netdev - Re: [PATCH 6/8] net: ethernet driver: Fujitsu OGMA

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Date:	Mon, 14 Jul 2014 18:36:11 +0800
From:	Andy Green <andy.green@...aro.org>
To:	Tobias Klauser <tklauser@...tanz.ch>
Cc:	Mollie Wu <mollie.wu@...aro.org>,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	netdev <netdev@...r.kernel.org>,
	Patch Tracking <patches@...aro.org>,
	Jaswinder Singh <jaswinder.singh@...aro.org>,
	linux@....linux.org.uk, arnd@...db.de,
	Olof Johansson <olof@...om.net>, mark.rutland@....com,
	robh+dt@...nel.org, pawel.moll@....com,
	David Miller <davem@...emloft.net>,
	Stephen Hemminger <stephen@...workplumber.org>,
	Florian Fainelli <f.fainelli@...il.com>,
	Francois Romieu <romieu@...zoreil.com>,
	Tetsuya Takinishi <t.takinishi@...fujitsu.com>
Subject: Re: [PATCH 6/8] net: ethernet driver: Fujitsu OGMA

On 14 July 2014 17:06, Tobias Klauser <tklauser@...tanz.ch> wrote:
> On 2014-07-13 at 08:31:47 +0200, Mollie Wu <mollie.wu@...aro.org> wrote:
>> This driver adds support for "ogma", a Fujitsu Semiconductor Ltd IP Gigabit
>> Ethernet + PHY IP used in a variety of their ARM-based ASICs.
>>
>> This is being sent as part of a series including the arch support that uses it,
>> Fujitsu mb86s7x.
>>
>> This driver was originally written by guys inside Fujitsu as an abstracted
>> "you can build this for Windows as well" type code, I've removed all that,
>> modernized various things, added runtime_pm, and ported it to work with
>> Device Tree, using only the bindings already mentioned in
>>
>> ./Documentation/devicetree/bindings/net/ethernet.txt
>>
>> Bindings documentation is added by this patch.
>>
>> Signed-off-by: Andy Green <andy.green@...aro.org>
>> Signed-off-by: Tetsuya Takinishi <t.takinishi@...fujitsu.com>
>> Signed-off-by: Mollie Wu <mollie.wu@...aro.org>
>> ---
>>  .../devicetree/bindings/net/fujitsu-ogma.txt       |  43 ++
>>  drivers/net/ethernet/fujitsu/Kconfig               |  12 +
>>  drivers/net/ethernet/fujitsu/Makefile              |   1 +
>>  drivers/net/ethernet/fujitsu/ogma/Makefile         |   6 +
>>  drivers/net/ethernet/fujitsu/ogma/ogma.h           | 380 +++++++++++++
>>  .../ethernet/fujitsu/ogma/ogma_desc_ring_access.c  | 627 +++++++++++++++++++++
>>  drivers/net/ethernet/fujitsu/ogma/ogma_ethtool.c   |  95 ++++
>>  .../net/ethernet/fujitsu/ogma/ogma_gmac_access.c   | 295 ++++++++++
>>  drivers/net/ethernet/fujitsu/ogma/ogma_netdev.c    | 592 +++++++++++++++++++
>>  drivers/net/ethernet/fujitsu/ogma/ogma_platform.c  | 333 +++++++++++
>>  10 files changed, 2384 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/net/fujitsu-ogma.txt
>>  create mode 100644 drivers/net/ethernet/fujitsu/ogma/Makefile
>>  create mode 100644 drivers/net/ethernet/fujitsu/ogma/ogma.h
>>  create mode 100644 drivers/net/ethernet/fujitsu/ogma/ogma_desc_ring_access.c
>>  create mode 100644 drivers/net/ethernet/fujitsu/ogma/ogma_ethtool.c
>>  create mode 100644 drivers/net/ethernet/fujitsu/ogma/ogma_gmac_access.c
>>  create mode 100644 drivers/net/ethernet/fujitsu/ogma/ogma_netdev.c
>>  create mode 100644 drivers/net/ethernet/fujitsu/ogma/ogma_platform.c
>
> [...]
>
>> diff --git a/drivers/net/ethernet/fujitsu/ogma/ogma_platform.c b/drivers/net/ethernet/fujitsu/ogma/ogma_platform.c
>> new file mode 100644
>> index 0000000..09071da
>> --- /dev/null
>> +++ b/drivers/net/ethernet/fujitsu/ogma/ogma_platform.c
>
> [...]
>
>> +#ifdef CONFIG_PM
>> +static const struct dev_pm_ops ogma_pm_ops = {
>> +     SET_SYSTEM_SLEEP_PM_OPS(ogma_pm_suspend, ogma_pm_resume)
>> +     SET_RUNTIME_PM_OPS(ogma_runtime_suspend, ogma_runtime_resume, NULL)
>> +};
>> +#endif
>
> #ifdef CONFIG_PM can be omitted here since
> SET_{SYSTEM_SLEEP,RUNTIME}_PM_OPS will just evaluate empty if CONFIG_PM
> is not defined.
>
>> +
>> +static const struct of_device_id ogma_dt_ids[] = {
>> +     {.compatible = "fujitsu,ogma"},
>> +     { /* sentinel */ }
>> +};
>> +
>> +MODULE_DEVICE_TABLE(of, ogma_dt_ids);
>> +
>> +static struct platform_driver ogma_driver = {
>> +     .probe = ogma_probe,
>> +     .remove = ogma_remove,
>> +     .driver = {
>> +             .name = "ogma",
>> +             .of_match_table = ogma_dt_ids,
>> +#ifdef CONFIG_PM
>> +             .pm = &ogma_pm_ops,
>> +#endif
>
> With the above #ifdef CONFIG_PM removed, ogma_pm_ops will be all NULL if
> CONFIG_PM is not set. Thus, the #ifdef can be removed as well.

OK will fix, thanks.

-Andy

>> +             },
>> +};
>> +
>> +module_platform_driver(ogma_driver);
>> +
>> +MODULE_AUTHOR("Fujitsu Semiconductor Ltd");
>> +MODULE_DESCRIPTION("OGMA Ethernet driver");
>> +MODULE_LICENSE("GPL");
>> +
>> +MODULE_ALIAS("platform:ogma");
>> --
>> 1.8.1.2
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