Merge "serial: msm_geni_serial: Make sure to have buffer for stop rx" (c4f187cf) · Commits · e / devices / android_kernel_fairphone_FP4

drivers/tty/serial/msm_geni_serial.c

+14 −1

Original line number	Diff line number	Diff line
		@@ -1044,8 +1044,21 @@ static void start_rx_sequencer(struct uart_port *uport)
		u32 geni_se_param = UART_PARAM_RFR_OPEN;

		geni_status = geni_read_reg_nolog(uport->membase, SE_GENI_STATUS);
		if (geni_status & S_GENI_CMD_ACTIVE)
		if (geni_status & S_GENI_CMD_ACTIVE) {
		if (port->xfer_mode == SE_DMA && !port->rx_dma) {
		IPC_LOG_MSG(port->ipc_log_misc,
		"%s: GENI: 0x%x\n", __func__, geni_status);
		ret = geni_se_rx_dma_prep(port->wrapper_dev,
		uport->membase, port->rx_buf, DMA_RX_BUF_SIZE,
		&port->rx_dma);
		if (ret) {
		IPC_LOG_MSG(port->ipc_log_misc,
		"%s: RX buff Fail %d\n", __func__, ret);
		goto exit_start_rx_sequencer;
		}
		}
		msm_geni_serial_stop_rx(uport);
		}

		/* Start RX with the RFR_OPEN to keep RFR in always ready state */
		geni_setup_s_cmd(uport->membase, UART_START_READ, geni_se_param);