diff options
Diffstat (limited to 'drivers/infiniband/core')
| -rw-r--r-- | drivers/infiniband/core/device.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c index e470fa651961..2a7d54794ee3 100644 --- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -240,6 +240,34 @@ static struct ib_device *__ib_device_get_by_name(const char *name) return NULL; } +/** + * ib_device_get_by_name - Find an IB device by name + * @name: The name to look for + * @driver_id: The driver ID that must match (RDMA_DRIVER_UNKNOWN matches all) + * + * Find and hold an ib_device by its name. The caller must call + * ib_device_put() on the returned pointer. + */ +struct ib_device *ib_device_get_by_name(const char *name, + enum rdma_driver_id driver_id) +{ + struct ib_device *device; + + down_read(&devices_rwsem); + device = __ib_device_get_by_name(name); + if (device && driver_id != RDMA_DRIVER_UNKNOWN && + device->driver_id != driver_id) + device = NULL; + + if (device) { + if (!ib_device_try_get(device)) + device = NULL; + } + up_read(&devices_rwsem); + return device; +} +EXPORT_SYMBOL(ib_device_get_by_name); + int ib_device_rename(struct ib_device *ibdev, const char *name) { int ret; |