When a BlockIO2 request is sent to a SCSI device, the callstack can be
shown as the following diagram:
|-------------------| Create |-------------------|
| BlockIO2 |--------->| BlockIO2 Event |
|-------------------| |-------------------|
| ^
| | Signal
v |
|-------------------| Create |-------------------|
| ScsiDiskDxe |--------->| ScsiDiskDxe Event |
|-------------------| |-------------------|
| ^
| | Signal
v |
|-------------------| Create |-------------------|
| UefiScsiLib |--------->| UefiScsiLib Event |
|-------------------| |-------------------|
| ^
| | Signal
v |
|-------------------| Create |-------------------|
| ScsiBusDxe |--------->| ScsiBusDxe Event |
|-------------------| |-------------------|
| ^
| | Signal
v |
|-------------------| |
| PassThru |---------------------
|-------------------| Async Scsi command completes
UEFI spec requires that the BlockIO2 event will not be signaled when error
status is returned. Therefore, this patch series will modify the behavior
of ScsiDiskDxe, UefiScsiLib and ScsiBusDxe to follow the spec.
Hao Wu (3):
MdeModulePkg ScsiBusDxe: Only signal caller event when PassThru()
succeeds
MdePkg UefiScsiLib: Close event when SCSI command fails
MdeModulePkg ScsiDiskDxe: Close event when SCSI command fails
MdeModulePkg/Bus/Scsi/ScsiBusDxe/ScsiBus.c | 5 +--
MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c | 24 ++++++++++++++
MdePkg/Library/UefiScsiLib/UefiScsiLib.c | 48 +++++++++++++++++++++++++---
3 files changed, 71 insertions(+), 6 deletions(-)
--
1.9.5.msysgit.0
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