On Thu, 02 May, at 10:07:01PM, Lee, Chun-Yi wrote: > That will be better initial the value of DataSize to zero for the input of > GetVariable(), otherwise we will feed a random value. The debug log of input > DataSize like this: > > ... > [ 195.915612] EFI Variables Facility v0.08 2004-May-17 > [ 195.915819] efi: size: 18446744071581821342 > [ 195.915969] efi: size': 18446744071581821342 > [ 195.916324] efi: size: 18446612150714306560 > [ 195.916632] efi: size': 18446612150714306560 > [ 195.917159] efi: size: 18446612150714306560 > [ 195.917453] efi: size': 18446612150714306560 > ... > > The size' is value that was returned by BIOS. > > After applied this patch: > [ 82.442042] EFI Variables Facility v0.08 2004-May-17 > [ 82.442202] efi: size: 0 > [ 82.442360] efi: size': 1039 > [ 82.443828] efi: size: 0 > [ 82.444127] efi: size': 2616 > [ 82.447057] efi: size: 0 > [ 82.447356] efi: size': 5832 > ... > > Found on Acer Aspire V3 BIOS, it will not return the size of data if we input a > non-zero DataSize. > > Cc: Matthew Garrett <mjg@xxxxxxxxxx> > Cc: Matt Fleming <matt.fleming@xxxxxxxxx> > Cc: H. Peter Anvin <hpa@xxxxxxxxx> > Signed-off-by: Lee, Chun-Yi <jlee@xxxxxxxx> > --- > arch/x86/platform/efi/efi.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) Applied, thanks. -- Matt Fleming, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
