[RFC PATCH v3 42/78] hw/i386: add fallthrough pseudo-keyword

[Emmanouil Pitsidianakis]

In preparation of raising -Wimplicit-fallthrough to 5, replace all
fall-through comments with the fallthrough attribute pseudo-keyword.

Signed-off-by: Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
---
 hw/i386/intel_iommu.c    | 4 ++--
 hw/i386/kvm/xen_evtchn.c | 2 +-
 hw/i386/x86.c            | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 2c832ab68b..bdb2ea3ac5 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -2108,7 +2108,7 @@ static uint64_t 
vtd_context_cache_invalidate(IntelIOMMUState *s, uint64_t val)
 
     switch (type) {
     case VTD_CCMD_DOMAIN_INVL:
-        /* Fall through */
+        fallthrough;
     case VTD_CCMD_GLOBAL_INVL:
         caig = VTD_CCMD_GLOBAL_INVL_A;
         vtd_context_global_invalidate(s);
@@ -2525,7 +2525,7 @@ static bool 
vtd_process_context_cache_desc(IntelIOMMUState *s,
     case VTD_INV_DESC_CC_DOMAIN:
         trace_vtd_inv_desc_cc_domain(
             (uint16_t)VTD_INV_DESC_CC_DID(inv_desc->lo));
-        /* Fall through */
+        fallthrough;
     case VTD_INV_DESC_CC_GLOBAL:
         vtd_context_global_invalidate(s);
         break;
diff --git a/hw/i386/kvm/xen_evtchn.c b/hw/i386/kvm/xen_evtchn.c
index a731738411..d15e324f6e 100644
--- a/hw/i386/kvm/xen_evtchn.c
+++ b/hw/i386/kvm/xen_evtchn.c
@@ -2068,7 +2068,7 @@ int xen_be_evtchn_bind_interdomain(struct 
xenevtchn_handle *xc, uint32_t domid,
             }
             break;
         }
-        /* fall through */
+        fallthrough;
 
     case EVTCHNSTAT_unbound:
         be_port = find_be_port(s, xc);
diff --git a/hw/i386/x86.c b/hw/i386/x86.c
index b3d054889b..c1fd0a966a 100644
--- a/hw/i386/x86.c
+++ b/hw/i386/x86.c
@@ -605,7 +605,7 @@ void gsi_handler(void *opaque, int n, int level)
             /* Under KVM, Kernel will forward to both PIC and IOAPIC */
             qemu_set_irq(s->i8259_irq[n], level);
         }
-        /* fall through */
+        fallthrough;
     case ISA_NUM_IRQS ... IOAPIC_NUM_PINS - 1:
 #ifdef CONFIG_XEN_EMU
         /*
-- 
2.39.2