[PATCH LINUX v3 06/10] tty: xuartps: Keep lock for whole ISR
From: Soren Brinkmann <hidden>
Date: 2015-11-22 02:59:56
Also in:
linux-serial, lkml
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
The RX path in the interrupt handler released a lock unnecessarily. Signed-off-by: Soren Brinkmann <redacted> --- drivers/tty/serial/xilinx_uartps.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 6ffd3bbe3e18..ab3995d00973 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c@@ -265,9 +265,7 @@ static irqreturn_t cdns_uart_isr(int irq, void *dev_id) uart_insert_char(port, isrstatus, CDNS_UART_IXR_OVERRUN, data, status); } - spin_unlock(&port->lock); tty_flip_buffer_push(&port->state->port); - spin_lock(&port->lock); } /* Dispatch an appropriate handler */
--
2.6.3.3.g9bb996a