When adding a new service validate the configuration parameters
provided, and remove unnecessary checks in vchi, now that we have
validated service's config.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@xxxxxxx>
---
.../interface/vchiq_arm/vchiq_core.c | 15 +++++++++++++++
.../interface/vchiq_arm/vchiq_shim.c | 4 ----
2 files changed, 15 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
index ae9183db44ee..46b09b7154f8 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
@@ -2265,6 +2265,16 @@ vchiq_init_state(struct vchiq_state *state, struct vchiq_slot_zero *slot_zero)
return VCHIQ_ERROR;
}
+static int vchiq_validate_params(const struct vchiq_service_params *params)
+{
+ if (!params->callback || !params->fourcc) {
+ vchiq_loud_error("Can't add service, invalid params\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
/* Called from application thread when a client or server service is created. */
struct vchiq_service *
vchiq_add_service_internal(struct vchiq_state *state,
@@ -2275,8 +2285,13 @@ vchiq_add_service_internal(struct vchiq_state *state,
struct vchiq_service *service;
struct vchiq_service __rcu **pservice = NULL;
struct vchiq_service_quota *service_quota;
+ int ret;
int i;
+ ret = vchiq_validate_params(params);
+ if (ret)
+ return NULL;
+
service = kmalloc(sizeof(*service), GFP_KERNEL);
if (!service)
return service;
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c
index e09c595d6f9d..dcf8776834b1 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c
@@ -271,15 +271,11 @@ static enum vchiq_status shim_callback(enum vchiq_reason reason,
struct vchi_service *service =
(struct vchi_service *)VCHIQ_GET_SERVICE_USERDATA(handle);
- if (!service->callback)
- goto release;
-
if (reason == VCHIQ_MESSAGE_AVAILABLE)
vchiu_queue_push(&service->queue, header);
service->callback(service->callback_param, reason, bulk_user);
-release:
return VCHIQ_SUCCESS;
}
--
2.26.2
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