If there is no IOMMU associate to remote processor device,
remoteproc_core won't be able to satisfy device address requested
in firmware resource table.
Return an error as configuration won't be coherent.
Signed-off-by: Loic Pallardy <loic.pallardy@xxxxxx>
---
drivers/remoteproc/remoteproc_core.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 4170dfb..56b33e4 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -654,7 +654,15 @@ static int rproc_handle_carveout(struct rproc *rproc,
* to use the iommu-based DMA API: we expect 'dma' to contain the
* physical address in this case.
*/
- if (rproc->domain) {
+
+ if (rsc->da != FW_RSC_ADDR_ANY && !rproc->domain) {
+ dev_err(dev->parent,
+ "Bad carveout rsc configuration\n");
+ ret = -ENOMEM;
+ goto dma_free;
+ }
+
+ if (rsc->da != FW_RSC_ADDR_ANY && rproc->domain) {
mapping = kzalloc(sizeof(*mapping), GFP_KERNEL);
if (!mapping) {
ret = -ENOMEM;
--
1.9.1
--
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