subject:"\[edk2\-devel\] \[PATCH EDK2 v1 1\/1\] MdeModulePkg\/Xhci\: Fix TRT when data length is 0"

Re: [edk2-devel] [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix TRT when data length is 0

2021-06-02 Thread Wu, Hao A

Patch pushed via:
PR - https://github.com/tianocore/edk2/pull/1683
Commit - 
https://github.com/tianocore/edk2/commit/b5379899b38ed84561db6dc07dc4641a049ae238

Best Regards,
Hao Wu

> -Original Message-
> From: devel@edk2.groups.io  On Behalf Of Wu, Hao
> A
> Sent: Monday, May 31, 2021 11:20 AM
> To: devel@edk2.groups.io; xiewen...@huawei.com; Wang, Jian J
> ; Ni, Ray 
> Cc: songdongku...@huawei.com
> Subject: Re: [edk2-devel] [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix TRT
> when data length is 0
> 
> > -Original Message-
> > From: devel@edk2.groups.io  On Behalf Of
> > wenyi,xie via groups.io
> > Sent: Monday, May 31, 2021 11:18 AM
> > To: Wu, Hao A ; devel@edk2.groups.io; Wang, Jian J
> > ; Ni, Ray 
> > Cc: songdongku...@huawei.com
> > Subject: Re: [edk2-devel] [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix
> > TRT when data length is 0
> >
> >
> >
> > On 2021/5/31 9:44, Wu, Hao A wrote:
> > >> -Original Message-
> > >> From: Wenyi Xie 
> > >> Sent: Thursday, May 27, 2021 8:04 PM
> > >> To: devel@edk2.groups.io; Wang, Jian J ; Wu,
> > >> Hao A ; Ni, Ray 
> > >> Cc: songdongku...@huawei.com; xiewen...@huawei.com
> > >> Subject: [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix TRT when data
> > >> length is 0
> > >>
> > >> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3418
> > >>
> > >> According to xhci spec, at USB packet level, a Control Transfer
> > >> consists of multiple transactions partitioned into stages: a setup
> > >> stage, an optional data stage, and a terminating status stage. If
> > >> Data Stage does not exist, the Transfer Type flag(TRT) should be No
> > >> Data
> > Stage.
> > >> So if data length equals to 0, TRT is set to 0.
> > >
> > >
> > > Thanks for the patch, the changes are good to me.
> > > Could you help to provide the information on what kind of test has
> > > been
> > performed for this patch?
> > >
> > > Best Regards,
> > > Hao Wu
> > >
> > Hi, Wu Hao
> >
> > We use an AArch64 platform to test this patch. After merging this
> > patch, during USB enumeration, Control Transfer with or without Data
> > Stage works well. Our platform dsc only include XhciDxe.
> 
> 
> Thanks a lot.
> Reviewed-by: Hao A Wu 
> 
> I will wait for a couple of days to see if others have additional comments.
> 
> Best Regards,
> Hao Wu
> 
> 
> >
> > Thanks
> > Wenyi
> > >
> > >>
> > >> Cc: Jian J Wang 
> > >> Cc: Hao A Wu 
> > >> Cc: Ray Ni 
> > >> Signed-off-by: Wenyi Xie 
> > >> ---
> > >>  MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c | 13 +
> > >> MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c | 13 +
> > >>  2 files changed, 18 insertions(+), 8 deletions(-)
> > >>
> > >> diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
> > >> b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
> > >> index dc36945962a0..7cbc9a8502ea 100644
> > >> --- a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
> > >> +++ b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
> > >> @@ -298,10 +298,15 @@ XhcCreateTransferTrb (
> > >>TrbStart->TrbCtrSetup.IOC   = 1;
> > >>TrbStart->TrbCtrSetup.IDT   = 1;
> > >>TrbStart->TrbCtrSetup.Type  = TRB_TYPE_SETUP_STAGE;
> > >> -  if (Urb->Ep.Direction == EfiUsbDataIn) {
> > >> -TrbStart->TrbCtrSetup.TRT = 3;
> > >> -  } else if (Urb->Ep.Direction == EfiUsbDataOut) {
> > >> -TrbStart->TrbCtrSetup.TRT = 2;
> > >> +  if (Urb->DataLen > 0) {
> > >> +if (Urb->Ep.Direction == EfiUsbDataIn) {
> > >> +  TrbStart->TrbCtrSetup.TRT = 3;
> > >> +} else if (Urb->Ep.Direction == EfiUsbDataOut) {
> > >> +  TrbStart->TrbCtrSetup.TRT = 2;
> > >> +} else {
> > >> +  DEBUG ((DEBUG_ERROR, "XhcCreateTransferTrb: Direction
> > >> + sholud be
> > >> IN or OUT when Data exists!\n"));
> > >> +  ASSERT (FALSE);
> > >> +}
> > >>} else {
> > >>  TrbStart->TrbCtrSetup.TRT = 0;
> > >>}
> > >> diff --git a/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
> >

