Commit 95e2eaf5 authored by Dr. David Alan Gilbert's avatar Dr. David Alan Gilbert Committed by Joerg Roedel
Browse files

iommu/vt-d: Remove unused dmar_msi_read 



dmar_msi_read() has been unused since 2022 in
commit cf8e8658 ("arch: Remove Itanium (IA-64) architecture")

Remove it.

(dmar_msi_write still exists and is used once).

Signed-off-by: default avatarDr. David Alan Gilbert <linux@treblig.org>
Link: https://lore.kernel.org/r/20241022002702.302728-1-linux@treblig.org


Signed-off-by: default avatarLu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 6d8bac09

drivers/iommu/intel/dmar.c

+0 −13
Original line number Diff line number Diff line
@@ -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)

include/linux/dmar.h

+0 −1
Original line number Diff line number Diff line
@@ -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);