of: Drop superfluous ULL suffix for ~0

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: 48ab6d5 ("dma-mapping: fix 32-bit overflow with CONFIG_ARM_LPAE=n") Suggested-by: Linus Torvalds <[email protected]> Signed-off-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
jangid · Nov 2, 2020 · 495023e · 495023e
1 parent 3cea11c
commit 495023e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git 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;