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-rw-r--r--drivers/usb/gadget/function/f_midi.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c
index 259b656c0b3e..6316aa5b1c49 100644
--- a/drivers/usb/gadget/function/f_midi.c
+++ b/drivers/usb/gadget/function/f_midi.c
@@ -973,7 +973,13 @@ static ssize_t f_midi_opts_id_show(struct f_midi_opts *opts, char *page)
973 int result; 973 int result;
974 974
975 mutex_lock(&opts->lock); 975 mutex_lock(&opts->lock);
976 result = strlcpy(page, opts->id, PAGE_SIZE); 976 if (opts->id) {
977 result = strlcpy(page, opts->id, PAGE_SIZE);
978 } else {
979 page[0] = 0;
980 result = 0;
981 }
982
977 mutex_unlock(&opts->lock); 983 mutex_unlock(&opts->lock);
978 984
979 return result; 985 return result;