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

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Message-ID: <3e131267-e1b3-1b83-f8be-0577da479223@gmail.com>
Date:   Wed, 23 Jun 2021 11:42:36 +0530
From:   Saubhik Mukherjee <saubhik.mukherjee@...il.com>
To:     vgupta@...opsys.com, Greg KH <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>
Cc:     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: [question] De-registration does not remove port

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?