linux-kernel - linux-next: manual merge of the tty tree with the tty.current tree

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Message-ID: <20231004125531.0c61a99d@canb.auug.org.au>
Date:   Wed, 4 Oct 2023 12:55:31 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Greg KH <greg@...ah.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        John Ogness <john.ogness@...utronix.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Lukas Wunner <lukas@...ner.de>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: linux-next: manual merge of the tty tree with the tty.current tree

Hi all,

Today's linux-next merge of the tty tree got a conflict in:

  drivers/tty/serial/serial_core.c

between commit:

  8679328eb859 ("serial: Reduce spinlocked portion of uart_rs485_config()")

from the tty.current tree and commit:

  559c7ff4e324 ("serial: core: Use port lock wrappers")

from the tty tree.

I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

-- 
Cheers,
Stephen Rothwell

diff --cc drivers/tty/serial/serial_core.c
index ca26a8aef2cb,b32bbd7aa3d3..000000000000
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@@ -1413,9 -1409,7 +1413,9 @@@ static int uart_rs485_config(struct uar
  	uart_sanitize_serial_rs485(port, rs485);
  	uart_set_rs485_termination(port, rs485);
  
- 	spin_lock_irqsave(&port->lock, flags);
++	uart_port_lock_irqsave(port, flags);
  	ret = port->rs485_config(port, NULL, rs485);
- 	spin_unlock_irqrestore(&port->lock, flags);
++	uart_port_unlock_irqrestore(port, flags);
  	if (ret)
  		memset(rs485, 0, sizeof(*rs485));
  
@@@ -2480,12 -2474,13 +2480,12 @@@ int uart_resume_port(struct uart_drive
  			if (ret == 0) {
  				if (tty)
  					uart_change_line_settings(tty, state, NULL);
 +				uart_rs485_config(uport);
- 				spin_lock_irq(&uport->lock);
+ 				uart_port_lock_irq(uport);
  				if (!(uport->rs485.flags & SER_RS485_ENABLED))
  					ops->set_mctrl(uport, uport->mctrl);
 -				else
 -					uart_rs485_config(uport);
  				ops->start_tx(uport);
- 				spin_unlock_irq(&uport->lock);
+ 				uart_port_unlock_irq(uport);
  				tty_port_set_initialized(port, true);
  			} else {
  				/*
@@@ -2592,10 -2587,10 +2592,10 @@@ uart_configure_port(struct uart_driver 
  		port->mctrl &= TIOCM_DTR;
  		if (!(port->rs485.flags & SER_RS485_ENABLED))
  			port->ops->set_mctrl(port, port->mctrl);
- 		spin_unlock_irqrestore(&port->lock, flags);
 -		else
 -			uart_rs485_config(port);
+ 		uart_port_unlock_irqrestore(port, flags);
  
 +		uart_rs485_config(port);
 +
  		/*
  		 * If this driver supports console, and it hasn't been
  		 * successfully registered yet, try to re-register it.

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