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iommu/vt-d: Remove unused dmar_msi_read

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dmar_msi_read() has been unused since 2022 in
commit cf8e865810 ("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@treblig.org>
Link: https://lore.kernel.org/r/20241022002702.302728-1-linux@treblig.org
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Dr. David Alan Gilbert 2024-11-04 09:40:30 +08:00 • committed by Joerg Roedel
parent 6d8bac098e
commit 95e2eaf5b9
2 changed files with 0 additions and 14 deletions
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13
drivers/iommu/intel/dmar.c
View file

@ -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)

1
include/linux/dmar.h
View file

@ -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);