[edk2-devel] [edk2-platforms][PATCH 2/4] RPi: fix MmcTransferBlock (writes) regression for eMMC

Andrei Warkentin andrey.warkentin at gmail.com
Thu Apr 30 09:26:50 UTC 2020


Way back when I added write block validation (https://github.com/andreiw/RaspberryPiPkg/commit/bdea35dc3f1652bf7b17505a20a5f52f7fde9707),
I had screwed the logic up breaking eMMC.

This starts to matter on the CM3, which has eMMC.

Signed-off-by: Andrei Warkentin <andrey.warkentin at gmail.com>
---
 Platform/RaspberryPi/Drivers/MmcDxe/MmcBlockIo.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Platform/RaspberryPi/Drivers/MmcDxe/MmcBlockIo.c b/Platform/RaspberryPi/Drivers/MmcDxe/MmcBlockIo.c
index 29a9fd7d..8a2f7f42 100644
--- a/Platform/RaspberryPi/Drivers/MmcDxe/MmcBlockIo.c
+++ b/Platform/RaspberryPi/Drivers/MmcDxe/MmcBlockIo.c
@@ -47,6 +47,7 @@ ValidateWrittenBlockCount (
     /*
      * Not on MMC.
      */
+    *TransferredBlocks = Count;
     return EFI_SUCCESS;
   }
 
-- 
2.17.1


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