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Message-ID: <Yf04R+REP6WahIIr@kroah.com>
Date: Fri, 4 Feb 2022 15:29:27 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
Jiri Slaby <jirislaby@...nel.org>
Subject: Re: [PATCH v1 1/1] serial: core: Drop duplicate NULL check in
uart_*shutdown()
On Wed, Feb 02, 2022 at 06:56:48PM +0200, Andy Shevchenko wrote:
> The free_page(addr), which becomes free_pages(addr, 0) checks addr
> against 0. No need to repeat this check in the callers.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
> drivers/tty/serial/serial_core.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
> index 57f472268b6d..59f93040d807 100644
> --- a/drivers/tty/serial/serial_core.c
> +++ b/drivers/tty/serial/serial_core.c
> @@ -328,8 +328,7 @@ static void uart_shutdown(struct tty_struct *tty, struct uart_state *state)
> state->xmit.buf = NULL;
> spin_unlock_irqrestore(&uport->lock, flags);
>
> - if (xmit_buf)
> - free_page((unsigned long)xmit_buf);
> + free_page((unsigned long)xmit_buf);
> }
>
> /**
> @@ -1621,8 +1620,7 @@ static void uart_tty_port_shutdown(struct tty_port *port)
> state->xmit.buf = NULL;
> spin_unlock_irq(&uport->lock);
>
> - if (buf)
> - free_page((unsigned long)buf);
> + free_page((unsigned long)buf);
> }
>
> static void uart_wait_until_sent(struct tty_struct *tty, int timeout)
> --
> 2.34.1
>
What branch is this against? It fails to apply to my tty-next branch :(
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