[PATCH] arm64/efi: Make strnlen() available to the EFI namespace

Thierry Reding thierry.reding at gmail.com
Mon Feb 15 11:17:36 PST 2016

From: Thierry Reding <treding at nvidia.com>

Changes introduced in the upstream version of libfdt pulled in by commit
91feabc2e224 ("scripts/dtc: Update to upstream commit b06e55c88b9b") use
the strnlen() function, which isn't currently available to the EFI name-
space. Add it to the EFI namespace to avoid a linker error.

Cc: Ard Biesheuvel <ard.biesheuvel at linaro.org>
Cc: Catalin Marinas <catalin.marinas at arm.com>
Cc: Will Deacon <will.deacon at arm.com>
Cc: Rob Herring <robh at kernel.org>
Signed-off-by: Thierry Reding <treding at nvidia.com>
 arch/arm64/kernel/image.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/kernel/image.h b/arch/arm64/kernel/image.h
index c9c62cab25a4..8a1978f4a555 100644
--- a/arch/arm64/kernel/image.h
+++ b/arch/arm64/kernel/image.h
@@ -96,6 +96,8 @@ __efistub_strcmp		= KALLSYMS_HIDE(__pi_strcmp);
 __efistub_strncmp		= KALLSYMS_HIDE(__pi_strncmp);
 __efistub___flush_dcache_area	= KALLSYMS_HIDE(__pi___flush_dcache_area);
+__efistub_strnlen		= KALLSYMS_HIDE(strnlen);
 __efistub___memcpy		= KALLSYMS_HIDE(__pi_memcpy);
 __efistub___memmove		= KALLSYMS_HIDE(__pi_memmove);

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