You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
24 lines
747 B
Diff
24 lines
747 B
Diff
Based on following upstream patch by Tim Harvey (Gateworks):
|
|
|
|
https://github.com/Gateworks/openwrt/commit/80a01b6582f94c4547f39d3a25e0a1e9b6eb9877
|
|
|
|
TX complete DMA messages are getting missed.
|
|
This is also currently an issue in mainline.
|
|
For now we will disable DMA in serial/imx.c.
|
|
|
|
This resolves an issue encountered with RS485 transmit.
|
|
|
|
--- a/drivers/tty/serial/imx.c
|
|
+++ b/drivers/tty/serial/imx.c
|
|
@@ -1268,10 +1268,6 @@ static int imx_startup(struct uart_port
|
|
|
|
writel(temp & ~UCR4_DREN, sport->port.membase + UCR4);
|
|
|
|
- /* Can we enable the DMA support? */
|
|
- if (!uart_console(port) && !sport->dma_is_inited)
|
|
- imx_uart_dma_init(sport);
|
|
-
|
|
spin_lock_irqsave(&sport->port.lock, flags);
|
|
/* Reset fifo's and state machines */
|
|
i = 100;
|