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[ARM] 4153/1: fix consistent_sync() off-by-one BUG check
In consistent_sync(), start + size can end up pointing one byte beyond the end of the direct RAM mapping. We shouldn't BUG() when this happens. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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@ -485,7 +485,7 @@ void consistent_sync(const void *start, size_t size, int direction)
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{
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const void *end = start + size;
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BUG_ON(!virt_addr_valid(start) || !virt_addr_valid(end));
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BUG_ON(!virt_addr_valid(start) || !virt_addr_valid(end - 1));
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switch (direction) {
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case DMA_FROM_DEVICE: /* invalidate only */
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