linux-kernel - Re: [PATCH] tty: Remove pointless synchronize_irq() in uart_port

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Message-ID: <87czglp9ir.ffs@tglx>
Date:   Tue, 10 May 2022 19:44:44 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Thomas Pfaff <tpfaff@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tty: Remove pointless synchronize_irq() in
 uart_port_shutdown()

On Tue, May 10 2022 at 15:54, Thomas Pfaff wrote:
> From: Thomas Pfaff <tpfaff@....com>
>
> Calling synchronize_irq() after free_irq() is pointless, the context to
> the irq is already lost.
> It was noticed while creating the bugfix "genirq: Synchronize interrupt 
> thread startup".
>
> Signed-off-by: Thomas Pfaff <tpfaff@....com>

Reviewed-by: Thomas Gleixner <tglx@...utronix.de>