netdev - Re: [PATCH staging] Add SBE 2T3E3 WAN driver

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Date:	Sat, 31 Jul 2010 23:31:22 +0200
From:	Krzysztof Halasa <khc@...waw.pl>
To:	Greg KH <greg@...ah.com>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH staging] Add SBE 2T3E3 WAN driver

Greg KH <greg@...ah.com> writes:

>>  include/linux/pci_ids.h              |    3 +
>
> First off, read the top of the pci_ids.h file, which says to not add new
> entries that are only used in a single driver.

These entries are also needed for the tulip Ethernet driver, to avoid
initializing these ports (they are using Tulip DECchips with custom FPGA
for HDLC). I posted a patch on netdev list.

> Secondly, why have this as a staging driver?  What is lacking in it to
> get it merged into the main kernel tree as a "normal" driver?

The main reason is the interface ("PRIVATE" netdev ioctls) for
controlling the hdlcX devices is not stable. The plan is to write a new
user-kernel interface for generic HDLC, this driver (and other ones)
will then use it. For now, there is a separate utility from SBE for this
card.

> Hint, you
> need a TODO file in the driver directory that lists the things left to
> be done to it to get it merged, and a name/email address to send the
> patches to.

Ok.

>> + * This code is based on a driver written by SBE Inc.
>
> What driver would that have been?  If it's based on someone else's work,
> it's nice to mention the copyright holders of that work you based yours
> on.

I don't have any details, I'm only told the driver is open-source and
the file name starts with SBE. No copyright notices except this one:

$ grep LIC *
linux_sbe2t3e3.c:MODULE_LICENSE("GPL");

BTW SBE Inc. (division?) has been acquired by One Stop Systems, they
seem to still sell this hw, but I can't see any drivers available for
downloading (though they mention "open source Linux drivers").

>> +#define DRV_NAME "SBE 2T3E3"
>
> spaces and all caps isn't the nicest thing for linux drivers, it does
> odd things in sysfs for some scripts (the space thing, not the
> uppercase.)

It seems the DRV_NAME is only used for various printk() and for
pci_request_regions(). Does it still cause problems?
-- 
Krzysztof Halasa
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