This is a note to let you know that I've just added the patch titled
tty: serial: fsl_lpuart: switch to new dmaengine_terminate_* API
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tty-serial-fsl_lpuart-switch-to-new-dmaengine_termin.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9da1b65e8b605ca30bf0106f430c5bcab727147f
Author: Sherry Sun <sherry.sun@xxxxxxx>
Date: Wed Nov 23 10:36:19 2022 +0800
tty: serial: fsl_lpuart: switch to new dmaengine_terminate_* API
[ Upstream commit 8682ab0eea89c300ebb120c02ead3999ca5560a8 ]
Convert dmaengine_terminate_all() calls to synchronous and asynchronous
versions where appropriate.
Signed-off-by: Sherry Sun <sherry.sun@xxxxxxx>
Link: https://lore.kernel.org/r/20221123023619.30173-1-sherry.sun@xxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Stable-dep-of: 1be6f2b15f90 ("tty: serial: fsl_lpuart: fix race on RX DMA shutdown")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index c51883f34ac2b..86e96696ab26d 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -582,7 +582,7 @@ static void lpuart_flush_buffer(struct uart_port *port)
sport->dma_tx_nents, DMA_TO_DEVICE);
sport->dma_tx_in_progress = false;
}
- dmaengine_terminate_all(chan);
+ dmaengine_terminate_async(chan);
}
if (lpuart_is_32(sport)) {
@@ -1333,7 +1333,7 @@ static void lpuart_dma_rx_free(struct uart_port *port)
struct lpuart_port, port);
struct dma_chan *chan = sport->dma_rx_chan;
- dmaengine_terminate_all(chan);
+ dmaengine_terminate_sync(chan);
dma_unmap_sg(chan->device->dev, &sport->rx_sgl, 1, DMA_FROM_DEVICE);
kfree(sport->rx_ring.buf);
sport->rx_ring.tail = 0;
@@ -1766,7 +1766,7 @@ static void lpuart_dma_shutdown(struct lpuart_port *sport)
if (wait_event_interruptible_timeout(sport->dma_wait,
!sport->dma_tx_in_progress, msecs_to_jiffies(300)) <= 0) {
sport->dma_tx_in_progress = false;
- dmaengine_terminate_all(sport->dma_tx_chan);
+ dmaengine_terminate_sync(sport->dma_tx_chan);
}
sport->lpuart_dma_tx_use = false;
}
@@ -2867,7 +2867,7 @@ static int __maybe_unused lpuart_suspend(struct device *dev)
if (sport->lpuart_dma_tx_use) {
sport->dma_tx_in_progress = false;
- dmaengine_terminate_all(sport->dma_tx_chan);
+ dmaengine_terminate_sync(sport->dma_tx_chan);
}
if (sport->port.suspended && !irq_wake)
