From e8a50d1b4469fab67323dfa792bca5fc385b179f Mon Sep 17 00:00:00 2001
From: erictian <erictian@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Fri, 4 Jan 2013 05:58:24 +0000
Subject: [PATCH] MdeModulePkg/AtaAtapiPassThru: Not set AhciCmdC bit of
 CommandList when doing transaction as AHCI spec say this bit is only used to
 do soft reset

Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Elvin Li <elvin.li@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14027 6f19259b-4bc3-4df7-8a09-765794883524
---
 MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.c b/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.c
index 190ab799f1..2001175fe7 100644
--- a/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.c
+++ b/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AhciMode.c
@@ -548,7 +548,6 @@ AhciBuildCommand (
 
     CommandList->AhciCmdA = 1;
     CommandList->AhciCmdP = 1;
-    CommandList->AhciCmdC = (DataLength == 0) ? 1 : 0;
 
     AhciOrReg (PciIo, Offset, (EFI_AHCI_PORT_CMD_DLAE | EFI_AHCI_PORT_CMD_ATAPI));
   } else {