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path: root/drivers/serial/serial_ks8695.c
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Diffstat (limited to 'drivers/serial/serial_ks8695.c')
-rw-r--r--drivers/serial/serial_ks8695.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/serial/serial_ks8695.c b/drivers/serial/serial_ks8695.c
index e0665630e4da..52db5cc3f900 100644
--- a/drivers/serial/serial_ks8695.c
+++ b/drivers/serial/serial_ks8695.c
@@ -110,7 +110,11 @@ static struct console ks8695_console;
static void ks8695uart_stop_tx(struct uart_port *port)
{
if (tx_enabled(port)) {
- disable_irq(KS8695_IRQ_UART_TX);
+ /* use disable_irq_nosync() and not disable_irq() to avoid self
+ * imposed deadlock by not waiting for irq handler to end,
+ * since this ks8695uart_stop_tx() is called from interrupt context.
+ */
+ disable_irq_nosync(KS8695_IRQ_UART_TX);
tx_enable(port, 0);
}
}