Messages in this thread Patch in this message | | | Date | Sun, 27 Jan 2013 20:29:56 -0800 | From | tip-bot for David Woodhouse <> | Subject | [tip:x86/efi] x86, efi: Fix display detection in EFI boot stub |
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Commit-ID: 70a479cbe80296d3113e65cc2f713a5101061daf Gitweb: http://git.kernel.org/tip/70a479cbe80296d3113e65cc2f713a5101061daf Author: David Woodhouse <David.Woodhouse@intel.com> AuthorDate: Mon, 7 Jan 2013 21:52:16 +0000 Committer: H. Peter Anvin <hpa@linux.intel.com> CommitDate: Sun, 27 Jan 2013 20:19:37 -0800
x86, efi: Fix display detection in EFI boot stub
When booting under OVMF we have precisely one GOP device, and it implements the ConOut protocol.
We break out of the loop when we look at it... and then promptly abort because 'first_gop' never gets set. We should set first_gop *before* breaking out of the loop. Yes, it doesn't really mean "first" any more, but that doesn't matter. It's only a flag to indicate that a suitable GOP was found.
In fact, we'd do just as well to initialise 'width' to zero in this function, then just check *that* instead of first_gop. But I'll do the minimal fix for now (and for stable@).
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: <stable@kernel.org> Link: http://lkml.kernel.org/r/1358513837.2397.247.camel@shinybook.infradead.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: Matt Fleming <matt.fleming@intel.com> --- arch/x86/boot/compressed/eboot.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c index 18e329c..448a86e 100644 --- a/arch/x86/boot/compressed/eboot.c +++ b/arch/x86/boot/compressed/eboot.c @@ -432,10 +432,9 @@ static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto, * Once we've found a GOP supporting ConOut, * don't bother looking any further. */ + first_gop = gop; if (conout_found) break; - - first_gop = gop; } }
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