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Diffstat (limited to 'include/uapi/linux/gsmmux.h')
-rw-r--r--include/uapi/linux/gsmmux.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/linux/gsmmux.h b/include/uapi/linux/gsmmux.h
index 101d3c469acb..cb8693b39cb7 100644
--- a/include/uapi/linux/gsmmux.h
+++ b/include/uapi/linux/gsmmux.h
@@ -37,5 +37,7 @@ struct gsm_netconfig {
#define GSMIOC_ENABLE_NET _IOW('G', 2, struct gsm_netconfig)
#define GSMIOC_DISABLE_NET _IO('G', 3)
+/* get the base tty number for a configured gsmmux tty */
+#define GSMIOC_GETFIRST _IOR('G', 4, __u32)
#endif