diff options
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/hid-input.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 4e94ea3e280a..83755ba33ef4 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -1516,6 +1516,7 @@ static struct hid_input *hidinput_allocate(struct hid_device *hid, struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); struct input_dev *input_dev = input_allocate_device(); const char *suffix = NULL; + size_t suffix_len, name_len; if (!hidinput || !input_dev) goto fail; @@ -1559,10 +1560,15 @@ static struct hid_input *hidinput_allocate(struct hid_device *hid, } if (suffix) { - hidinput->name = kasprintf(GFP_KERNEL, "%s %s", - hid->name, suffix); - if (!hidinput->name) - goto fail; + name_len = strlen(hid->name); + suffix_len = strlen(suffix); + if ((name_len < suffix_len) || + strcmp(hid->name + name_len - suffix_len, suffix)) { + hidinput->name = kasprintf(GFP_KERNEL, "%s %s", + hid->name, suffix); + if (!hidinput->name) + goto fail; + } } input_set_drvdata(input_dev, hid); |