Date: Mon, 9 Feb 2015 16:42:40 +0800
From: Johan Hovold <johan@kernel.org>
To: Peter Hung <hpeter@gmail.com>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>, johan@kernel.org,
        gregkh@linuxfoundation.org, linux-usb@vger.kernel.org,
        linux-kernel@vger.kernel.org, tom_tsai@fintek.com.tw,
        peter_hong@fintek.com.tw, Peter Hung <hpeter+linux_kernel@gmail.com>
Subject: Re: [PATCH V5 6/8] USB: f81232: clarify f81232_ioctl()
Message-ID: <20150209084240.GA10150@localhost>
References: <1423216014-571-1-git-send-email-hpeter+linux_kernel@gmail.com>
 <1423216014-571-7-git-send-email-hpeter+linux_kernel@gmail.com>
 <54D4B1B3.60001@cogentembedded.com>
 <54D85AC0.70000@gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <54D85AC0.70000@gmail.com>
User-Agent: Mutt/1.5.22 (2013-10-16)
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1789
Lines: 53

On Mon, Feb 09, 2015 at 02:59:12PM +0800, Peter Hung wrote:
> Hello,
> 
> Sergei Shtylyov 於 2015/2/6 下午 08:21 寫道:
> >> We extract TIOCGSERIAL section in f81232_ioctl() to
> >> f81232_get_serial_info()
> >> to make it clarify
> >
> >     You're also changing 'ser.baud_rate' from 460800 to 115200. And
> > explicitly overriding some previously initialized to 0 fields.
> 
> F81232 max baudrate is only 115200bps, so I set it for
> 1.8432MHz/16 = 115200.
> 
> We had add some closing time referenced from serial_core.c. The default
> value is:
> 
> port->close_delay     = HZ / 2;	/* .5 seconds */
> port->closing_wait    = 30 * HZ;/* 30 seconds */
> 
> We had increasing close_delay about 10x to
> 
> port->close_delay     = 5 * HZ ;

You're never changing anything, you're just reporting an incorrect value
to userspace here.

The value you should be returning is
jiffies_to_msecs(port->port.closing_wait) / 10, unless the value is
ASYNC_CLOSING_WAIT_NONE in which case you simply return that, and
similarly for close_delay.

> >> The f81232_set_mctrl() replace set_control_lines() to do MCR control
> >> so we clean-up the set_control_lines() function.
> >
> >     I don't see where are you doing this...
> >
> 
> This text is my patch V5 5/8 second section. I had wrong operation of 
> copy & paste. It's doesn't need for this patch, sorry for it.

Make sure to update the commit log for the next revision so that it
describes what you actually do.

I will probably not have time to review this version this week I'm
afraid.

Johan
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/