Commit e2fce0a2 authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Russell King
Browse files

ARM: 8655/1: improve NOMMU definition of pgprot_*()

The tegra DRM driver produces a harmless warning when built for NOMMU:

drivers/gpu/drm/tegra/gem.c: In function 'tegra_drm_mmap':
drivers/gpu/drm/tegra/gem.c:508:12: unused variable 'prot'

This is because pgprot_writecombine() on ARM returns a constant and
ignores its argument. The version in asm-generic doesn't have that
problem, so let's use that one instead. We don't actually care
about the value on NOMMU, and this is consistent with what some
other architectures do.
Signed-off-by: default avatarArnd Bergmann <>
Acked-by: default avatarThierry Reding <>
Signed-off-by: default avatarRussell King <>
parent 7b96ddd0
......@@ -63,9 +63,9 @@ typedef pte_t *pte_addr_t;
* Mark the prot value as uncacheable and unbufferable.
#define pgprot_noncached(prot) __pgprot(0)
#define pgprot_writecombine(prot) __pgprot(0)
#define pgprot_dmacoherent(prot) __pgprot(0)
#define pgprot_noncached(prot) (prot)
#define pgprot_writecombine(prot) (prot)
#define pgprot_dmacoherent(prot) (prot)
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