Merge "msm_serial_hs: Remove code dependency on flag tty_flush_receive"
diff --git a/drivers/tty/serial/msm_serial_hs.c b/drivers/tty/serial/msm_serial_hs.c
index 4058bec..12dca27 100644
--- a/drivers/tty/serial/msm_serial_hs.c
+++ b/drivers/tty/serial/msm_serial_hs.c
@@ -251,7 +251,6 @@
struct workqueue_struct *hsuart_wq; /* hsuart workqueue */
struct mutex clk_mutex; /* mutex to guard against clock off/clock on */
struct work_struct disconnect_rx_endpoint; /* disconnect rx_endpoint */
- bool tty_flush_receive;
enum uart_core_type uart_type;
u32 bam_handle;
resource_size_t bam_mem;
@@ -1838,12 +1837,13 @@
* Do the work buffer related work in BAM
* mode that is equivalent to legacy mode
*/
+ spin_lock_irqsave(&(msm_uport->uport.lock), flags);
- if (!msm_uport->tty_flush_receive)
+ if (!uart_circ_empty(tx_buf))
tx_buf->tail = (tx_buf->tail +
tx->tx_count) & ~UART_XMIT_SIZE;
else
- msm_uport->tty_flush_receive = false;
+ MSM_HS_DBG("%s:circ buffer is empty\n", __func__);
tx->dma_in_flight = 0;
@@ -1860,7 +1860,6 @@
if (uart_circ_chars_pending(tx_buf) < WAKEUP_CHARS)
uart_write_wakeup(uport);
- spin_lock_irqsave(&(msm_uport->uport.lock), flags);
if (msm_uport->tx.flush == FLUSH_STOP) {
msm_uport->tx.flush = FLUSH_SHUTDOWN;
wake_up(&msm_uport->tx.wait);
@@ -2036,14 +2035,6 @@
}
-static void msm_hs_flush_buffer(struct uart_port *uport)
-{
- struct msm_hs_port *msm_uport = UARTDM_TO_MSM(uport);
-
- if (msm_uport->tx.dma_in_flight)
- msm_uport->tty_flush_receive = true;
-}
-
/*
* Standard API, Break Signal
*
@@ -2281,11 +2272,9 @@
/* Do not update tx_buf.tail if uart_flush_buffer already
* called in serial core
*/
- if (!msm_uport->tty_flush_receive)
+ if (!uart_circ_empty(tx_buf))
tx_buf->tail = (tx_buf->tail +
tx->tx_count) & ~UART_XMIT_SIZE;
- else
- msm_uport->tty_flush_receive = false;
tx->dma_in_flight = 0;
@@ -2708,8 +2697,6 @@
tx->tx_ready_int_en = 0;
tx->dma_in_flight = 0;
rx->rx_cmd_exec = false;
- msm_uport->tty_flush_receive = false;
- MSM_HS_DBG("%s: Setting tty_flush_receive to false\n", __func__);
if (!is_blsp_uart(msm_uport)) {
tx->xfer.complete_func = msm_hs_dmov_tx_callback;
@@ -3751,7 +3738,7 @@
.config_port = msm_hs_config_port,
.release_port = msm_hs_release_port,
.request_port = msm_hs_request_port,
- .flush_buffer = msm_hs_flush_buffer,
+ .flush_buffer = NULL,
.ioctl = msm_hs_ioctl,
};