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| author | Takashi Iwai <tiwai@suse.de> | 2022-12-22 11:11:48 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2022-12-22 11:11:48 +0300 |
| commit | 2d78eb0342dd2c9c5cde9ae9ada1d33f189a858b (patch) | |
| tree | f711bc9cab45f4963e4883ef15ff4c54a6cbc12e /drivers/tty/serial/8250/8250_lpss.c | |
| parent | b47068b4aa53a57552398e3f60d0ed1918700c2b (diff) | |
| parent | ee0b089d660021792e4ab4dda191b097ce1e964f (diff) | |
| download | linux-2d78eb0342dd2c9c5cde9ae9ada1d33f189a858b.tar.xz | |
Merge branch 'for-next' into for-linus
Diffstat (limited to 'drivers/tty/serial/8250/8250_lpss.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_lpss.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/tty/serial/8250/8250_lpss.c b/drivers/tty/serial/8250/8250_lpss.c index 44cc755b1a29..0e43bdfb7459 100644 --- a/drivers/tty/serial/8250/8250_lpss.c +++ b/drivers/tty/serial/8250/8250_lpss.c @@ -174,6 +174,8 @@ static int ehl_serial_setup(struct lpss8250 *lpss, struct uart_port *port) */ up->dma = dma; + lpss->dma_maxburst = 16; + port->set_termios = dw8250_do_set_termios; return 0; @@ -277,8 +279,13 @@ static int lpss8250_dma_setup(struct lpss8250 *lpss, struct uart_8250_port *port struct dw_dma_slave *rx_param, *tx_param; struct device *dev = port->port.dev; - if (!lpss->dma_param.dma_dev) + if (!lpss->dma_param.dma_dev) { + dma = port->dma; + if (dma) + goto out_configuration_only; + return 0; + } rx_param = devm_kzalloc(dev, sizeof(*rx_param), GFP_KERNEL); if (!rx_param) @@ -289,16 +296,18 @@ static int lpss8250_dma_setup(struct lpss8250 *lpss, struct uart_8250_port *port return -ENOMEM; *rx_param = lpss->dma_param; - dma->rxconf.src_maxburst = lpss->dma_maxburst; - *tx_param = lpss->dma_param; - dma->txconf.dst_maxburst = lpss->dma_maxburst; dma->fn = lpss8250_dma_filter; dma->rx_param = rx_param; dma->tx_param = tx_param; port->dma = dma; + +out_configuration_only: + dma->rxconf.src_maxburst = lpss->dma_maxburst; + dma->txconf.dst_maxburst = lpss->dma_maxburst; + return 0; } |