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From: Peter Wu <peter@lekensteyn.nl>
To: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>,
	Chaoming Li <chaoming_li@realsil.com.cn>,
	"John W. Linville" <linville@tuxdriver.com>,
	linux-wireless@vger.kernel.org,
	Network Development <netdev@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] net: wireless: rtlwifi: rtl8192de: hw.c: Cleaning up conjunction always evaluates to false
Date: Sun, 08 Jun 2014 11:26:50 +0200	[thread overview]
Message-ID: <1436639.AmJiDmeQZF@al> (raw)
In-Reply-To: <5393A7D0.2080700@lwfinger.net>

On Saturday 07 June 2014 19:01:20 Larry Finger wrote:
> As you have learned here, automatically making changes suggested by some tool 
> may convert a visible bug into one that is invisible, and only found by a 
> detailed line-by-line examination of the code, and that is unlikely to happen. 
> Please be careful.
> 
>  From everything I see, the test in all drivers should be
> 
>         if ((bt_msr & MSR_AP) == MSR_AP)

That only happens to be case because MSR_INFRA | MSR_ADHOC == MSR_AP. This
seems to be the intent:

    #define MSR_MASK 0x03
    if ((bt_msr & MSR_MASK) == MSR_AP)

In rtl8192se, there are also MSR_LINK_... constants covering MSR_...
and in addition, there is a MSR_LINK_MASK. These macros are quite
redundant though given the other definitions, but the mask is still
nice to have I guess.

Also, personally I would submit just one patch touching all drivers, but
I see that Rickard has submitted a bunch of patches (without cover letter
either, making it more difficult to group them). What would you prefer,
a single patch touching multiple drivers (as the changes are mostly the
same) or split patches?

Kind regards,
Peter

  parent reply	other threads:[~2014-06-08  9:27 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-07 14:30 [PATCH] net: wireless: rtlwifi: rtl8192de: hw.c: Cleaning up conjunction always evaluates to false Rickard Strandqvist
2014-06-07 15:02 ` Peter Wu
2014-06-07 15:24   ` Rickard Strandqvist
2014-06-08  0:01     ` Larry Finger
2014-06-08  1:15       ` Rickard Strandqvist
2014-06-08  9:26       ` Peter Wu [this message]
2014-06-08 10:36         ` Rickard Strandqvist
2014-06-08 10:43           ` Peter Wu
2014-06-08 15:45             ` Larry Finger
     [not found] ` <CAFo99gZuPV=v1k90iPkAGVFrzVq-z=-h8UgD5a3VCN=wMDNU3w@mail.gmail.com>
     [not found]   ` <CAFo99gYCYkONL9dZYeHwuJKQTCgFQTmg1aAGZdFAOT=MNARh7Q@mail.gmail.com>
2014-06-10 21:52     ` Peter Wu

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