linux-kernel - Re: [PATCH] Winchiphead 340/1: full baud rate and status/control line support

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Message-ID: <87sknzs79y.fsf@qurzaw.linpro.no>
Date:	Sun, 04 Jan 2009 11:19:21 +0100
From:	Tollef Fog Heen <tfheen@....no>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	linux-kernel@...r.kernel.org, werner@...nelius-consult.de,
	frank@...gswood-consulting.co.uk
Subject: Re: [PATCH] Winchiphead 340/1: full baud rate and status/control line support

]] Alan Cox 

| Some niggles but this is a big improvement to the code.

Thanks.  New patch incoming RSN.

| >  static int ch341_set_baudrate(struct usb_device *dev,
| > +			      struct tty_struct *tty,
| >  			      struct ch341_private *priv)
| > +	baud = CH341_BAUDBASE_FACTOR / t1;
| > +
| > +	if (baud && tty)
| > +		tty_encode_baud_rate(tty, baud, baud);
| 
| Can you really get a speed below 1 baud ?

Unsure what you mean here?  Why would you ever end up with baudrates
below 1?

| > +	control = priv->line_control;
| > +	spin_unlock_irqrestore(&priv->lock, flags);
| > +
| > +	return ch341_set_handshake(port->serial->dev, control);
| > +}
| 
| This could race another set_handshake ? I'm not sure it matters and I'd
| suggest that stuff gets fixed after this is submitted separately

What's the easiest way to fix this?

-- 
Tollef Fog Heen
UNIX is user friendly, it's just picky about who its friends are
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