Commit f48180a7 authored Mar 08, 2017 by Vignesh R Committed by Greg Kroah-Hartman Mar 14, 2017

serial: 8250: 8250_core: Use dev_name() during request_irq()



Passing "serial" as name during request_irq() results in all serial port
irqs have same name. This does not help much to easily identify which
irq belongs to which serial port instance. Therefore pass dev_name()
during request_irq() so that better identifiable name is listed for
serial ports in cat /proc/interrupts output.

Output of cat /proc/interrupts
Before this patch:
 26:        689          0     GICv2 309 Edge      serial
After this patch:
 26:        696          0     GICv2 309 Edge      2530c00.serial

Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 22a33651

drivers/tty/serial/8250/8250_core.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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, "serial", i);
		irq_flags, dev_name(up->port.dev), i);
		if (ret < 0)
		serial_do_unlink(i, up);
		}