tty: serial: simplify qcom_geni_serial_send_chunk_fifo()

* use memcpy() instead of the loop (removes c variable)
* use remaining parameter directly (removes chunk variable)

The code is simpler and easier to follow.

Cc: Andy Gross <[email protected]>
Cc: Bjorn Andersson <[email protected]>
Cc: Konrad Dybcio <[email protected]>
Cc: [email protected]
Signed-off-by: Jiri Slaby (SUSE) <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

1 files changed, 4 insertions, 6 deletions

diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index 1881dd5b3c4d..08dc3e2a729c 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -854,21 +854,19 @@ static void qcom_geni_serial_stop_tx(struct uart_port *uport)
 }
 
 static void qcom_geni_serial_send_chunk_fifo(struct uart_port *uport,
-					     unsigned int chunk)
+					     unsigned int remaining)
 {
 	struct qcom_geni_serial_port *port = to_dev_port(uport);
 	struct circ_buf *xmit = &uport->state->xmit;
-	unsigned int tx_bytes, c, remaining = chunk;
+	unsigned int tx_bytes;
 	u8 buf[BYTES_PER_FIFO_WORD];
 
 	while (remaining) {
 		memset(buf, 0, sizeof(buf));
 		tx_bytes = min(remaining, BYTES_PER_FIFO_WORD);
 
-		for (c = 0; c < tx_bytes ; c++) {
-			buf[c] = xmit->buf[xmit->tail];
-			uart_xmit_advance(uport, 1);
-		}
+		memcpy(buf, &xmit->buf[xmit->tail], tx_bytes);
+		uart_xmit_advance(uport, tx_bytes);
 
 		iowrite32_rep(uport->membase + SE_GENI_TX_FIFOn, buf, 1);