Ensure that if the interrupt handler is entered then only try and do tx
work if the tx irq is enabled.
Signed-off-by: Ben Dooks <ben.dooks@xxxxxxxxxxxxxxx>
---
drivers/tty/serial/meson_uart.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
index 6c36526..b12a37b 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -237,8 +237,10 @@ static irqreturn_t meson_uart_interrupt(int irq, void *dev_id)
if (!(readl(port->membase + AML_UART_STATUS) & AML_UART_RX_EMPTY))
meson_receive_chars(port);
- if (!(readl(port->membase + AML_UART_STATUS) & AML_UART_TX_FULL))
- meson_uart_start_tx(port);
+ if (!(readl(port->membase + AML_UART_STATUS) & AML_UART_TX_FULL)) {
+ if (readl(port->membase + AML_UART_CONTROL) & AML_UART_TX_INT_EN)
+ meson_uart_start_tx(port);
+ }
spin_unlock(&port->lock);
--
2.6.2
--
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