linux-kernel - [PATCH v2 2/2] serial: 8250: 8250_core: Fix irq name for 8250 serial IRQ

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Date:   Fri, 24 Mar 2017 10:58:00 +0530
From:   Vignesh R <vigneshr@...com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     Jiri Slaby <jslaby@...e.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Jisheng Zhang <jszhang@...vell.com>,
        <linux-serial@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, Vignesh R <vigneshr@...com>
Subject: [PATCH v2 2/2] serial: 8250: 8250_core: Fix irq name for 8250 serial IRQ

Using dev_name() as IRQ name during request_irq() might be misleading in
case of serial over PCI. Therefore identify serial port IRQ using
uart_port's name field. This will help mapping IRQs to appropriate
ttySN(where N is the serial port index) instances.

Signed-off-by: Vignesh R <vigneshr@...com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
---

v2:
Pick up reviewed by
s/irq(s)/IRQ(s) in commit message

 drivers/tty/serial/8250/8250_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index f83b69f30987..48a07e2f617f 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -218,7 +218,7 @@ static int serial_link_irq_chain(struct uart_8250_port *up)
 		spin_unlock_irq(&i->lock);
 		irq_flags |= up->port.irqflags;
 		ret = request_irq(up->port.irq, serial8250_interrupt,
-				  irq_flags, dev_name(up->port.dev), i);
+				  irq_flags, up->port.name, i);
 		if (ret < 0)
 			serial_do_unlink(i, up);
 	}
-- 
2.11.0