efi/libstub: fix efi_parse_options() ignoring the default command line

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[ Upstream commit aacfa0ef24 ]

efi_convert_cmdline() always returns a size of at least 1 because it
counts the NUL terminator, so the "cmdline_size == 0" condition is never
satisfied.

Change it to check if the string starts with a NUL character to get the
intended behavior: to use CONFIG_CMDLINE when load_options_size == 0.

Fixes: 60f38de7a8 ("efi/libstub: Unify command line param parsing")
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Jonathan Marek 2024-10-13 01:11:56 -04:00 • committed by Greg Kroah-Hartman

parent b18f8d9e28

commit ae0ad16260

1 changed files with 1 additions and 1 deletions

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drivers/firmware/efi/libstub/efi-stub.c

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