On Tue, Mar 14, 2017 at 3:44 PM, Vignesh R [off-list ref] wrote:

On Monday 13 March 2017 01:35 AM, Andy Shevchenko wrote:

quoted

On Wed, Mar 8, 2017 at 2:19 PM, Vignesh R [off-list ref] wrote:

quoted

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

 But, this change is making interrupt name more descriptive

It doesn't in PCI case, it makes it worse.

(The world is not DT-centric)

quoted

Besides that imagine what would be the name of PCI device here.
I would suggest adding ID if you need one in a form like
"serial%d", where ID may or may not be supplied by the actual 8250 drivers.

Are you suggesting to use serial_index() as ID?

Yes.

-- 
With Best Regards,
Andy Shevchenko