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Message-ID: <1446708079-1105-7-git-send-email-soren.brinkmann@xilinx.com>
Date: Wed, 4 Nov 2015 23:21:15 -0800
From: Soren Brinkmann <soren.brinkmann@...inx.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jiri Slaby <jslaby@...e.com>
CC: Michal Simek <michal.simek@...inx.com>,
<linux-serial@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>,
"Soren Brinkmann" <soren.brinkmann@...inx.com>
Subject: [PATCH v2 06/10] tty: xuartps: Keep lock for whole ISR
The RX path in the interrupt handler released a lock unnecessarily.
Signed-off-by: Soren Brinkmann <soren.brinkmann@...inx.com>
---
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 167e0f4bcf7a..5efd1b9d220f 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 */
--
2.6.2.3.ga463a5b
--
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