eliminate remaining uses of struct irq_cfg

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>

2 files changed, 6 insertions, 10 deletions

diff --git a/xen/arch/x86/io_apic.c b/xen/arch/x86/io_apic.c
index 94f151e26f..dea4316601 100644
--- a/xen/arch/x86/io_apic.c
+++ b/xen/arch/x86/io_apic.c
@@ -2279,7 +2279,6 @@ int ioapic_guest_write(unsigned long physbase, unsigned int reg, u32 val)
     int apic, pin, irq, ret, vector, pirq;
     struct IO_APIC_route_entry rte = { 0 };
     unsigned long flags;
-    struct irq_cfg *cfg;
     struct irq_desc *desc;
 
     if ( (apic = ioapic_physbase_to_id(physbase)) < 0 )
@@ -2321,7 +2320,6 @@ int ioapic_guest_write(unsigned long physbase, unsigned int reg, u32 val)
         return irq;
 
     desc = irq_to_desc(irq);
-    cfg = &desc->arch;
 
     /*
      * Since PHYSDEVOP_alloc_irq_vector is dummy, rte.vector is the pirq
@@ -2338,7 +2336,7 @@ int ioapic_guest_write(unsigned long physbase, unsigned int reg, u32 val)
         spin_lock_irqsave(&ioapic_lock, flags);
         ret = io_apic_read(apic, 0x10 + 2 * pin);
         spin_unlock_irqrestore(&ioapic_lock, flags);
-        rte.vector = cfg->vector;
+        rte.vector = desc->arch.vector;
         if ( *(u32*)&rte != ret )
             WARN_BOGUS_WRITE("old_entry=%08x pirq=%d\n%s: "
                              "Attempt to modify IO-APIC pin for in-use IRQ!\n",
@@ -2346,7 +2344,7 @@ int ioapic_guest_write(unsigned long physbase, unsigned int reg, u32 val)
         return 0;
     }
 
-    if ( cfg->vector <= 0 || cfg->vector > LAST_DYNAMIC_VECTOR ) {
+    if ( desc->arch.vector <= 0 || desc->arch.vector > LAST_DYNAMIC_VECTOR ) {
         vector = assign_irq_vector(irq);
         if ( vector < 0 )
             return vector;
@@ -2370,7 +2368,7 @@ int ioapic_guest_write(unsigned long physbase, unsigned int reg, u32 val)
     /* Mask iff level triggered. */
     rte.mask = rte.trigger;
     /* Set the vector field to the real vector! */
-    rte.vector = cfg->vector;
+    rte.vector = desc->arch.vector;
 
     SET_DEST(rte.dest.dest32, rte.dest.logical.logical_dest,
              cpu_mask_to_apicid(desc->arch.cpu_mask));
diff --git a/xen/arch/x86/irq.c b/xen/arch/x86/irq.c
index 0271be93dc..16b5792d20 100644
--- a/xen/arch/x86/irq.c
+++ b/xen/arch/x86/irq.c
@@ -285,16 +285,14 @@ void destroy_irq(unsigned int irq)
 int irq_to_vector(int irq)
 {
     int vector = -1;
-    struct irq_cfg *cfg;
 
     BUG_ON(irq >= nr_irqs || irq < 0);
 
     if (IO_APIC_IRQ(irq))
         vector = irq_vector[irq];
-    else if(MSI_IRQ(irq)) {
-        cfg = irq_cfg(irq);
-        vector = cfg->vector;
-    } else
+    else if (MSI_IRQ(irq))
+        vector = irq_to_desc(irq)->arch.vector;
+    else
         vector = LEGACY_VECTOR(irq);
 
     return vector;