mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

serial: pch_uart: Use uart_xmit_advance() 

Take advantage of the new uart_xmit_advance() helper.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20221019091151.6692-5-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ilpo Järvinen 2022-10-19 12:11:11 +03:00 committed by Greg Kroah-Hartman
parent 1fcff75f39
commit a5c9611ddc
1 changed files with 4 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/tty/serial/pch_uart.c
View File

@ -738,15 +738,12 @@ static void pch_dma_tx_complete(void *arg)
{
struct eg20t_port *priv = arg;
struct uart_port *port = &priv->port;
struct circ_buf *xmit = &port->state->xmit;
struct scatterlist *sg = priv->sg_tx_p;
int i;
for (i = 0; i < priv->nent; i++, sg++) {
xmit->tail += sg_dma_len(sg);
port->icount.tx += sg_dma_len(sg);
}
xmit->tail &= UART_XMIT_SIZE - 1;
for (i = 0; i < priv->nent; i++, sg++)
uart_xmit_advance(port, sg_dma_len(sg));
async_tx_ack(priv->desc_tx);
dma_unmap_sg(port->dev, sg, priv->orig_nent, DMA_TO_DEVICE);
priv->tx_dma_use = 0;
@ -843,8 +840,7 @@ static unsigned int handle_tx(struct eg20t_port *priv)
while (!uart_tx_stopped(port) && !uart_circ_empty(xmit) && fifo_size) {
iowrite8(xmit->buf[xmit->tail], priv->membase + PCH_UART_THR);
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
port->icount.tx++;
uart_xmit_advance(port, 1);
fifo_size--;
tx_empty = 0;
}