linux-kernel - Re: [PATCH v2 1/2] Staging: comedi: introduce {outl,inl}_amcc() and {outl,inl}_iobase() helper functions in hwdrv

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Message-ID: <1393997718.25929.YahooMailNeo@web164002.mail.gq1.yahoo.com>
Date:	Tue, 4 Mar 2014 21:35:18 -0800 (PST)
From:	Chase Southwood <chase.southwood@...oo.com>
To:	Greg KH <gregkh@...uxfoundation.org>,
	Dan Carpenter <dan.carpenter@...cle.com>
Cc:	"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
	"abbotti@....co.uk" <abbotti@....co.uk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] Staging: comedi: introduce {outl,inl}_amcc() and {outl,inl}_iobase() helper functions in hwdrv_apci1564.c

>On Tuesday, March 4, 2014 6:38 PM, Greg KH <gregkh@...uxfoundation.org> wrote:

>>On Mon, Mar 03, 2014 at 12:27:55PM +0300, Dan Carpenter wrote:
>>> On Sun, Mar 02, 2014 at 08:52:19PM -0600, Chase Southwood wrote:
>>> This patch introduces a few simple outl and inl helper functions to allow
>>> several lines which violate the character limit to be shortened
>>> appropriately.  It also changes a few macro values which represented
>>> offset values from a single unique base value to instead represent the value
>>> of that base plus the offset.  This is to simplify the use of these macros
>>> in the new helper functions.
>>> 
>>> Cc: Dan Carpenter <dan.carpenter@...cle.com>
>>> Signed-off-by: Chase Southwood <chase.southwood@...oo.com>
>>> ---
>>> 
>>> All right, here's another shot at this.  Dan, I took your outl_amcc idea
>>> and did a version for the outl/inl calls based from devpriv->iobase as well.
>>> I changed all of the macros which only offset from one base value as you
>>> had mentioned as well, and the result is starting to look very good.
>>> The only outl/inl calls which still look a little gross (see PATCH v2 2/2) are
>>> the ones involving DIGITAL_OP_WATCHDOG, TIMER, or any of the COUNTER macros,
>>> just because they use a common set of offset macros so simplifying
>>> those calls in the same way as the rest isn't possible.  What are your
>>> thoughts on this version of the patchset?
>>> 
>>> This is version 2 of [PATCH 1/2] Staging: comedi: introduce outl_1564_* and
>>> inl_1564_* helper functions in hwdrv_apci1564.c
>>> 
>>> 2: Changed helper functions from {outl,inl}_1564_*() to
>>> {outl,inl}_{amcc,iobase}()
>>> 
>>> Comments welcome!
>>> 
>>>  .../comedi/drivers/addi-data/hwdrv_apci1564.c      | 38 +++++++++++++++++-----
>>>  1 file changed, 30 insertions(+), 8 deletions(-)
>>> 
>>> diff --git a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c
>>> index 2b47fa1..58e301d 100644
>>> --- a/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c
>>> +++ b/drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c
>>> @@ -49,25 +49,25 @@ This program is distributed in the hope that it will be useful, but WITHOUT ANY
>>>  /* DIGITAL INPUT-OUTPUT DEFINE */
>>>  /* Input defines */
>>>  #define APCI1564_DIGITAL_IP                0x04
>>> -#define APCI1564_DIGITAL_IP_INTERRUPT_MODE1        4
>>> -#define APCI1564_DIGITAL_IP_INTERRUPT_MODE2        8
>>> -#define APCI1564_DIGITAL_IP_IRQ                16
>>> +#define APCI1564_DIGITAL_IP_INTERRUPT_MODE1        (0x04 + 0x04)
>>> +#define APCI1564_DIGITAL_IP_INTERRUPT_MODE2        (0x04 + 0x08)
>>> +#define APCI1564_DIGITAL_IP_IRQ                (0x04 + 0x10)
>> 
>> You can't change these without changing the callers.  This bit needs to
>> be in patch 2/2.  You should probably just merge both patches anyway
>> because presumably this one adds some GCC warnings about unused static
>> functions.>
>
>I'm totally confused about this series...
>
>Chase, can you resend any outstanding patches that I haven't applied of
>yours, as these different revisions and threads don't make much sense
>right now.
>

Greg,
Yes, admittedly this whole thing has gotten a little messy :P sorry for all the confusion.
I've finally spoken with Hartley about how to best clean this driver, and so I will submit
a final patchset to you as soon as I finish up with it.  Until then, please just disregard
all prior patches to hwdrv_apci1564.c from me, as the one I send next will supersede all of them
and I will clearly mark it as such for you.

Thanks,
Chase

>
>thanks,
>
>greg k-h
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