Using dev_name() as irq name during request_irq() might be misleading in
case of serial over PCI. Therefore use a better alternative name for
identifying serial port irqs as "serial" appended with serial_index of
the port. This ensures that "serial" string is always present in irq
name while port index will help in distinguishing b/w different ports.
Signed-off-by: Vignesh R <vigneshr@xxxxxx>
---
Based on top of tty-next.
drivers/tty/serial/8250/8250_core.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index f83b69f30987..78bf621d6827 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -213,12 +213,20 @@ static int serial_link_irq_chain(struct uart_8250_port *up)
ret = 0;
} else {
+ char *irqname = kmalloc(20, GFP_KERNEL);
+ if (!irqname) {
+ spin_unlock_irq(&i->lock);
+ return -ENOMEM;
+ }
+ snprintf(irqname, 20,
+ "serial%d", serial_index(&up->port));
+
INIT_LIST_HEAD(&up->list);
i->head = &up->list;
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, irqname, i);
if (ret < 0)
serial_do_unlink(i, up);
}
--
2.11.0
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