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Message-ID: <20241022002702.302728-1-linux@treblig.org>
Date: Tue, 22 Oct 2024 01:27:02 +0100
From: linux@...blig.org
To: dwmw2@...radead.org,
baolu.lu@...ux.intel.com,
joro@...tes.org,
will@...nel.org,
robin.murphy@....com
Cc: iommu@...ts.linux.dev,
linux-kernel@...r.kernel.org,
"Dr. David Alan Gilbert" <linux@...blig.org>
Subject: [PATCH] iommu/vt-d: Remove unused dmar_msi_read
From: "Dr. David Alan Gilbert" <linux@...blig.org>
dmar_msi_read() has been unused since 2022 in
commit cf8e8658100d ("arch: Remove Itanium (IA-64) architecture")
Remove it.
(dmar_msi_write still exists and is used once).
Signed-off-by: Dr. David Alan Gilbert <linux@...blig.org>
---
drivers/iommu/intel/dmar.c | 13 -------------
include/linux/dmar.h | 1 -
2 files changed, 14 deletions(-)
diff --git a/drivers/iommu/intel/dmar.c b/drivers/iommu/intel/dmar.c
index eaf862e8dea1..7881d9e46622 100644
--- a/drivers/iommu/intel/dmar.c
+++ b/drivers/iommu/intel/dmar.c
@@ -1895,19 +1895,6 @@ void dmar_msi_write(int irq, struct msi_msg *msg)
raw_spin_unlock_irqrestore(&iommu->register_lock, flag);
}
-void dmar_msi_read(int irq, struct msi_msg *msg)
-{
- struct intel_iommu *iommu = irq_get_handler_data(irq);
- int reg = dmar_msi_reg(iommu, irq);
- unsigned long flag;
-
- raw_spin_lock_irqsave(&iommu->register_lock, flag);
- msg->data = readl(iommu->reg + reg + 4);
- msg->address_lo = readl(iommu->reg + reg + 8);
- msg->address_hi = readl(iommu->reg + reg + 12);
- raw_spin_unlock_irqrestore(&iommu->register_lock, flag);
-}
-
static int dmar_fault_do_one(struct intel_iommu *iommu, int type,
u8 fault_reason, u32 pasid, u16 source_id,
unsigned long long addr)
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index 499bb2c63483..692b2b445761 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -292,7 +292,6 @@ static inline void dmar_copy_shared_irte(struct irte *dst, struct irte *src)
struct irq_data;
extern void dmar_msi_unmask(struct irq_data *data);
extern void dmar_msi_mask(struct irq_data *data);
-extern void dmar_msi_read(int irq, struct msi_msg *msg);
extern void dmar_msi_write(int irq, struct msi_msg *msg);
extern int dmar_set_interrupt(struct intel_iommu *iommu);
extern irqreturn_t dmar_fault(int irq, void *dev_id);
--
2.47.0
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