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Subject[PATCH 2/7] remoteproc: fix rproc_da_to_va in case of unallocated carveout
Date
With introduction of rproc_alloc_registered_carveouts() which
delays carveout allocation just before the start of the remote
processor, rproc_da_to_va() could be called before all carveouts
are allocated.
This patch adds a check in rproc_da_to_va() to return NULL if
carveout is not allocated.

Fixes: d7c51706d095 ("remoteproc: add alloc ops in rproc_mem_entry struct")

Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
---
drivers/remoteproc/remoteproc_core.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index c1a66e25b173..28df71cb3fef 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -204,6 +204,10 @@ void *rproc_da_to_va(struct rproc *rproc, u64 da, int len)
list_for_each_entry(carveout, &rproc->carveouts, node) {
int offset = da - carveout->da;

+ /* Verify that carveout is allocated */
+ if (!carveout->va)
+ continue;
+
/* try next carveout if da is too small */
if (offset < 0)
continue;
--
2.7.4
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