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

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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: Moteen Shah <m-shah@ti.com>
Link: https://patch.msgid.link/20260112081829.63049-3-m-shah@ti.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Moteen Shah 2026-01-12 13:48:29 +05:30 committed by Greg Kroah-Hartman
parent 623b07b370
commit a5fd8945a4
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/serial/8250/8250_omap.c
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@ -931,7 +931,6 @@ static void __dma_rx_do_complete(struct uart_8250_port *p)
goto out; goto out;
cookie = dma->rx_cookie; cookie = dma->rx_cookie;
dma->rx_running = 0;
/* Re-enable RX FIFO interrupt now that transfer is complete */ /* Re-enable RX FIFO interrupt now that transfer is complete */
if (priv->habit & UART_HAS_RHR_IT_DIS) { 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; goto out;
ret = tty_insert_flip_string(tty_port, dma->rx_buf, count); ret = tty_insert_flip_string(tty_port, dma->rx_buf, count);
dma->rx_running = 0;
p->port.icount.rx += ret; p->port.icount.rx += ret;
p->port.icount.buf_overrun += count - ret; p->port.icount.buf_overrun += count - ret;
out: out: