[edk2-devel] [PATCH] MdeModulePkg/UfsPassThru : Fix UFS flag read from Query Resp UPIU
Agrawal, Sachin
sachin.agrawal at intel.com
Mon Sep 23 11:48:17 UTC 2019
As per UFS spec, flag value is stored in the 'last byte' of value
field. Existing code is attempting to read first byte.
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2208
Test: Verified the Fix by sending command to set fPowerOnWPEn flag
and then reading it to verify the set value.
Cc: Hao A Wu <hao.a.wu at intel.com>
Cc: Ray Ni <ray.ni at intel.com>
Signed-off-by: Sachin Agrawal <sachin.agrawal at intel.com>
---
MdeModulePkg/Bus/Ufs/UfsBlockIoPei/UfsHci.c | 5 ++++-
MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThruHci.c | 5 ++++-
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/MdeModulePkg/Bus/Ufs/UfsBlockIoPei/UfsHci.c b/MdeModulePkg/Bus/Ufs/UfsBlockIoPei/UfsHci.c
index e8ef0c2a7a..e450f6f49d 100644
--- a/MdeModulePkg/Bus/Ufs/UfsBlockIoPei/UfsHci.c
+++ b/MdeModulePkg/Bus/Ufs/UfsBlockIoPei/UfsHci.c
@@ -977,7 +977,10 @@ UfsRwFlags (
}
if (Trd->Ocs == 0) {
- *Value = (UINT8)QueryResp->Tsf.Value;
+ //
+ // The 'FLAG VALUE' field is at byte offset 3 of QueryResp->Tsf.Value
+ //
+ *Value = *((UINT8*)&(QueryResp->Tsf.Value) + 3);
} else {
Status = EFI_DEVICE_ERROR;
}
diff --git a/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThruHci.c b/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThruHci.c
index 0b95e7dddd..93ac958f65 100644
--- a/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThruHci.c
+++ b/MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThruHci.c
@@ -863,7 +863,10 @@ UfsGetReturnDataFromQueryResponse (
case UtpQueryFuncOpcodeSetFlag:
case UtpQueryFuncOpcodeClrFlag:
case UtpQueryFuncOpcodeTogFlag:
- CopyMem (Packet->DataBuffer, &QueryResp->Tsf.Value, sizeof (UINT8));
+ //
+ // The 'FLAG VALUE' field is at byte offset 3 of QueryResp->Tsf.Value
+ //
+ *((UINT8*)(Packet->DataBuffer)) = *((UINT8*)&(QueryResp->Tsf.Value) + 3);
break;
case UtpQueryFuncOpcodeRdAttr:
case UtpQueryFuncOpcodeWrAttr:
--
2.14.3.windows.1
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