From: Colin Ian King <redacted>

Currently invalid CPU addresses are not being sanity checked resulting in
SATA setup failure on a SynQuacer SC2A11 development machine. The original
check was removed by and earlier commit, so add a sanity check back in
to avoid this regression.

Fixes: 7a8b64d17e35 ("of/address: use range parser for of_dma_get_range")
Signed-off-by: Colin Ian King <redacted>
---
 drivers/of/address.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/of/address.c b/drivers/of/address.c
index 590493e04b01..6ffbf7b99e92 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c

@@ -985,6 +985,10 @@ int of_dma_get_range(struct device_node *np, u64 *dma_addr, u64 *paddr, u64 *siz
                        /* Don't error out as we'd break some existing DTs */
                        continue;
                }
+               if (range.cpu_addr == OF_BAD_ADDR) {
+                       pr_err("Translation of CPU address failed on node (%pOF)\n", node);
+                       continue;
+               }
                dma_offset = range.cpu_addr - range.bus_addr;

                /* Take lower and upper limits */
--

V2: print message using pr_err and don't print range.cpu_addr as it's always
    going to be OF_BAD_ADDR so the information is pointless.