Re: [edk2-devel] [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix TRT when data length is 0

2021-05-30 Thread Wu, Hao A

> -Original Message-
> From: devel@edk2.groups.io  On Behalf Of
> wenyi,xie via groups.io
> Sent: Monday, May 31, 2021 11:18 AM
> To: Wu, Hao A ; devel@edk2.groups.io; Wang, Jian J
> ; Ni, Ray 
> Cc: songdongku...@huawei.com
> Subject: Re: [edk2-devel] [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix TRT
> when data length is 0
> 
> 
> 
> On 2021/5/31 9:44, Wu, Hao A wrote:
> >> -Original Message-
> >> From: Wenyi Xie 
> >> Sent: Thursday, May 27, 2021 8:04 PM
> >> To: devel@edk2.groups.io; Wang, Jian J ; Wu,
> >> Hao A ; Ni, Ray 
> >> Cc: songdongku...@huawei.com; xiewen...@huawei.com
> >> Subject: [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix TRT when data
> >> length is 0
> >>
> >> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3418
> >>
> >> According to xhci spec, at USB packet level, a Control Transfer
> >> consists of multiple transactions partitioned into stages: a setup
> >> stage, an optional data stage, and a terminating status stage. If
> >> Data Stage does not exist, the Transfer Type flag(TRT) should be No Data
> Stage.
> >> So if data length equals to 0, TRT is set to 0.
> >
> >
> > Thanks for the patch, the changes are good to me.
> > Could you help to provide the information on what kind of test has been
> performed for this patch?
> >
> > Best Regards,
> > Hao Wu
> >
> Hi, Wu Hao
> 
> We use an AArch64 platform to test this patch. After merging this patch,
> during USB enumeration, Control Transfer with or without Data Stage works
> well. Our platform dsc only include XhciDxe.


Thanks a lot.
Reviewed-by: Hao A Wu 

I will wait for a couple of days to see if others have additional comments.

Best Regards,
Hao Wu


> 
> Thanks
> Wenyi
> >
> >>
> >> Cc: Jian J Wang 
> >> Cc: Hao A Wu 
> >> Cc: Ray Ni 
> >> Signed-off-by: Wenyi Xie 
> >> ---
> >>  MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c | 13 +
> >> MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c | 13 +
> >>  2 files changed, 18 insertions(+), 8 deletions(-)
> >>
> >> diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
> >> b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
> >> index dc36945962a0..7cbc9a8502ea 100644
> >> --- a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
> >> +++ b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
> >> @@ -298,10 +298,15 @@ XhcCreateTransferTrb (
> >>TrbStart->TrbCtrSetup.IOC   = 1;
> >>TrbStart->TrbCtrSetup.IDT   = 1;
> >>TrbStart->TrbCtrSetup.Type  = TRB_TYPE_SETUP_STAGE;
> >> -  if (Urb->Ep.Direction == EfiUsbDataIn) {
> >> -TrbStart->TrbCtrSetup.TRT = 3;
> >> -  } else if (Urb->Ep.Direction == EfiUsbDataOut) {
> >> -TrbStart->TrbCtrSetup.TRT = 2;
> >> +  if (Urb->DataLen > 0) {
> >> +if (Urb->Ep.Direction == EfiUsbDataIn) {
> >> +  TrbStart->TrbCtrSetup.TRT = 3;
> >> +} else if (Urb->Ep.Direction == EfiUsbDataOut) {
> >> +  TrbStart->TrbCtrSetup.TRT = 2;
> >> +} else {
> >> +  DEBUG ((DEBUG_ERROR, "XhcCreateTransferTrb: Direction
> >> + sholud be
> >> IN or OUT when Data exists!\n"));
> >> +  ASSERT (FALSE);
> >> +}
> >>} else {
> >>  TrbStart->TrbCtrSetup.TRT = 0;
> >>}
> >> diff --git a/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
> >> b/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
> >> index 32d72ef03c2d..5b9892a1cbbb 100644
> >> --- a/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
> >> +++ b/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
> >> @@ -291,10 +291,15 @@ XhcPeiCreateTransferTrb (
> >>TrbStart->TrbCtrSetup.IOC   = 1;
> >>TrbStart->TrbCtrSetup.IDT   = 1;
> >>TrbStart->TrbCtrSetup.Type  = TRB_TYPE_SETUP_STAGE;
> >> -  if (Urb->Ep.Direction == EfiUsbDataIn) {
> >> -TrbStart->TrbCtrSetup.TRT = 3;
> >> -  } else if (Urb->Ep.Direction == EfiUsbDataOut) {
> >> -TrbStart->TrbCtrSetup.TRT = 2;
> >> +  if (Urb->DataLen > 0) {
> >> +if (Urb->Ep.Direction == EfiUsbDataIn) {
> >> +  TrbStart->TrbCtrSetup.TRT = 3;
> >> +} else if (Urb->Ep.Direction == EfiUsbDataOut) {
> >> +  TrbStart->TrbCtrSetup.TRT = 2;
> >> +} else {
> >> +  DEBUG ((DEBUG_ERROR, "XhcPeiCreateTransferTrb: Direction
> >> + sholud
> >> be IN or OUT when Data exists!\n"));
> >> +  ASSERT (FALSE);
> >> +}
> >>} else {
> >>  TrbStart->TrbCtrSetup.TRT = 0;
> >>}
> >> --
> >> 2.20.1.windows.1
> >
> > .
> >
> 
> 
> 
> 



