[edk2-devel] [PATCH v1 2/2] MdeModulePkg/Bus/Pci/PciHostBridgeDxe: Fix MISSING_BREAK Coverity issue

[Ranbir Singh]

From: Ranbir Singh <Ranbir.Singh3 at Dell.com>

The function SubmitResources has a switch-case code in which the
case ACPI_ADDRESS_SPACE_TYPE_MEM: which falls through to
case ACPI_ADDRESS_SPACE_TYPE_IO: if there is no scenario of
return EFI_INVALID_PARAMETER;

While this may be intentional, it is not evident to any general code
reader as well as any static analyzer tool. Just adding

    // No break; here as this is an intentional fallthrough.

as comment in between makes any reader as well as Coverity happy.

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4212

Cc: Hao A Wu <hao.a.wu at intel.com>
Cc: Ray Ni <ray.ni at intel.com>
Co-authored-by: Veeresh Sangolli <veeresh.sangolli at dellteam.com>
Signed-off-by: Ranbir Singh <Ranbir.Singh3 at Dell.com>
Signed-off-by: Ranbir Singh <rsingh at ventanamicro.com>
---
 MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c b/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c
index 519e1369f85e..3bd91e2787fd 100644
--- a/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c
+++ b/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c
@@ -1531,6 +1531,10 @@ SubmitResources (
               return EFI_INVALID_PARAMETER;
             }
 
+            //
+            // No break; here as this is an intentional fall through.
+            //
+
           case ACPI_ADDRESS_SPACE_TYPE_IO:
             //
             // Check aligment, it should be of the form 2^n-1
-- 
2.34.1



-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#106998): https://edk2.groups.io/g/devel/message/106998
Mute This Topic: https://groups.io/mt/100212113/1813853
Group Owner: devel+owner at edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [edk2-devel-archive at redhat.com]
-=-=-=-=-=-=-=-=-=-=-=-