diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c
index 897787d0803..8facf289710 100644
--- a/drivers/usb/gadget/function/f_uac2.c
+++ b/drivers/usb/gadget/function/f_uac2.c
@@ -2013,6 +2013,7 @@ static ssize_t f_uac2_opts_##name##_store(struct config_item *item,       \
 {                                                                      \
        struct f_uac2_opts *opts = to_f_uac2_opts(item);                \
        char *split_page = NULL;                                        \
+       char *rest;                                                     \
        int ret = -EINVAL;                                              \
        char *token;                                                    \
        u32 num;                                                        \
@@ -2027,7 +2028,12 @@ static ssize_t f_uac2_opts_##name##_store(struct config_item *item,      \
        i = 0;                                                          \
        memset(opts->name##s, 0x00, sizeof(opts->name##s));             \
        split_page = kstrdup(page, GFP_KERNEL);                         \
-       while ((token = strsep(&split_page, ",")) != NULL) {            \
+       if (!split_page) {                                              \
+               ret = -ENOMEM;                                          \
+               goto end;                                               \
+       }                                                               \
+       rest = split_page;                                              \
+       while ((token = strsep(&rest, ",")) != NULL) {                  \
                ret = kstrtou32(token, 0, &num);                        \
                if (ret)                                                \
                        goto end;                                       \