MdeModulePkg/PciBus: Change switch-case to if-else to fix EBC build

[edk2] [PATCH] MdeModulePkg/PciBus: Change switch-case to if-else to fix EBC build

Posted by Ruiyu Ni 7 years, 11 months ago

EBC compiler doesn't treat EFI_xxx as constant due to these macros
are UINT64 type in 64bit env and UINT32 type in 32bit env.
So it reports error when "case EFI_xxx" is used.
The patch changes to use if-else to fix EBC build failure.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
---
 MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c | 20 +++++++-------------
 1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c
index dc1086606f..976496379a 100644
--- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c
+++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c
@@ -1154,19 +1154,13 @@ PciScanBus (
 
               FreePool (Descriptors);
 
-              switch (Status) {
-                case EFI_SUCCESS:
-                  BusPadding = TRUE;
-                  break;
-
-                case EFI_NOT_FOUND:
-                  //
-                  // no bus number padding requested
-                  //
-                  break;
-
-                default:
-                  return Status;
+              if (!EFI_ERROR (Status)) {
+                BusPadding = TRUE;
+              } else if (Status != EFI_NOT_FOUND) {
+                //
+                // EFI_NOT_FOUND is not a real error. It indicates no bus number padding requested.
+                //
+                return Status;
               }
             }
           }
-- 
2.15.1.windows.2

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Re: [edk2] [PATCH] MdeModulePkg/PciBus: Change switch-case to if-else to fix EBC build

Posted by Laszlo Ersek 7 years, 11 months ago

On 01/09/18 06:53, Ruiyu Ni wrote:
> EBC compiler doesn't treat EFI_xxx as constant due to these macros
> are UINT64 type in 64bit env and UINT32 type in 32bit env.
> So it reports error when "case EFI_xxx" is used.
> The patch changes to use if-else to fix EBC build failure.
> 
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
> Cc: Laszlo Ersek <lersek@redhat.com>
> ---
>  MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c | 20 +++++++-------------
>  1 file changed, 7 insertions(+), 13 deletions(-)
> 
> diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c
> index dc1086606f..976496379a 100644
> --- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c
> +++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c
> @@ -1154,19 +1154,13 @@ PciScanBus (
>  
>                FreePool (Descriptors);
>  
> -              switch (Status) {
> -                case EFI_SUCCESS:
> -                  BusPadding = TRUE;
> -                  break;
> -
> -                case EFI_NOT_FOUND:
> -                  //
> -                  // no bus number padding requested
> -                  //
> -                  break;
> -
> -                default:
> -                  return Status;
> +              if (!EFI_ERROR (Status)) {
> +                BusPadding = TRUE;
> +              } else if (Status != EFI_NOT_FOUND) {
> +                //
> +                // EFI_NOT_FOUND is not a real error. It indicates no bus number padding requested.
> +                //
> +                return Status;
>                }
>              }
>            }
> 

Reviewed-by: Laszlo Ersek <lersek@redhat.com>
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