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Re: [edk2-devel] [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix TRT when data length is 0

2021-05-30 Thread wenyi,xie via groups.io




On 2021/5/31 9:44, Wu, Hao A wrote:
>> -Original Message-
>> From: Wenyi Xie 
>> Sent: Thursday, May 27, 2021 8:04 PM
>> To: devel@edk2.groups.io; Wang, Jian J ; Wu, Hao A
>> ; Ni, Ray 
>> Cc: songdongku...@huawei.com; xiewen...@huawei.com
>> Subject: [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix TRT when data length
>> is 0
>>
>> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3418
>>
>> According to xhci spec, at USB packet level, a Control Transfer consists of
>> multiple transactions partitioned into stages: a setup stage, an optional 
>> data
>> stage, and a terminating status stage. If Data Stage does not exist, the
>> Transfer Type flag(TRT) should be No Data Stage.
>> So if data length equals to 0, TRT is set to 0.
> 
> 
> Thanks for the patch, the changes are good to me.
> Could you help to provide the information on what kind of test has been 
> performed for this patch?
> 
> Best Regards,
> Hao Wu
> 
Hi, Wu Hao

We use an AArch64 platform to test this patch. After merging this patch, during 
USB enumeration, Control Transfer with or without Data Stage
works well. Our platform dsc only include XhciDxe.

Thanks
Wenyi
> 
>>
>> Cc: Jian J Wang 
>> Cc: Hao A Wu 
>> Cc: Ray Ni 
>> Signed-off-by: Wenyi Xie 
>> ---
>>  MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c | 13 +
>> MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c | 13 +
>>  2 files changed, 18 insertions(+), 8 deletions(-)
>>
>> diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
>> b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
>> index dc36945962a0..7cbc9a8502ea 100644
>> --- a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
>> +++ b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
>> @@ -298,10 +298,15 @@ XhcCreateTransferTrb (
>>TrbStart->TrbCtrSetup.IOC   = 1;
>>TrbStart->TrbCtrSetup.IDT   = 1;
>>TrbStart->TrbCtrSetup.Type  = TRB_TYPE_SETUP_STAGE;
>> -  if (Urb->Ep.Direction == EfiUsbDataIn) {
>> -TrbStart->TrbCtrSetup.TRT = 3;
>> -  } else if (Urb->Ep.Direction == EfiUsbDataOut) {
>> -TrbStart->TrbCtrSetup.TRT = 2;
>> +  if (Urb->DataLen > 0) {
>> +if (Urb->Ep.Direction == EfiUsbDataIn) {
>> +  TrbStart->TrbCtrSetup.TRT = 3;
>> +} else if (Urb->Ep.Direction == EfiUsbDataOut) {
>> +  TrbStart->TrbCtrSetup.TRT = 2;
>> +} else {
>> +  DEBUG ((DEBUG_ERROR, "XhcCreateTransferTrb: Direction sholud be
>> IN or OUT when Data exists!\n"));
>> +  ASSERT (FALSE);
>> +}
>>} else {
>>  TrbStart->TrbCtrSetup.TRT = 0;
>>}
>> diff --git a/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
>> b/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
>> index 32d72ef03c2d..5b9892a1cbbb 100644
>> --- a/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
>> +++ b/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
>> @@ -291,10 +291,15 @@ XhcPeiCreateTransferTrb (
>>TrbStart->TrbCtrSetup.IOC   = 1;
>>TrbStart->TrbCtrSetup.IDT   = 1;
>>TrbStart->TrbCtrSetup.Type  = TRB_TYPE_SETUP_STAGE;
>> -  if (Urb->Ep.Direction == EfiUsbDataIn) {
>> -TrbStart->TrbCtrSetup.TRT = 3;
>> -  } else if (Urb->Ep.Direction == EfiUsbDataOut) {
>> -TrbStart->TrbCtrSetup.TRT = 2;
>> +  if (Urb->DataLen > 0) {
>> +if (Urb->Ep.Direction == EfiUsbDataIn) {
>> +  TrbStart->TrbCtrSetup.TRT = 3;
>> +} else if (Urb->Ep.Direction == EfiUsbDataOut) {
>> +  TrbStart->TrbCtrSetup.TRT = 2;
>> +} else {
>> +  DEBUG ((DEBUG_ERROR, "XhcPeiCreateTransferTrb: Direction sholud
>> be IN or OUT when Data exists!\n"));
>> +  ASSERT (FALSE);
>> +}
>>} else {
>>  TrbStart->TrbCtrSetup.TRT = 0;
>>}
>> --
>> 2.20.1.windows.1
> 
> .
> 


