From: Aleksandar Mitev <amitev@xxxxxxxxxxx>
This prevents DMA timer timeout that can trigger after the port has
been closed.
Signed-off-by: Aleksandar Mitev <amitev@xxxxxxxxxxx>
[geert: Move del_timer_sync() outside spinlock to avoid circular locking
dependency between rx_timer_fn() and del_timer_sync()]
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
v4:
- New.
---
drivers/tty/serial/sh-sci.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index ac9ce8f1ff799a48..36a11110acf4cab5 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1810,6 +1810,14 @@ static void sci_shutdown(struct uart_port *port)
sci_stop_tx(port);
spin_unlock_irqrestore(&port->lock, flags);
+#ifdef CONFIG_SERIAL_SH_SCI_DMA
+ if (s->chan_rx) {
+ dev_dbg(port->dev, "%s(%d) deleting rx_timer\n", __func__,
+ port->line);
+ del_timer_sync(&s->rx_timer);
+ }
+#endif
+
sci_free_dma(port);
sci_free_irq(s);
}
--
1.9.1
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