1 files changed, 58 insertions, 22 deletions

diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c
index 578bbe65902..8389e810921 100644
--- a/drivers/hid/hid-rmi.c
+++ b/drivers/hid/hid-rmi.c
@@ -377,7 +377,7 @@ static int rmi_input_event(struct hid_device *hdev, u8 *data, int size)
 	irq_mask |= hdata->f30.irq_mask;
 
 	if (data[1] & ~irq_mask)
-		hid_warn(hdev, "unknown intr source:%02lx %s:%d\n",
+		hid_dbg(hdev, "unknown intr source:%02lx %s:%d\n",
 			data[1] & ~irq_mask, __FILE__, __LINE__);
 
 	if (hdata->f11.interrupt_base < hdata->f30.interrupt_base) {
@@ -400,7 +400,7 @@ static int rmi_read_data_event(struct hid_device *hdev, u8 *data, int size)
 	struct rmi_data *hdata = hid_get_drvdata(hdev);
 
 	if (!test_bit(RMI_READ_REQUEST_PENDING, &hdata->flags)) {
-		hid_err(hdev, "no read request pending\n");
+		hid_dbg(hdev, "no read request pending\n");
 		return 0;
 	}
 
@@ -549,10 +549,12 @@ static int rmi_populate_f11(struct hid_device *hdev)
 	u8 buf[20];
 	int ret;
 	bool has_query9;
-	bool has_query10;
+	bool has_query10 = false;
 	bool has_query11;
 	bool has_query12;
 	bool has_physical_props;
+	bool has_gestures;
+	bool has_rel;
 	unsigned x_size, y_size;
 	u16 query12_offset;
 
@@ -589,19 +591,32 @@ static int rmi_populate_f11(struct hid_device *hdev)
 		return -ENODEV;
 	}
 
-	/* query 8 to find out if query 10 exists */
-	ret = rmi_read(hdev, data->f11.query_base_addr + 8, buf);
-	if (ret) {
-		hid_err(hdev, "can not read gesture information: %d.\n", ret);
-		return ret;
+	has_rel = !!(buf[0] & BIT(3));
+	has_gestures = !!(buf[0] & BIT(5));
+
+	if (has_gestures) {
+		/* query 8 to find out if query 10 exists */
+		ret = rmi_read(hdev, data->f11.query_base_addr + 8, buf);
+		if (ret) {
+			hid_err(hdev, "can not read gesture information: %d.\n",
+				ret);
+			return ret;
+		}
+		has_query10 = !!(buf[0] & BIT(2));
 	}
-	has_query10 = !!(buf[0] & BIT(2));
 
 	/*
-	 * At least 8 queries are guaranteed to be present in F11
-	 * +1 for query12.
+	 * At least 4 queries are guaranteed to be present in F11
+	 * +1 for query 5 which is present since absolute events are
+	 * reported and +1 for query 12.
 	 */
-	query12_offset = 9;
+	query12_offset = 6;
+
+	if (has_rel)
+		++query12_offset; /* query 6 is present */
+
+	if (has_gestures)
+		query12_offset += 2; /* query 7 and 8 are present */
 
 	if (has_query9)
 		++query12_offset;
@@ -833,6 +848,8 @@ static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id)
 	struct rmi_data *data = NULL;
 	int ret;
 	size_t alloc_size;
+	struct hid_report *input_report;
+	struct hid_report *output_report;
 
 	data = devm_kzalloc(&hdev->dev, sizeof(struct rmi_data), GFP_KERNEL);
 	if (!data)
@@ -851,12 +868,26 @@ static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id)
 		return ret;
 	}
 
-	data->input_report_size = (hdev->report_enum[HID_INPUT_REPORT]
-		.report_id_hash[RMI_ATTN_REPORT_ID]->size >> 3)
-		+ 1 /* report id */;
-	data->output_report_size = (hdev->report_enum[HID_OUTPUT_REPORT]
-		.report_id_hash[RMI_WRITE_REPORT_ID]->size >> 3)
-		+ 1 /* report id */;
+	input_report = hdev->report_enum[HID_INPUT_REPORT]
+			.report_id_hash[RMI_ATTN_REPORT_ID];
+	if (!input_report) {
+		hid_err(hdev, "device does not have expected input report\n");
+		ret = -ENODEV;
+		return ret;
+	}
+
+	data->input_report_size = (input_report->size >> 3) + 1 /* report id */;
+
+	output_report = hdev->report_enum[HID_OUTPUT_REPORT]
+			.report_id_hash[RMI_WRITE_REPORT_ID];
+	if (!output_report) {
+		hid_err(hdev, "device does not have expected output report\n");
+		ret = -ENODEV;
+		return ret;
+	}
+
+	data->output_report_size = (output_report->size >> 3)
+					+ 1 /* report id */;
 
 	alloc_size = data->output_report_size + data->input_report_size;
 
@@ -878,10 +909,15 @@ static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id)
 		return ret;
 	}
 
-	if (!test_bit(RMI_STARTED, &data->flags)) {
-		hid_hw_stop(hdev);
-		return -EIO;
-	}
+	if (!test_bit(RMI_STARTED, &data->flags))
+		/*
+		 * The device maybe in the bootloader if rmi_input_configured
+		 * failed to find F11 in the PDT. Print an error, but don't
+		 * return an error from rmi_probe so that hidraw will be
+		 * accessible from userspace. That way a userspace tool
+		 * can be used to reload working firmware on the touchpad.
+		 */
+		hid_err(hdev, "Device failed to be properly configured\n");
 
 	return 0;
 }