linux-kernel - [PATCH v2 1/2] ufs: mcq: Fix missing argument 'hba' in MCQ_OPR_OFFSET

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Date: Mon, 20 May 2024 07:14:56 +0900
From: Minwoo Im <minwoo.im@...sung.com>
To: "James E . J . Bottomley" <James.Bottomley@...senPartnership.com>,
	"Martin K . Petersen" <martin.petersen@...cle.com>, Alim Akhtar
	<alim.akhtar@...sung.com>, Avri Altman <avri.altman@....com>, Bart Van
	Assche  <bvanassche@....org>
Cc: linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org, Joel Granados
	<j.granados@...sung.com>, gost.dev@...sung.com, Minwoo Im
	<minwoo.im@...sung.com>, Asutosh Das <quic_asutoshd@...cinc.com>
Subject: [PATCH v2 1/2] ufs: mcq: Fix missing argument 'hba' in
 MCQ_OPR_OFFSET_n

The MCQ_OPR_OFFSET_n macro has taken 'hba' on the caller context
without receiving 'hba' instance as an argument.  To prevent potential
bugs in future use cases, this patch added an argument 'hba'.

Fixes: 2468da61ea09 ("scsi: ufs: core: mcq: Configure operation and runtime interface")
Cc: Asutosh Das <quic_asutoshd@...cinc.com>
Signed-off-by: Minwoo Im <minwoo.im@...sung.com>
---
 drivers/ufs/core/ufs-mcq.c | 10 ++++------
 include/ufs/ufshcd.h       |  6 ++++++
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c
index 768bf87cd80d..b93ec147641c 100644
--- a/drivers/ufs/core/ufs-mcq.c
+++ b/drivers/ufs/core/ufs-mcq.c
@@ -231,8 +231,6 @@ int ufshcd_mcq_memory_alloc(struct ufs_hba *hba)
 
 /* Operation and runtime registers configuration */
 #define MCQ_CFG_n(r, i)	((r) + MCQ_QCFG_SIZE * (i))
-#define MCQ_OPR_OFFSET_n(p, i) \
-	(hba->mcq_opr[(p)].offset + hba->mcq_opr[(p)].stride * (i))
 
 static void __iomem *mcq_opr_base(struct ufs_hba *hba,
 					 enum ufshcd_mcq_opr n, int i)
@@ -343,10 +341,10 @@ void ufshcd_mcq_make_queues_operational(struct ufs_hba *hba)
 		ufsmcq_writelx(hba, upper_32_bits(hwq->sqe_dma_addr),
 			      MCQ_CFG_n(REG_SQUBA, i));
 		/* Submission Queue Doorbell Address Offset */
-		ufsmcq_writelx(hba, MCQ_OPR_OFFSET_n(OPR_SQD, i),
+		ufsmcq_writelx(hba, ufshcd_mcq_opr_offset(hba, OPR_SQD, i),
 			      MCQ_CFG_n(REG_SQDAO, i));
 		/* Submission Queue Interrupt Status Address Offset */
-		ufsmcq_writelx(hba, MCQ_OPR_OFFSET_n(OPR_SQIS, i),
+		ufsmcq_writelx(hba, ufshcd_mcq_opr_offset(hba, OPR_SQIS, i),
 			      MCQ_CFG_n(REG_SQISAO, i));
 
 		/* Completion Queue Lower Base Address */
@@ -356,10 +354,10 @@ void ufshcd_mcq_make_queues_operational(struct ufs_hba *hba)
 		ufsmcq_writelx(hba, upper_32_bits(hwq->cqe_dma_addr),
 			      MCQ_CFG_n(REG_CQUBA, i));
 		/* Completion Queue Doorbell Address Offset */
-		ufsmcq_writelx(hba, MCQ_OPR_OFFSET_n(OPR_CQD, i),
+		ufsmcq_writelx(hba, ufshcd_mcq_opr_offset(hba, OPR_CQD, i),
 			      MCQ_CFG_n(REG_CQDAO, i));
 		/* Completion Queue Interrupt Status Address Offset */
-		ufsmcq_writelx(hba, MCQ_OPR_OFFSET_n(OPR_CQIS, i),
+		ufsmcq_writelx(hba, ufshcd_mcq_opr_offset(hba, OPR_CQIS, i),
 			      MCQ_CFG_n(REG_CQISAO, i));
 
 		/* Save the base addresses for quicker access */
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index a35e12f8e68b..eec7c97e3dbe 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -1132,6 +1132,12 @@ static inline bool is_mcq_enabled(struct ufs_hba *hba)
 	return hba->mcq_enabled;
 }
 
+static inline unsigned int ufshcd_mcq_opr_offset(struct ufs_hba *hba,
+		enum ufshcd_mcq_opr opr, int idx)
+{
+	return hba->mcq_opr[opr].offset + hba->mcq_opr[opr].stride * idx;
+}
+
 #ifdef CONFIG_SCSI_UFS_VARIABLE_SG_ENTRY_SIZE
 static inline size_t ufshcd_sg_entry_size(const struct ufs_hba *hba)
 {
-- 
2.34.1