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Re: [edk2-devel] [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix TRT when data length is 0

2021-05-30 Thread Wu, Hao A

> -Original Message-
> From: Wenyi Xie 
> Sent: Thursday, May 27, 2021 8:04 PM
> To: devel@edk2.groups.io; Wang, Jian J ; Wu, Hao A
> ; Ni, Ray 
> Cc: songdongku...@huawei.com; xiewen...@huawei.com
> Subject: [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix TRT when data length
> is 0
> 
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3418
> 
> According to xhci spec, at USB packet level, a Control Transfer consists of
> multiple transactions partitioned into stages: a setup stage, an optional data
> stage, and a terminating status stage. If Data Stage does not exist, the
> Transfer Type flag(TRT) should be No Data Stage.
> So if data length equals to 0, TRT is set to 0.


Thanks for the patch, the changes are good to me.
Could you help to provide the information on what kind of test has been 
performed for this patch?

Best Regards,
Hao Wu


> 
> Cc: Jian J Wang 
> Cc: Hao A Wu 
> Cc: Ray Ni 
> Signed-off-by: Wenyi Xie 
> ---
>  MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c | 13 +
> MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c | 13 +
>  2 files changed, 18 insertions(+), 8 deletions(-)
> 
> diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
> b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
> index dc36945962a0..7cbc9a8502ea 100644
> --- a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
> +++ b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
> @@ -298,10 +298,15 @@ XhcCreateTransferTrb (
>TrbStart->TrbCtrSetup.IOC   = 1;
>TrbStart->TrbCtrSetup.IDT   = 1;
>TrbStart->TrbCtrSetup.Type  = TRB_TYPE_SETUP_STAGE;
> -  if (Urb->Ep.Direction == EfiUsbDataIn) {
> -TrbStart->TrbCtrSetup.TRT = 3;
> -  } else if (Urb->Ep.Direction == EfiUsbDataOut) {
> -TrbStart->TrbCtrSetup.TRT = 2;
> +  if (Urb->DataLen > 0) {
> +if (Urb->Ep.Direction == EfiUsbDataIn) {
> +  TrbStart->TrbCtrSetup.TRT = 3;
> +} else if (Urb->Ep.Direction == EfiUsbDataOut) {
> +  TrbStart->TrbCtrSetup.TRT = 2;
> +} else {
> +  DEBUG ((DEBUG_ERROR, "XhcCreateTransferTrb: Direction sholud be
> IN or OUT when Data exists!\n"));
> +  ASSERT (FALSE);
> +}
>} else {
>  TrbStart->TrbCtrSetup.TRT = 0;
>}
> diff --git a/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
> b/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
> index 32d72ef03c2d..5b9892a1cbbb 100644
> --- a/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
> +++ b/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
> @@ -291,10 +291,15 @@ XhcPeiCreateTransferTrb (
>TrbStart->TrbCtrSetup.IOC   = 1;
>TrbStart->TrbCtrSetup.IDT   = 1;
>TrbStart->TrbCtrSetup.Type  = TRB_TYPE_SETUP_STAGE;
> -  if (Urb->Ep.Direction == EfiUsbDataIn) {
> -TrbStart->TrbCtrSetup.TRT = 3;
> -  } else if (Urb->Ep.Direction == EfiUsbDataOut) {
> -TrbStart->TrbCtrSetup.TRT = 2;
> +  if (Urb->DataLen > 0) {
> +if (Urb->Ep.Direction == EfiUsbDataIn) {
> +  TrbStart->TrbCtrSetup.TRT = 3;
> +} else if (Urb->Ep.Direction == EfiUsbDataOut) {
> +  TrbStart->TrbCtrSetup.TRT = 2;
> +} else {
> +  DEBUG ((DEBUG_ERROR, "XhcPeiCreateTransferTrb: Direction sholud
> be IN or OUT when Data exists!\n"));
> +  ASSERT (FALSE);
> +}
>} else {
>  TrbStart->TrbCtrSetup.TRT = 0;
>}
> --
> 2.20.1.windows.1



