linux-kernel - Re: [ 019/150] serial_core: Fix type definition for PORT_BRCM

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Date:	Wed, 27 Feb 2013 16:39:06 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Ben Hutchings <ben@...adent.org.uk>
Cc:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Stephen Hurd <shurd@...adcom.com>,
	Michael Chan <mchan@...adcom.com>
Subject: Re: [ 019/150] serial_core: Fix type definition for
 PORT_BRCM_TRUMANAGE.

On Thu, Feb 28, 2013 at 12:05:59AM +0000, Ben Hutchings wrote:
> On Tue, 2013-02-26 at 15:54 -0800, Greg Kroah-Hartman wrote:
> > 3.8-stable review patch.  If anyone has any objections, please let me know.
> > 
> > ------------------
> > 
> > From: Michael Chan <mchan@...adcom.com>
> > 
> > commit 85f024401bf80746ae08b7fd5809a9b16accf0b1 upstream.
> > 
> > It was mistakenly defined to be 24 instead of the next higher number 25.
> > 
> > Reported-by: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
> > Cc: Stephen Hurd <shurd@...adcom.com>
> > Signed-off-by: Michael Chan <mchan@...adcom.com>
> > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> > 
> > ---
> >  include/uapi/linux/serial_core.h |    2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > --- a/include/uapi/linux/serial_core.h
> > +++ b/include/uapi/linux/serial_core.h
> > @@ -50,7 +50,7 @@
> >  #define PORT_LPC3220	22	/* NXP LPC32xx SoC "Standard" UART */
> >  #define PORT_8250_CIR	23	/* CIR infrared port, has its own driver */
> >  #define PORT_XR17V35X	24	/* Exar XR17V35x UARTs */
> > -#define PORT_BRCM_TRUMANAGE	24
> > +#define PORT_BRCM_TRUMANAGE	25
> >  #define PORT_MAX_8250	25	/* max port ID */
> >  
> >  /*
> 
> Hang on, this is a uapi header - are these numbers actually used by
> userland or are they really internal to the 8250 drivers?

Interesting, I think they are internal to the 8250 drivers, as I don't
see how the number can be exported to userspace.  So they should
probably be moved into 8250.c somewhere.

But I could be wrong, this code is so old it's scary, hopefully no one
really is using this number in userspace.

Only one way to find out, care to make up a patch for me to apply and
queue up for 3.10?

thanks,

greg k-h
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