[PATCH 6.17 633/849] scsi: ufs: core: Change MCQ interrupt enable flow
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2025-11-11 01:37:13
Also in:
linux-patches
Subsystem:
scsi subsystem, the rest, universal flash storage host controller driver · Maintainers:
"James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
6.17-stable review patch. If anyone has any objections, please let me know. ------------------ From: Peter Wang <peter.wang@mediatek.com> [ Upstream commit 253757797973c54ea967f8fd8f40d16e4a78e6d4 ] Move the MCQ interrupt enable process to ufshcd_mcq_make_queues_operational() to ensure that interrupts are set correctly when making queues operational, similar to ufshcd_make_hba_operational(). This change addresses the issue where ufshcd_mcq_make_queues_operational() was not fully operational due to missing interrupt enablement. This change only affects host drivers that call ufshcd_mcq_make_queues_operational(), i.e. ufs-mediatek. Signed-off-by: Peter Wang <peter.wang@mediatek.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/ufs/core/ufs-mcq.c | 11 +++++++++++ drivers/ufs/core/ufshcd.c | 12 +----------- include/ufs/ufshcd.h | 1 + 3 files changed, 13 insertions(+), 11 deletions(-)
diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c
index cc88aaa106da3..c9bdd4140fd04 100644
--- a/drivers/ufs/core/ufs-mcq.c
+++ b/drivers/ufs/core/ufs-mcq.c@@ -29,6 +29,10 @@ #define MCQ_ENTRY_SIZE_IN_DWORD 8 #define CQE_UCD_BA GENMASK_ULL(63, 7) +#define UFSHCD_ENABLE_MCQ_INTRS (UTP_TASK_REQ_COMPL |\ + UFSHCD_ERROR_MASK |\ + MCQ_CQ_EVENT_STATUS) + /* Max mcq register polling time in microseconds */ #define MCQ_POLL_US 500000
@@ -355,9 +359,16 @@ EXPORT_SYMBOL_GPL(ufshcd_mcq_poll_cqe_lock); void ufshcd_mcq_make_queues_operational(struct ufs_hba *hba) { struct ufs_hw_queue *hwq; + u32 intrs; u16 qsize; int i; + /* Enable required interrupts */ + intrs = UFSHCD_ENABLE_MCQ_INTRS; + if (hba->quirks & UFSHCD_QUIRK_MCQ_BROKEN_INTR) + intrs &= ~MCQ_CQ_EVENT_STATUS; + ufshcd_enable_intr(hba, intrs); + for (i = 0; i < hba->nr_hw_queues; i++) { hwq = &hba->uhq[i]; hwq->id = i;
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index bd6d1d4c82427..b6d5d135527c0 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c@@ -45,11 +45,6 @@ UTP_TASK_REQ_COMPL |\ UFSHCD_ERROR_MASK) -#define UFSHCD_ENABLE_MCQ_INTRS (UTP_TASK_REQ_COMPL |\ - UFSHCD_ERROR_MASK |\ - MCQ_CQ_EVENT_STATUS) - - /* UIC command timeout, unit: ms */ enum { UIC_CMD_TIMEOUT_DEFAULT = 500,
@@ -372,7 +367,7 @@ EXPORT_SYMBOL_GPL(ufshcd_disable_irq); * @hba: per adapter instance * @intrs: interrupt bits */ -static void ufshcd_enable_intr(struct ufs_hba *hba, u32 intrs) +void ufshcd_enable_intr(struct ufs_hba *hba, u32 intrs) { u32 old_val = ufshcd_readl(hba, REG_INTERRUPT_ENABLE); u32 new_val = old_val | intrs;
@@ -8925,16 +8920,11 @@ static int ufshcd_alloc_mcq(struct ufs_hba *hba) static void ufshcd_config_mcq(struct ufs_hba *hba) { int ret; - u32 intrs; ret = ufshcd_mcq_vops_config_esi(hba); hba->mcq_esi_enabled = !ret; dev_info(hba->dev, "ESI %sconfigured\n", ret ? "is not " : ""); - intrs = UFSHCD_ENABLE_MCQ_INTRS; - if (hba->quirks & UFSHCD_QUIRK_MCQ_BROKEN_INTR) - intrs &= ~MCQ_CQ_EVENT_STATUS; - ufshcd_enable_intr(hba, intrs); ufshcd_mcq_make_queues_operational(hba); ufshcd_mcq_config_mac(hba, hba->nutrs);
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index a4eb5bde46e88..a060fa71b2b1b 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h@@ -1321,6 +1321,7 @@ static inline void ufshcd_rmwl(struct ufs_hba *hba, u32 mask, u32 val, u32 reg) void ufshcd_enable_irq(struct ufs_hba *hba); void ufshcd_disable_irq(struct ufs_hba *hba); +void ufshcd_enable_intr(struct ufs_hba *hba, u32 intrs); int ufshcd_alloc_host(struct device *, struct ufs_hba **); int ufshcd_hba_enable(struct ufs_hba *hba); int ufshcd_init(struct ufs_hba *, void __iomem *, unsigned int);
--
2.51.0