From: Magnus Damm <magnus.damm@gmail.com>
To: Greg KH <gregkh@linuxfoundation.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>,
linux-serial@vger.kernel.org, horms@verge.net.au, arnd@arndb.de,
linux-sh@vger.kernel.org, swarren@wwwdotorg.org,
linux-kernel@vger.kernel.org, rjw@sisk.pl, lethal@linux-sh.org,
olof@lixom.net, dan.j.williams@intel.com, alan@linux.intel.com
Subject: Re: [PATCH 06/06] serial8250-em: Add Emma Mobile UART driver
Date: Thu, 3 May 2012 21:19:40 +0900 [thread overview]
Message-ID: <CANqRtoR7rtJW65jY3urnTcaS5S6swY84C-Xa8NMQkZP66m+==w@mail.gmail.com> (raw)
In-Reply-To: <20120502212205.GA12212@kroah.com>
On Thu, May 3, 2012 at 6:22 AM, Greg KH <gregkh@linuxfoundation.org> wrote:
> On Wed, May 02, 2012 at 10:41:12AM -0400, Paul Gortmaker wrote:
>> On 12-05-02 08:47 AM, Magnus Damm wrote:
>> > From: Magnus Damm <damm@opensource.se>
>> >
>> > Add a platform driver for Emma Mobile 8250 hardware.
>>
>>
>> [...]
>>
>> > +
>> > +config SERIAL_8250_EM
>> > + tristate "Support for Emma Mobile intergrated serial port"
>> > + depends on SERIAL_8250
>>
>> Should we depend on arch=ARM or something similar? Even if the
>> driver is written to be arch independent, if the Emma itself is
>> physically tied to ARM platforms, we probably don't need to be
>> building it for sparc allyesconfig etc.
>
> Yeah, it doesn't build on x86-64, I get the following build problems:
> ERROR: "clk_get_rate" [drivers/tty/serial/8250/8250_em.ko] undefined!
> ERROR: "clk_enable" [drivers/tty/serial/8250/8250_em.ko] undefined!
> ERROR: "clk_get" [drivers/tty/serial/8250/8250_em.ko] undefined!
> ERROR: "clk_put" [drivers/tty/serial/8250/8250_em.ko] undefined!
> ERROR: "clk_disable" [drivers/tty/serial/8250/8250_em.ko] undefined!
>
> So it should depend on some arch that has clk at the least.
>
> Magnus, care to redo just this one patch that fixes this up? I've
> applied the first 5 already.
Done!
I decided to go with SERIAL_8250 && ARM && HAVE_CLK to limit the
exposure a bit but not hinder any single ARM kernel image work. Hope
this balance is making everyone happy.
It is not impossible that this driver can be used on older MIPS based
SoCs from NEC, but that can easily be dealt with later if needed.
Thanks for your help!
/ magnus
next prev parent reply other threads:[~2012-05-03 12:19 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-02 12:46 [PATCH 00/06] serial8250: DLL/DLM rework, Emma Mobile UART driver Magnus Damm
2012-05-02 12:46 ` [PATCH 01/06] serial8250: Add dl_read()/dl_write() callbacks Magnus Damm
2012-05-02 12:47 ` [PATCH 02/06] serial8250: Use dl_read()/dl_write() on Alchemy Magnus Damm
2012-05-02 12:47 ` [PATCH 03/06] serial8250: Use dl_read()/dl_write() on RM9K Magnus Damm
2012-05-02 12:47 ` [PATCH 04/06] serial8250: Clean up default map and dl code Magnus Damm
2012-05-02 12:47 ` [PATCH 05/06] serial8250: Introduce serial8250_register_8250_port() Magnus Damm
2012-05-02 12:47 ` [PATCH 06/06] serial8250-em: Add Emma Mobile UART driver Magnus Damm
2012-05-02 14:41 ` Paul Gortmaker
2012-05-02 21:22 ` Greg KH
2012-05-03 8:46 ` Arnd Bergmann
2012-05-03 12:19 ` Magnus Damm [this message]
2012-05-02 13:03 ` [PATCH 00/06] serial8250: DLL/DLM rework, " Alan Cox
2012-05-02 13:12 ` Arnd Bergmann
2012-05-04 16:28 ` Arnd Bergmann
2012-05-08 16:34 ` Magnus Damm
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