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| author | Christian Lamparter <chunkeey@gmail.com> | 2017-10-01 16:33:03 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-10-03 12:59:48 +0200 |
| commit | 070e004912fed099263408bf2ff1bbc6926abe2e (patch) | |
| tree | e4e3a80f50c58bdf7841fc7fdbfa703e1993fc20 /arch | |
| parent | powerpc: Fix action argument for cpufeatures-based TLB flush (diff) | |
| download | linux-070e004912fed099263408bf2ff1bbc6926abe2e.tar.xz linux-070e004912fed099263408bf2ff1bbc6926abe2e.zip | |
powerpc/4xx: Fix compile error with 64K pages on 40x, 44x
The mmu context on the 40x, 44x does not define pte_frag entry. This
causes gcc abort the compilation due to:
setup-common.c: In function ‘setup_arch’:
setup-common.c:908: error: ‘mm_context_t’ has no ‘pte_frag’
This patch fixes the issue by removing the pte_frag initialization in
setup-common.c.
This is possible, because the compiler will do the initialization,
since the mm_context is a sub struct of init_mm. init_mm is declared
in mm_types.h as external linkage.
According to C99 6.2.4.3:
An object whose identifier is declared with external linkage
[...] has static storage duration.
C99 defines in 6.7.8.10 that:
If an object that has static storage duration is not
initialized explicitly, then:
- if it has pointer type, it is initialized to a null pointer
Fixes: b1923caa6e64 ("powerpc: Merge 32-bit and 64-bit setup_arch()")
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/setup-common.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 0ac741fae90e..2e3bc16d02b2 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -904,9 +904,6 @@ void __init setup_arch(char **cmdline_p) #endif #endif -#ifdef CONFIG_PPC_64K_PAGES - init_mm.context.pte_frag = NULL; -#endif #ifdef CONFIG_SPAPR_TCE_IOMMU mm_iommu_init(&init_mm); #endif |