126 	int error;  in tca8418_write_byte()  local
128 	error = i2c_smbus_write_byte_data(keypad_data->client, reg, val);  in tca8418_write_byte()
129 	if (error < 0) {  in tca8418_write_byte()
132 			__func__, reg, val, error);  in tca8418_write_byte()
133 		return error;  in tca8418_write_byte()
145 	int error;  in tca8418_read_byte()  local
147 	error = i2c_smbus_read_byte_data(keypad_data->client, reg);  in tca8418_read_byte()
148 	if (error < 0) {  in tca8418_read_byte()
151 				__func__, reg, error);  in tca8418_read_byte()
152 		return error;  in tca8418_read_byte()
155 	*val = (u8)error;  in tca8418_read_byte()
164 	int error, col, row;  in tca8418_read_keypad()  local
168 	error = tca8418_read_byte(keypad_data, REG_KEY_EVENT_A, &reg);  in tca8418_read_keypad()
171 	while (error >= 0 && reg > 0) {  in tca8418_read_keypad()
186 		error = tca8418_read_byte(keypad_data, REG_KEY_EVENT_A, &reg);  in tca8418_read_keypad()
189 	if (error < 0)  in tca8418_read_keypad()
203 	int error;  in tca8418_irq_handler()  local
205 	error = tca8418_read_byte(keypad_data, REG_INT_STAT, &reg);  in tca8418_irq_handler()
206 	if (error) {  in tca8418_irq_handler()
223 	error = tca8418_write_byte(keypad_data, REG_INT_STAT, reg);  in tca8418_irq_handler()
224 	if (error)  in tca8418_irq_handler()
237 	int reg, error;  in tca8418_configure()  local
240 	error = tca8418_write_byte(keypad_data, REG_CFG,  in tca8418_configure()
242 	if (error < 0)  in tca8418_configure()
251 	error |= tca8418_write_byte(keypad_data, REG_KP_GPIO1, reg);  in tca8418_configure()
252 	error |= tca8418_write_byte(keypad_data, REG_KP_GPIO2, reg >> 8);  in tca8418_configure()
253 	error |= tca8418_write_byte(keypad_data, REG_KP_GPIO3, reg >> 16);  in tca8418_configure()
256 	error |= tca8418_write_byte(keypad_data, REG_DEBOUNCE_DIS1, reg);  in tca8418_configure()
257 	error |= tca8418_write_byte(keypad_data, REG_DEBOUNCE_DIS2, reg >> 8);  in tca8418_configure()
258 	error |= tca8418_write_byte(keypad_data, REG_DEBOUNCE_DIS3, reg >> 16);  in tca8418_configure()
260 	return error;  in tca8418_configure()
276 	int error, row_shift, max_keys;  in tca8418_keypad_probe()  local
328 	error = tca8418_configure(keypad_data, rows, cols);  in tca8418_keypad_probe()
329 	if (error < 0)  in tca8418_keypad_probe()
330 		return error;  in tca8418_keypad_probe()
345 	error = matrix_keypad_build_keymap(keymap_data, NULL, rows, cols,  in tca8418_keypad_probe()
347 	if (error) {  in tca8418_keypad_probe()
349 		return error;  in tca8418_keypad_probe()
362 	error = devm_request_threaded_irq(dev, irq, NULL, tca8418_irq_handler,  in tca8418_keypad_probe()
367 	if (error) {  in tca8418_keypad_probe()
369 			client->irq, error);  in tca8418_keypad_probe()
370 		return error;  in tca8418_keypad_probe()
373 	error = input_register_device(input);  in tca8418_keypad_probe()
374 	if (error) {  in tca8418_keypad_probe()
376 			error);  in tca8418_keypad_probe()
377 		return error;  in tca8418_keypad_probe()