There is no need to specify a "ULL" suffix for "all bits set": "~0" is sufficient, and works regardless of type. In fact adding the suffix makes the code more fragile. Fixes: 48ab6d5d1f096d6f ("dma-mapping: fix 32-bit overflow with CONFIG_ARM_LPAE=n") Suggested-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> --- drivers/of/device.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/of/device.c b/drivers/of/device.c index 3a469c79e6b05de4..aedfaaafd3e7edb7 100644 --- a/drivers/of/device.c +++ b/drivers/of/device.c @@ -112,7 +112,7 @@ int of_dma_configure_id(struct device *dev, struct device_node *np, u64 dma_end = 0; /* Determine the overall bounds of all DMA regions */ - for (dma_start = ~0ULL; r->size; r++) { + for (dma_start = ~0; r->size; r++) { /* Take lower and upper limits */ if (r->dma_start < dma_start) dma_start = r->dma_start; -- 2.25.1