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of/address: check for invalid range.cpu_addr 

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: 7a8b64d17e ("of/address: use range parser for of_dma_get_range")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200817113208.523805-1-colin.king@canonical.com
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Colin Ian King 2020-08-17 12:32:08 +01:00 committed by Rob Herring
parent 9123e3a74e
commit f49c7faf77
1 changed files with 5 additions and 0 deletions
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5
drivers/of/address.c
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@ -985,6 +985,11 @@ 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 DMA address(%llx) to CPU address failed node(%pOF)\n",
range.bus_addr, node);
continue;
}
dma_offset = range.cpu_addr - range.bus_addr;
/* Take lower and upper limits */