[xen staging] xen: Adjust break/fallthrough statements

[patchbot@xxxxxxx]

commit 70c47ec5d65fa985ef7becd74b2d7b6d744b4c97
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Fri Feb 20 15:46:26 2026 +0000
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Wed Feb 25 16:06:04 2026 +0000

    xen: Adjust break/fallthrough statements
    
    sh_destroy_shadow() has a spelling of fallthrough which doesn't match the
    permitted pattern.  Convert it to a real fallthrough (psedo)keyword.
    
    Elsewhere, insert breaks at the end of the default statements.
    
    No functional change.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
    Reviewed-by: Michal Orzel <michal.orzel@xxxxxxx>
---
 xen/arch/arm/pci/pci-access.c     | 2 ++
 xen/arch/arm/pci/pci-designware.c | 2 ++
 xen/arch/arm/tee/optee.c          | 1 +
 xen/arch/x86/mm/shadow/common.c   | 2 +-
 4 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/xen/arch/arm/pci/pci-access.c b/xen/arch/arm/pci/pci-access.c
index c0533c00c9..2b23d552bb 100644
--- a/xen/arch/arm/pci/pci-access.c
+++ b/xen/arch/arm/pci/pci-access.c
@@ -63,6 +63,7 @@ int pci_generic_config_read(struct pci_host_bridge *bridge, 
pci_sbdf_t sbdf,
         break;
     default:
         ASSERT_UNREACHABLE();
+        break;
     }
 
     return 0;
@@ -89,6 +90,7 @@ int pci_generic_config_write(struct pci_host_bridge *bridge, 
pci_sbdf_t sbdf,
         break;
     default:
         ASSERT_UNREACHABLE();
+        break;
     }
 
     return 0;
diff --git a/xen/arch/arm/pci/pci-designware.c 
b/xen/arch/arm/pci/pci-designware.c
index 6b85213f63..902da19e8c 100644
--- a/xen/arch/arm/pci/pci-designware.c
+++ b/xen/arch/arm/pci/pci-designware.c
@@ -48,6 +48,7 @@ static int dw_pcie_read(void __iomem *addr, unsigned int len, 
uint32_t *val)
         break;
     default:
         ASSERT_UNREACHABLE();
+        break;
     }
 
     return 0;
@@ -71,6 +72,7 @@ static int dw_pcie_write(void __iomem *addr, unsigned int 
len, uint32_t val)
         break;
     default:
         ASSERT_UNREACHABLE();
+        break;
     }
 
     return 0;
diff --git a/xen/arch/arm/tee/optee.c b/xen/arch/arm/tee/optee.c
index 699e8d5368..f719d9d767 100644
--- a/xen/arch/arm/tee/optee.c
+++ b/xen/arch/arm/tee/optee.c
@@ -1206,6 +1206,7 @@ static void do_call_with_arg(struct optee_domain *ctx,
     default:
         /* Free any temporary shared buffers */
         free_shm_buffers(ctx, call->xen_arg);
+        break;
     }
 
     put_std_call(ctx, call);
diff --git a/xen/arch/x86/mm/shadow/common.c b/xen/arch/x86/mm/shadow/common.c
index e07ba6d5a7..dd2d04d049 100644
--- a/xen/arch/x86/mm/shadow/common.c
+++ b/xen/arch/x86/mm/shadow/common.c
@@ -1213,7 +1213,7 @@ void sh_destroy_shadow(struct domain *d, mfn_t smfn)
 #ifdef CONFIG_PV32
     case SH_type_l2h_64_shadow:
         ASSERT(is_pv_32bit_domain(d));
-        /* Fall through... */
+        fallthrough;
 #endif
     case SH_type_l2_64_shadow:
         SHADOW_INTERNAL_NAME(sh_destroy_l2_shadow, 4)(d, smfn);
--
generated by git-patchbot for /home/xen/git/xen.git#staging