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Subject[PATCH v2] tee: optee: log message if dynamic shm is enabled
When dynamic shared memory support is enabled in the OP-TEE Trusted
OS, it doesn't mean that the driver supports it, which can confuse
users during debugging. Log a message when dynamic shared memory is
enabled in the driver, to let users know for sure.

Suggested-by: Jerome Forissier <>
Signed-off-by: Victor Chong <>
Reviewed-by: Jerome Forissier <>

* Added patch description


drivers/tee/optee/core.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/tee/optee/core.c b/drivers/tee/optee/core.c
index e1aafe842d66..cca5c091e55a 100644
--- a/drivers/tee/optee/core.c
+++ b/drivers/tee/optee/core.c
@@ -631,6 +631,9 @@ static struct optee *optee_probe(struct device_node *np)


+ if (optee->sec_caps & OPTEE_SMC_SEC_CAP_DYNAMIC_SHM)
+ pr_info("dynamic shared memory is enabled\n");
pr_info("initialized driver\n");
return optee;
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