There are scenario when the BindingStop service of PartitionDxe driver be
re-entered.
An example will be ejecting a DVD from a SATA DVDROM and then run
"reconnect -r" under shell. In this specific case, part of the calling
stack will be:
PartitionDriverBindingStop() (PartitionDxe) ->
Stop first child handle (PartitionDxe) ->
ScsiDiskFlushBlocksEx() (ScsiDiskDxe) ->
A media change is detected (ScsiDiskDxe) ->
Reinstall of BlockIO(2) protocols (ScsiDiskDxe) ->
Entering PartitionDriverBindingStop() again (PartitionDxe) ->
Potential risk of referencing already stopped child handle (PartitionDxe)
...
The current code has potential issue of referencing of already stopped
child handle. This commit adds re-entry handling logic to resolve such
issue.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
The call in ProbeMediaStatus() to the ReadDisk() function of the
EFI_DISK_IO_PROTOCOL interface implemented in DiskIoDxe/DiskIo.c
crashed in DiskIo2ReadWriteDisk() because of the NULL value of
the destination buffer pointer.
Pass the address of a buffer in the stack instead of a NULL
pointer.
In addition to avoiding the crash, that way, the media probe does not
depend anymore on the way the EFI_DISK_IO_PROTOCOL implementation deals
with a NULL value of the destination buffer pointer as the UEFI
specification does not specify the expected behaviour.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ronald Cron <Ronald.Cron@arm.com>
Reviewed-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17859 6f19259b-4bc3-4df7-8a09-765794883524
1. DiskIo2 shouldn't signal the event when the *Ex interface returns failure status per the UEFI spec.
2. PartitionDxe should close DiskIo2 protocol when error happens in DriverBindingStart() otherwise Fat driver cannot open the DiskIo2 BY_DRIVER.
3. PartitionDxe should create event using TPL_NOTIFY instead of TPL_CALLBACK otherwise asynchronous FileIo may be blocked.
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14680 6f19259b-4bc3-4df7-8a09-765794883524
Change DiskIoDxe to produce DiskIo2 protocol when the BlockIo2 protocol is available.
Change PartitionDxe to produce BlockIo2 protocol based on DiskIo2 protocol instead of BlockIo2 protocol.
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Kinney Michael <michael.d.kinney@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14570 6f19259b-4bc3-4df7-8a09-765794883524
Let the driver binding version of Partition driver be higher than that of Fat driver to make sure the DriverBindingStart() of the Partition driver gets run before that of Fat driver so that all the partitions can be recognized.
Signed-off-by: niruiyu
Reviewed-by: erictian
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12528 6f19259b-4bc3-4df7-8a09-765794883524
Fixed NULL pointer reference of BlockIo2.Media in partition code. This resulted
in the interrupt vector table being corrupted in a legacy (CSM) based system.
Signed-off-by: geekboy15a
Reviewed-by: mdkinney
Reviewed-by: niruiyu
Reviewed-by: jljusten
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11711 6f19259b-4bc3-4df7-8a09-765794883524
The others changes include:
a. Check RemainingDevicePath at beginning of Supported(), make sure it has been verified before Start() is called.
b. Check IO protocol firstly rather than EfiDevicePathProtocolGuid, reduce the times entering into Start() function because EfiDevicePathProtocolGuid existed on most of handle.
2. roll back serial drivers not to create child device, if the device speicifed by remainingdevicepath cannot find in the created devices list.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9267 6f19259b-4bc3-4df7-8a09-765794883524
Hao Wu
Ronald Cron
Sergey Isakov
Ruiyu Ni
qianouyang
niruiyu
geekboy15a
erictian
hhtian
vanjeff
qhuang8
eric_tian
gikidy