Re: [edk2-devel] [PATCH V3 3/3] MdeModulePkg/PartitionDxe: Add already start check for child hanldes

["Gao, Zhichao" <zhichao.gao@intel.com>]

Sure.

Update the commit message here:

The partition binding driver would run serval times during BDS. If the partition supports MBR, it would pass the first connect in the MBR routine function. The second connect would return already started which would be treated as not found and continue to run next routine. That is incorrect behavior. The device should only support one partition format. Treat the already started as success to avoid incorrect next partition routine check.

Thanks,
Zhichao

> -----Original Message-----
> From: Ni, Ray <ray.ni@intel.com>
> Sent: Tuesday, July 14, 2020 10:04 AM
> To: devel@edk2.groups.io; Gao, Zhichao <zhichao.gao@intel.com>
> Cc: Wu, Hao A <hao.a.wu@intel.com>
> Subject: RE: [edk2-devel] [PATCH V3 3/3] MdeModulePkg/PartitionDxe: Add
> already start check for child hanldes
> 
> Zhichao,
> Can you add more information in the commit message on what bug the patch
> can fix?
> With that, Reviewed-by: Ray Ni <ray.ni@intel.com>
> 
> > -----Original Message-----
> > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Gao,
> > Zhichao
> > Sent: Tuesday, July 14, 2020 9:23 AM
> > To: devel@edk2.groups.io
> > Cc: Wu, Hao A <hao.a.wu@intel.com>; Ni, Ray <ray.ni@intel.com>
> > Subject: [edk2-devel] [PATCH V3 3/3] MdeModulePkg/PartitionDxe: Add
> > already start check for child hanldes
> >
> > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2823
> >
> > Treat the EFI_ALREADY_STARTED as EFI_SUCCESS to avoid the partition
> > driver continuely check next routine function.
> >
> > Cc: Hao A Wu <hao.a.wu@intel.com>
> > Cc: Ray Ni <ray.ni@intel.com>
> > Signed-off-by: Zhichao Gao <zhichao.gao@intel.com>
> > Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
> > ---
> >  MdeModulePkg/Universal/Disk/PartitionDxe/Partition.c | 9 +++++++++
> >  1 file changed, 9 insertions(+)
> >
> > diff --git a/MdeModulePkg/Universal/Disk/PartitionDxe/Partition.c
> > b/MdeModulePkg/Universal/Disk/PartitionDxe/Partition.c
> > index d1c878ad2e..6a43c3cafb 100644
> > --- a/MdeModulePkg/Universal/Disk/PartitionDxe/Partition.c
> > +++ b/MdeModulePkg/Universal/Disk/PartitionDxe/Partition.c
> > @@ -1276,6 +1276,15 @@ PartitionInstallChildHandle (
> >    } else {
> >      FreePool (Private->DevicePath);
> >      FreePool (Private);
> > +
> > +    //
> > +    // if the Status == EFI_ALREADY_STARTED, it means the child handles
> > +    // are already installed. So return EFI_SUCCESS to avoid do the next
> > +    // partition type check.
> > +    //
> > +    if (Status == EFI_ALREADY_STARTED) {
> > +      Status = EFI_SUCCESS;
> > +    }
> >    }
> >
> >    return Status;
> > --
> > 2.21.0.windows.1
> >
> >
> > 
>