iommu/amd: Remove the unused struct amd_ir_data.ref

Since the amd_iommu_update_ga() has been switched to use the
modify_irte_ga() helper function to update the IRTE, the parameter
is no longer needed.

Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Suggested-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Link: https://lore.kernel.org/r/20230530141137.14376-3-suravee.suthikulpanit@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

Author: ssuthiku-amd

drivers/iommu/amd/amd_iommu_types.h

@@ -1001,7 +1001,6 @@ struct amd_ir_data {
 	struct irq_2_irte irq_2_irte;
 	struct msi_msg msi_entry;
 	void *entry;    /* Pointer to union irte or struct irte_ga */
-	void *ref;      /* Pointer to the actual irte */
 
 	/**
 	 * Store information for activate/de-activate

drivers/iommu/amd/iommu.c

@@ -3001,7 +3001,7 @@ static int alloc_irq_index(struct amd_iommu *iommu, u16 devid, int count,
 }
 
 static int modify_irte_ga(struct amd_iommu *iommu, u16 devid, int index,
-			  struct irte_ga *irte, struct amd_ir_data *data)
+			  struct irte_ga *irte)
 {
 	bool ret;
 	struct irq_remap_table *table;
@@ -3028,9 +3028,6 @@ static int modify_irte_ga(struct amd_iommu *iommu, u16 devid, int index,
 	 */
 	WARN_ON(!ret);
 
-	if (data)
-		data->ref = entry;
-
 	raw_spin_unlock_irqrestore(&table->lock, flags);
 
 	iommu_flush_irt(iommu, devid);
@@ -3119,7 +3116,7 @@ static void irte_ga_activate(struct amd_iommu *iommu, void *entry, u16 devid, u1
 	struct irte_ga *irte = (struct irte_ga *) entry;
 
 	irte->lo.fields_remap.valid = 1;
-	modify_irte_ga(iommu, devid, index, irte, NULL);
+	modify_irte_ga(iommu, devid, index, irte);
 }
 
 static void irte_deactivate(struct amd_iommu *iommu, void *entry, u16 devid, u16 index)
@@ -3135,7 +3132,7 @@ static void irte_ga_deactivate(struct amd_iommu *iommu, void *entry, u16 devid,
 	struct irte_ga *irte = (struct irte_ga *) entry;
 
 	irte->lo.fields_remap.valid = 0;
-	modify_irte_ga(iommu, devid, index, irte, NULL);
+	modify_irte_ga(iommu, devid, index, irte);
 }
 
 static void irte_set_affinity(struct amd_iommu *iommu, void *entry, u16 devid, u16 index,
@@ -3159,7 +3156,7 @@ static void irte_ga_set_affinity(struct amd_iommu *iommu, void *entry, u16 devid
 					APICID_TO_IRTE_DEST_LO(dest_apicid);
 		irte->hi.fields.destination =
 					APICID_TO_IRTE_DEST_HI(dest_apicid);
-		modify_irte_ga(iommu, devid, index, irte, NULL);
+		modify_irte_ga(iommu, devid, index, irte);
 	}
 }
 
@@ -3510,7 +3507,7 @@ int amd_iommu_activate_guest_mode(void *data)
 	entry->lo.fields_vapic.ga_tag      = ir_data->ga_tag;
 
 	return modify_irte_ga(ir_data->iommu, ir_data->irq_2_irte.devid,
-			      ir_data->irq_2_irte.index, entry, ir_data);
+			      ir_data->irq_2_irte.index, entry);
 }
 EXPORT_SYMBOL(amd_iommu_activate_guest_mode);
 
@@ -3540,7 +3537,7 @@ int amd_iommu_deactivate_guest_mode(void *data)
 				APICID_TO_IRTE_DEST_HI(cfg->dest_apicid);
 
 	return modify_irte_ga(ir_data->iommu, ir_data->irq_2_irte.devid,
-			      ir_data->irq_2_irte.index, entry, ir_data);
+			      ir_data->irq_2_irte.index, entry);
 }
 EXPORT_SYMBOL(amd_iommu_deactivate_guest_mode);
 
@@ -3721,7 +3718,7 @@ int amd_iommu_update_ga(int cpu, bool is_run, void *data)
 	entry->lo.fields_vapic.is_run = is_run;
 
 	return modify_irte_ga(ir_data->iommu, ir_data->irq_2_irte.devid,
-			      ir_data->irq_2_irte.index, entry, ir_data);
+			      ir_data->irq_2_irte.index, entry);
 }
 EXPORT_SYMBOL(amd_iommu_update_ga);
 #endif