f6a683e01b
For some SCSI commands, notably INQUIRY, it's relatively common for the device to provide less data than we intended to read, and for this reason EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET makes InTransferLength and OutTransferLength read-write. Make ATAPI aware of this. This makes it possible to handle EFI_NOT_READY always, not just for read as done in r19685. I've chosen to use a break statement instead of calling CheckStatusRegister directly; the break statement reaches a pre-existing call the CheckStatusRegister function. This ensures that the assignment to *ByteCount is not missed, and adds a further sanity check to DRQClear. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Tested-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Feng Tian <feng.tian@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19737 6f19259b-4bc3-4df7-8a09-765794883524