[RAMEN9610-21500]HID: Fix assumption that devices have inputs

[GitHub/LineageOS/android_kernel_motorola_exynos9610.git] / drivers / hid / hid-tmff.c

diff --git a/drivers/hid/hid-tmff.c b/drivers/hid/hid-tmff.c
index b83376077d72282ac3373fe700e8d273d303fc1f..9e908d94cc4c6f0fb494d358dfb387e7fd9a37e6 100644 (file)
--- a/drivers/hid/hid-tmff.c
+++ b/drivers/hid/hid-tmff.c
@@ -126,12 +126,18 @@ static int tmff_init(struct hid_device *hid, const signed short *ff_bits)
        struct tmff_device *tmff;
        struct hid_report *report;
        struct list_head *report_list;
-       struct hid_input *hidinput = list_entry(hid->inputs.next,
-                                                       struct hid_input, list);
-       struct input_dev *input_dev = hidinput->input;
+       struct hid_input *hidinput;
+       struct input_dev *input_dev;
        int error;
        int i;
 
+       if (list_empty(&hid->inputs)) {
+               hid_err(hid, "no inputs found\n");
+               return -ENODEV;
+       }
+       hidinput = list_entry(hid->inputs.next, struct hid_input, list);
+       input_dev = hidinput->input;
+
        tmff = kzalloc(sizeof(struct tmff_device), GFP_KERNEL);
        if (!tmff)
                return -ENOMEM;