On Tue, Feb 09, 2016 at 02:48:26PM +0100, Geert Uytterhoeven wrote: > On Tue, Feb 9, 2016 at 1:00 PM, Mark Rutland <mark.rutland@xxxxxxx> wrote: > > On Tue, Feb 09, 2016 at 01:04:28PM +0530, Sudip Mukherjee wrote: > >> On Tue, Feb 09, 2016 at 04:41:04PM +1100, Stephen Rothwell wrote: > >> > Changes since 20160208: > >> > >> tilepro, tilegx, mips defconfig build fails with the error: > >> ../include/asm-generic/fixmap.h: In function '__set_fixmap_offset': > >> ../include/asm-generic/fixmap.h:77:2: error: implicit declaration of > >> function '__set_fixmap' [-Werror=implicit-function-declaration] > >> > >> caused by: > >> commit ac4c0ac73485 ("asm-generic: make __set_fixmap_offset a static inline") > >> > >> Reverting the commit fixes the issue. > > > > Sorry about this. > > > > Is seems any arch without its own __set_fixmap may be adversely > > affected. > > > > I can't easily stub __set_fixmap as it's not implemented as a macro. > > But you can add a forward declaration? Good point. That seems to work (tested on arm64, mips, tilegx). Arnd, Catalin, happy with the bloew fixup to the original patch? Mark. ---->8---- >From e53a0fa34689cca13846475fb5a7cb4c7da87384 Mon Sep 17 00:00:00 2001 From: Mark Rutland <mark.rutland@xxxxxxx> Date: Tue, 9 Feb 2016 14:27:36 +0000 Subject: [PATCH] asm-generic: Fix build when __set_fixmap is absent Commit ac4c0ac73485 ("asm-generic: make __set_fixmap_offset a static inline") relied on the architecture code to define a __set_fixmap function, even if unused. This broke the build for architectures which do not implement __set_fixmap: ../include/asm-generic/fixmap.h:Infunction'__set_fixmap_offset': ../include/asm-generic/fixmap.h:77:2:error:implicitdeclarationof function'__set_fixmap'[-Werror=implicit-function-declaration] As we only require the prototype to be present, add this to asm-generic/fixmap.h, preventing build failures on these architectures. Signed-off-by: Mark Rutland <mark.rutland@xxxxxxx> Reported-by: Sudip Mukherjee <sudipm.mukherjee@xxxxxxxxx> Suggested-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Cc: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> Cc: Arnd Bergmann <arnd@xxxxxxxx> Cc: Catalin Marinas <catalin.marinas@xxxxxxx> Cc: Jeremy Linton <jeremy.linton@xxxxxxx> Cc: Laura Abbott <labbott@xxxxxxxxxxxxxxxxx> --- include/asm-generic/fixmap.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/asm-generic/fixmap.h b/include/asm-generic/fixmap.h index f9c27b6..e5255ff 100644 --- a/include/asm-generic/fixmap.h +++ b/include/asm-generic/fixmap.h @@ -69,6 +69,8 @@ static inline unsigned long virt_to_fix(const unsigned long vaddr) __set_fixmap(idx, 0, FIXMAP_PAGE_CLEAR) #endif +void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot); + /* Return a pointer with offset calculated */ static inline unsigned long __set_fixmap_offset(enum fixed_addresses idx, phys_addr_t phys, -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html