Merge "mm: arm: Fix BUG() while do iova range checking" (22baad26) · Commits · e / devices / android_kernel_xiaomi_sm6125

arch/arm/mm/dma-mapping.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1394,7 +1394,8 @@ static inline void __free_iova(struct dma_iommu_mapping *mapping,

		start = (addr - bitmap_base) >> PAGE_SHIFT;

		if (addr + size > bitmap_base + mapping_size) {
		if ((addr + size - 1 > addr) &&
		(addr + size - 1 > bitmap_base + mapping_size - 1)) {
		/*
		* The address range to be freed reaches into the iova
		* range of the next bitmap. This should not happen as