Commit a5fd8945 authored by Moteen Shah's avatar Moteen Shah Committed by Greg Kroah-Hartman
Browse files

serial: 8250: 8250_omap.c: Clear DMA RX running status only after DMA termination is done 



Clear rx_running flag only after DMA teardown polling completes. In the
previous implementation the flag was being cleared while hardware teardown
was still in progress, creating a mismatch between software state
(flag = 0, "ready") and hardware state (still terminating).

Signed-off-by: default avatarMoteen Shah <m-shah@ti.com>
Link: https://patch.msgid.link/20260112081829.63049-3-m-shah@ti.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 623b07b3

drivers/tty/serial/8250/8250_omap.c

+1 −1
Original line number Diff line number Diff line
@@ -931,7 +931,6 @@ static void __dma_rx_do_complete(struct uart_8250_port *p) 
		goto out;



	cookie = dma->rx_cookie;

	dma->rx_running = 0;



	/* Re-enable RX FIFO interrupt now that transfer is complete */

	if (priv->habit & UART_HAS_RHR_IT_DIS) {
@@ -965,6 +964,7 @@ static void __dma_rx_do_complete(struct uart_8250_port *p) 
		goto out;

	ret = tty_insert_flip_string(tty_port, dma->rx_buf, count);



	dma->rx_running = 0;

	p->port.icount.rx += ret;

	p->port.icount.buf_overrun += count - ret;

out: