linux-kernel - Re: [question] De-registration does not remove port

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Date:   Wed, 23 Jun 2021 09:14:56 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Saubhik Mukherjee <saubhik.mukherjee@...il.com>
Cc:     vgupta@...opsys.com, Jiri Slaby <jirislaby@...nel.org>,
        linux-snps-arc@...ts.infradead.org, linux-serial@...r.kernel.org,
        linux-kernel@...r.kernel.org, ldv-project@...uxtesting.org,
        Pavel Andrianov <andrianov@...ras.ru>
Subject: Re: [question] De-registration does not remove port

On Wed, Jun 23, 2021 at 11:42:36AM +0530, Saubhik Mukherjee wrote:
> In drivers/tty/serial/arc_uart.c, arc_serial_remove always returns 0,
> instead of calling uart_remove_one_port to remove uart port from serial
> core. The comment says "This will be never be called". In my understanding,
> a port added using uart_add_one_port should be removed during
> de-registration.
> 
> Is there a reason for this behavior?

Did you test the code to see if that function will ever be called?

thanks,

greg k-h