linux-kernel - Re: [PATCH -next] tty/serial: atmel: Include module.h to fix build failure

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Date:	Tue, 12 Jan 2016 21:44:10 -0800
From:	Joe Perches <joe@...ches.com>
To:	Guenter Roeck <linux@...ck-us.net>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Sudip Mukherjee <sudipm.mukherjee@...il.com>,
	postmaster <postmaster@...r.kernel.org>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] tty/serial: atmel: Include module.h to fix build
 failure

On Tue, 2016-01-12 at 21:35 -0800, Guenter Roeck wrote:
> On 01/11/2016 07:08 AM, Paul Gortmaker wrote:
> > On 2016-01-11 06:11 AM, Guenter Roeck wrote:
> > > On Mon, Jan 11, 2016 at 02:05:36PM +0530, Sudip Mukherjee wrote:
> > > > On Sat, Jan 09, 2016 at 10:29:08AM -0800, Greg Kroah-Hartman wrote:
> > > > > On Sat, Jan 09, 2016 at 10:15:35AM -0800, Guenter Roeck wrote:
> > > > > > If serial/atmel_serial.c is compiled with devicetree enabled, the
> > > > > > following build error is observed.
> > > > > > 
> > > > > > drivers/tty/serial/atmel_serial.c:192:1: warning:
> > > > > > 	data definition has no type or storage class
> > > > > > drivers/tty/serial/atmel_serial.c:192:1: error:
> > > > > > 	type defaults to 'int' in declaration of 'MODULE_DEVICE_TABLE'
> > > > > > drivers/tty/serial/atmel_serial.c:192:1: warning:
> > > > > > 	parameter names (without types) in function declaration
> > > > > > 
> > > > > > MODULE_DEVICE_TABLE is used to specify devicetree compatibilities.
> > > > > > 
> > > > > > Fixes: c39dfebc7798 ("drivers/tty/serial: make serial/atmel_serial.c explicitly non-modular")
> > > > > > Cc: Paul Gortmaker <paul.gortmaker@...driver.com>
> > > > > > Signed-off-by: Guenter Roeck <linux@...ck-us.net>
> > > > > > ---
> > > > > >   drivers/tty/serial/atmel_serial.c | 1 +
> > > > > >   1 file changed, 1 insertion(+)
> > > > > 
> > > > > This hit my tree last night already with commit
> > > > > 041497eb721ddbdc1e690316976dd8ba7bc136a2, so all should be fine in the
> > > > > next linux-next release.
> > > > 
> > > > Hi Guenter,
> > > > Just a thought. It has happended many times that we both have sent
> > > > patches to fix the same build fail. Maybe your patch got applied and
> > > > mine came late or maybe mine was applied and you came late. But I think
> > > > if we have a separate mailing list where people interested to fix and
> > > > monitor build failures will be members and we Cc that list whenever we
> > > > send patch for build fail and then in that case we will know that
> > > > someone else has already sent a patch for this failure and we can invest
> > > > the time in some other problem.
> > > > 
> > > 
> > > Hi Sudip,
> > > 
> > > I agree, it would make sense to have a build(/runtime?)-fixes-only mailing
> > > list. Question though is how to limit noise on such a list and, of course,
> > > where and how to set it up. Any thoughts ?
> > 
> > Since most (all?) of these kind of fails are on linux-next, why not
> 
> Most or many, but not all.
> 
> > do what everyone else does, and report the fail there and/or ensure
> > the fix is cc'd there?   Before I waste time trying to fix sth on
> > linux-next, I always google for the error msg and many times that
> > leads me to a lkml or linux-next post where it was reported and
> > fixed already.
> 
> Many times, Sudip and I end up fixing problems literally in parallel,
> and it happened quite often lately that we do send patches in parallel.
> Even if I do a Google search for an error message, it happens quite
> often that I get no results, yet the fix is already out there on
> some list.
> 
> Sudip, one option would be to set up a semi-private mailing list.
> My build tests now have a dedicated virtual host (kerneltests.org).
> I could set up a managed list there.

Perhaps it'd be better to have something like linux-build-failures@...r.kernel.org