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[edk2-devel] [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix TRT when data length is 0

2021-05-27 Thread wenyi,xie via groups.io

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3418

According to xhci spec, at USB packet level, a Control Transfer
consists of multiple transactions partitioned into stages: a
setup stage, an optional data stage, and a terminating status
stage. If Data Stage does not exist, the Transfer Type flag(TRT)
should be No Data Stage.
So if data length equals to 0, TRT is set to 0.

Cc: Jian J Wang 
Cc: Hao A Wu 
Cc: Ray Ni 
Signed-off-by: Wenyi Xie 
---
 MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c | 13 +
 MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c | 13 +
 2 files changed, 18 insertions(+), 8 deletions(-)

diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c 
b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
index dc36945962a0..7cbc9a8502ea 100644
--- a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
+++ b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
@@ -298,10 +298,15 @@ XhcCreateTransferTrb (
   TrbStart->TrbCtrSetup.IOC   = 1;
   TrbStart->TrbCtrSetup.IDT   = 1;
   TrbStart->TrbCtrSetup.Type  = TRB_TYPE_SETUP_STAGE;
-  if (Urb->Ep.Direction == EfiUsbDataIn) {
-TrbStart->TrbCtrSetup.TRT = 3;
-  } else if (Urb->Ep.Direction == EfiUsbDataOut) {
-TrbStart->TrbCtrSetup.TRT = 2;
+  if (Urb->DataLen > 0) {
+if (Urb->Ep.Direction == EfiUsbDataIn) {
+  TrbStart->TrbCtrSetup.TRT = 3;
+} else if (Urb->Ep.Direction == EfiUsbDataOut) {
+  TrbStart->TrbCtrSetup.TRT = 2;
+} else {
+  DEBUG ((DEBUG_ERROR, "XhcCreateTransferTrb: Direction sholud be IN 
or OUT when Data exists!\n"));
+  ASSERT (FALSE);
+}
   } else {
 TrbStart->TrbCtrSetup.TRT = 0;
   }
diff --git a/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c 
b/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
index 32d72ef03c2d..5b9892a1cbbb 100644
--- a/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
+++ b/MdeModulePkg/Bus/Pci/XhciPei/XhciSched.c
@@ -291,10 +291,15 @@ XhcPeiCreateTransferTrb (
   TrbStart->TrbCtrSetup.IOC   = 1;
   TrbStart->TrbCtrSetup.IDT   = 1;
   TrbStart->TrbCtrSetup.Type  = TRB_TYPE_SETUP_STAGE;
-  if (Urb->Ep.Direction == EfiUsbDataIn) {
-TrbStart->TrbCtrSetup.TRT = 3;
-  } else if (Urb->Ep.Direction == EfiUsbDataOut) {
-TrbStart->TrbCtrSetup.TRT = 2;
+  if (Urb->DataLen > 0) {
+if (Urb->Ep.Direction == EfiUsbDataIn) {
+  TrbStart->TrbCtrSetup.TRT = 3;
+} else if (Urb->Ep.Direction == EfiUsbDataOut) {
+  TrbStart->TrbCtrSetup.TRT = 2;
+} else {
+  DEBUG ((DEBUG_ERROR, "XhcPeiCreateTransferTrb: Direction sholud be 
IN or OUT when Data exists!\n"));
+  ASSERT (FALSE);
+}
   } else {
 TrbStart->TrbCtrSetup.TRT = 0;
   }
-- 
2.20.1.windows.1



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Re: [edk2-devel] [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix TRT when data length is 0

Re: [edk2-devel] [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix TRT when data length is 0

Re: [edk2-devel] [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix TRT when data length is 0

Re: [edk2-devel] [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix TRT when data length is 0

[edk2-devel] [PATCH EDK2 v1 1/1] MdeModulePkg/Xhci: Fix TRT when data length is 0

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