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Subject[PATCH 1/1] rpmsg: core: Add wildcard match for name service
Date
Adding the capability to supplement the base definition published
by an rpmsg_driver with a postfix description so that it is possible
for several entity to use the same service.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
drivers/rpmsg/rpmsg_core.c | 20 +++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c
index e330ec4dfc33..bfd25978fa35 100644
--- a/drivers/rpmsg/rpmsg_core.c
+++ b/drivers/rpmsg/rpmsg_core.c
@@ -399,7 +399,25 @@ ATTRIBUTE_GROUPS(rpmsg_dev);
static inline int rpmsg_id_match(const struct rpmsg_device *rpdev,
const struct rpmsg_device_id *id)
{
- return strncmp(id->name, rpdev->id.name, RPMSG_NAME_SIZE) == 0;
+ size_t len = min_t(size_t, strlen(id->name), RPMSG_NAME_SIZE);
+
+ /*
+ * Allow for wildcard matches. For example if rpmsg_driver::id_table
+ * is:
+ *
+ * static struct rpmsg_device_id rpmsg_driver_sample_id_table[] = {
+ * { .name = "rpmsg-client-sample" },
+ * { },
+ * }
+ *
+ * Then it is possible to support "rpmsg-client-sample*", i.e:
+ * rpmsg-client-sample
+ * rpmsg-client-sample_instance0
+ * rpmsg-client-sample_instance1
+ * ...
+ * rpmsg-client-sample_instanceX
+ */
+ return strncmp(id->name, rpdev->id.name, len) == 0;
}

/* match rpmsg channel and rpmsg driver */
--
2.20.1
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