From ed975065c31c2a0372e13c19e8140b69814a98ba Mon Sep 17 00:00:00 2001 From: Asutosh Das Date: Fri, 13 Jan 2023 12:48:51 -0800 Subject: scsi: ufs: core: mcq: Add completion support in poll Complete CQE requests in poll. Assumption is that several poll completion may happen in different CPUs for the same completion queue. Hence a spin lock protection is added. Co-developed-by: Can Guo Signed-off-by: Can Guo Signed-off-by: Asutosh Das Reviewed-by: Bart Van Assche Reviewed-by: Manivannan Sadhasivam Reviewed-by: Stanley Chu Signed-off-by: Martin K. Petersen --- include/ufs/ufshcd.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/ufs') diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index 0dcb104a6713..33973e9f6d6a 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -1086,6 +1086,7 @@ struct ufs_hba { * @sq_lock: serialize submission queue access * @cq_tail_slot: current slot to which CQ tail pointer is pointing * @cq_head_slot: current slot to which CQ head pointer is pointing + * @cq_lock: Synchronize between multiple polling instances */ struct ufs_hw_queue { void __iomem *mcq_sq_head; @@ -1103,6 +1104,7 @@ struct ufs_hw_queue { spinlock_t sq_lock; u32 cq_tail_slot; u32 cq_head_slot; + spinlock_t cq_lock; }; static inline bool is_mcq_enabled(struct ufs_hba *hba) -- cgit v1.2.3