMD_QUEUES + read_queues + poll_queues +
>   			rw_queues;

Best Regards.

Ziqi

Okay, I will add a comment here in next update. :)

On Thu, 2023-02-23 at 18:32 +0800, Ziqi Chen wrote:
> Hi Po-Wen,
> 
> On 2/22/2023 11:04 AM, Po-Wen Kao wrote:
> > Need to add one to MAXQ to obtain number of hardware queue.
> > 
> > Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com>
> > ---
> >   drivers/ufs/core/ufs-mcq.c | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-
> > mcq.c
> > index a39746b2a8be..5d5bc0bc6e88 100644
> > --- a/drivers/ufs/core/ufs-mcq.c
> > +++ b/drivers/ufs/core/ufs-mcq.c
> > @@ -150,7 +150,7 @@ static int ufshcd_mcq_config_nr_queues(struct
> > ufs_hba *hba)
> >   	u32 hba_maxq, rem, tot_queues;
> >   	struct Scsi_Host *host = hba->host;
> >   
> > -	hba_maxq = FIELD_GET(MAX_QUEUE_SUP, hba->mcq_capabilities);
> > +	hba_maxq = FIELD_GET(MAX_QUEUE_SUP, hba->mcq_capabilities) + 1
> > ;
> 
> Can we add one line comment why need to  add one to hba_maxq  here or
> in 
> commit message?
> >   
> >   	tot_queues = UFS_MCQ_NUM_DEV_CMD_QUEUES + read_queues +
> > poll_queues +
> >   			rw_queues;
> 
> Best Regards.
> 
> Ziqi
> 

On Wed, Feb 22, 2023 at 11:05 AM Po-Wen Kao <powen.kao@mediatek.com> wrote:
>
> Need to add one to MAXQ to obtain number of hardware queue.
>
> Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com>

Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>