ARM: 6482/2: Fix find_next_zero_bit and related assembly
The find_next_bit, find_first_bit, find_next_zero_bit and find_first_zero_bit functions were not properly clamping to the maxbit argument at the bit level. They were instead only checking maxbit at the byte level. To fix this, add a compare and a conditional move instruction to the end of the common bit-within-the- byte code used by all the functions and be sure not to clobber the maxbit argument before it is used. Cc: <stable@kernel.org> Reviewed-by: NNicolas Pitre <nicolas.pitre@linaro.org> Tested-by: NStephen Warren <swarren@nvidia.com> Signed-off-by: NJames Jones <jajones@nvidia.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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