Re: [PATCH] staging: rtl8723au: Fix sparse warnings

From: Krzysztof Konopko
Date: Fri Dec 12 2014 - 17:55:15 EST

On 12/12/14 19:52, Jes Sorensen wrote:
> Larry Finger <Larry.Finger@xxxxxxxxxxxx> writes:
>> On 12/12/2014 05:35 AM, Krzysztof Konopko wrote:
>>> I was hunting particularly for inconsistencies with `sparse` and came
>>> across this one. But I dug a bit further and I wonder why the driver is
>>> not using standard stuff like the one in `include/linux/ieee80211.h`
>>> where any data wider than one byte is clearly declared as __le<nn>?
>> That is a good question. One possibility is that those definitions do
>> not exist on some of the older kernels that Realtek supports. They
>> generally work with 2.6.18 and newer.
> The reason the 8723au driver doesn't use the defines from there is that
> in ieee80211.h they are part of struct ieee80211_mgmt, while the 8723au
> driver access the addba etc. elements without the full struct in place.

And why is that the case?
(I'm trying to understand, not debunk)

Looks to me that this driver has been kept out of the tree for quite a
while (by Realtek) and now suffers from locally invented stuff. I
understand this is a lot of work to unify the codebase with ieee80211.h,
but are there any technical hurdles? I'm just curious.


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