Will Deacon c5102f5935 ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails ... The cacheflush syscall can fail for two reasons: (1) The arguments are invalid (nonsensical address range or no VMA) (2) The region generates a translation fault on a VIPT or PIPT cache This patch allows do_cache_op to return an error code to userspace in the case of the above. The various coherent_user_range implementations are modified to return 0 in the case of VIVT caches or -EFAULT in the case of an abort on v6/v7 cores. Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>		2012-05-02 11:12:49 +01:00
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asm	ARM: 7408/1: cacheflush: return error to userspace when flushing syscall fails	2012-05-02 11:12:49 +01:00