linux-kernel - Re: [PATCH 1/3] tty: serial: meson: modify request_irq and free

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Date:   Tue, 21 Dec 2021 08:30:23 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Yu Tu <yu.tu@...ogic.com>
Cc:     linux-serial@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Jiri Slaby <jirislaby@...nel.org>,
        Neil Armstrong <narmstrong@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: Re: [PATCH 1/3] tty: serial: meson: modify request_irq and free_irq

On Tue, Dec 21, 2021 at 03:16:32PM +0800, Yu Tu wrote:
> Change request_irq to devm_request_irq and free_irq to devm_free_irq.
> It's better to change the code this way.

Why?  What did this fix up?  You still are manually requesting and
freeing the irq.  What bug did you fix?

> 
> The IRQF_SHARED interrupt flag was added because an interrupt error was
> detected when the serial port was opened twice in a row on the project.

That is a different change.  Make that a different patch.

thanks,

greg k-h