diff options
| author | Moteen Shah <m-shah@ti.com> | 2026-01-12 11:18:29 +0300 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2026-03-04 15:20:42 +0300 |
| commit | 6eeab682de767d34e7b0abd40db8577c3a2eb0a3 (patch) | |
| tree | ba73f5d3d425f0435076d0fca6d424878817f943 /drivers/tty/serial | |
| parent | c59cd1032032db14942d1f3d96c199496bdbccda (diff) | |
| download | linux-6eeab682de767d34e7b0abd40db8577c3a2eb0a3.tar.xz | |
serial: 8250: 8250_omap.c: Clear DMA RX running status only after DMA termination is done
[ Upstream commit a5fd8945a478ff9be14812693891d7c9b4185a50 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/tty/serial')
| -rw-r--r-- | drivers/tty/serial/8250/8250_omap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c index e26bae0a6488..272bc07c9a6b 100644 --- a/drivers/tty/serial/8250/8250_omap.c +++ b/drivers/tty/serial/8250/8250_omap.c @@ -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: |