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From: Ruiyu Ni <ruiyu.ni@intel.com>
To: edk2-devel@lists.01.org
Cc: Star Zeng <star.zeng@intel.com>
Subject: [PATCH] MdeModulePkg/UsbMass: Fix USB key write failure
Date: Tue, 23 Oct 2018 10:26:30 +0800	[thread overview]
Message-ID: <20181023022630.121580-1-ruiyu.ni@intel.com> (raw)

Commit e59db6a732dbbb064b1e39a288a25edc90adac5d
* MdeModulePkg/UsbMass: Merge UsbBoot(Read|Write)Blocks(16)
introduces a bug that causes writing to USB key always fails.

When that patch is verified, only reading was verified.

The root cause is when the writing operation is performed,
the data direction EfiUsbDataIn is wrongly used. Instead, it
should be EfiUsbDataOut.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
---
 MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.c b/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.c
index c35c7bdc12..69e2252134 100644
--- a/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.c
+++ b/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.c
@@ -861,7 +861,7 @@ UsbBootReadWriteBlocks (
                UsbMass,
                &Cmd,
                (UINT8) sizeof (USB_BOOT_READ_WRITE_10_CMD),
-               EfiUsbDataIn,
+               Write ? EfiUsbDataOut : EfiUsbDataIn,
                Buffer,
                ByteSize,
                Timeout
@@ -941,7 +941,7 @@ UsbBootReadWriteBlocks16 (
                UsbMass,
                Cmd,
                (UINT8) sizeof (Cmd),
-               EfiUsbDataIn,
+               Write ? EfiUsbDataOut : EfiUsbDataIn,
                Buffer,
                ByteSize,
                Timeout
-- 
2.16.1.windows.1



             reply	other threads:[~2018-10-23  2:25 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-23  2:26 Ruiyu Ni [this message]
2018-10-23  2:26 ` [PATCH] MdeModulePkg/UsbMass: Fix USB key write failure Zeng, Star

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