Fix a bug in the SCSI Bus driver due to which some SCSI devices can not be discovered...

///
/// Standard INQUIRY data format
///
typedef struct {
  UINT8 Peripheral_Type : 5;
  UINT8 Peripheral_Qualifier : 3;
  UINT8 DeviceType_Modifier : 7;
  UINT8 Rmb : 1;
  UINT8 Version;
  UINT8 Response_Data_Format;
  UINT8 Addnl_Length;
  UINT8 Reserved_5_95[95 - 5 + 1];
} EFI_SCSI_INQUIRY_DATA;

is longer than 36 bytes and EFI_BAD_BUFFER_SIZE may be returned if the actual inquiry data is less than that of EFI_SCSI_INQUIRY_DATA.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8329 6f19259b-4bc3-4df7-8a09-765794883524

diff --git a/MdeModulePkg/Bus/Scsi/ScsiBusDxe/ScsiBus.c b/MdeModulePkg/Bus/Scsi/ScsiBusDxe/ScsiBus.c
index 4d8eff6eee88231a5be9d5010caef1d5c5c7e549..2a765460b26a5e6709810627ccc0f95beb9e0dc7 100644 (file)
--- a/MdeModulePkg/Bus/Scsi/ScsiBusDxe/ScsiBus.c
+++ b/MdeModulePkg/Bus/Scsi/ScsiBusDxe/ScsiBus.c
@@ -1123,7 +1123,7 @@ DiscoverScsiDevice (
             &InquiryDataLength,\r
             FALSE\r
             );\r
-  if (EFI_ERROR (Status)) {\r
+  if (EFI_ERROR (Status) && Status != EFI_BAD_BUFFER_SIZE) {\r
     return FALSE;\r
   }\r
   //\r