Re: [PATCH v3 1/1] ufs: core: Expand MCQ queue slot to DeviceQueueDepth + 1

Stanley Chu
2023-11-02T13:24:09Z

On Thu, Nov 2, 2023 at 2:26 PM <naomi.chu@mediatek.com> wrote:
>
> From: Naomi Chu <naomi.chu@mediatek.com>
>
> The UFSHCI 4.0 specification mandates that there should always be at
> least one empty slot in each queue for distinguishing between full and
> empty states. Enlarge the `hwq->max_entries` to `DeviceQueueDepth +1`
> to allow UFSHCI 4.0 controllers to fully utilize MCQ queue slots.
>
> Fixes: 4682abfae2eb ("scsi: ufs: core: mcq: Allocate memory for MCQ mode")
> Signed-off-by: Naomi Chu <naomi.chu@mediatek.com>
> ---
> drivers/ufs/core/ufs-mcq.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

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