linux-kernel - Re: [PATCH] rtlwifi: rtl8821ae: add in a missing break in switch statement

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Message-ID: <b0971d2219b7121d06fc2439922a2b759203dd2b.camel@perches.com>
Date:   Sat, 06 Oct 2018 15:03:19 -0700
From:   Joe Perches <joe@...ches.com>
To:     Larry Finger <Larry.Finger@...inger.net>,
        Kalle Valo <kvalo@...eaurora.org>,
        Colin King <colin.king@...onical.com>
Cc:     Ping-Ke Shih <pkshih@...ltek.com>,
        "David S . Miller" <davem@...emloft.net>,
        Tsang-Shian Lin <thlin@...ltek.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rtlwifi: rtl8821ae: add in a missing break in switch
 statement

On Sat, 2018-10-06 at 17:00 -0500, Larry Finger wrote:
> On 10/6/18 3:17 PM, Joe Perches wrote:
> > On Sat, 2018-10-06 at 15:05 -0500, Larry Finger wrote:
> > > On 10/6/18 2:30 PM, Kalle Valo wrote:
> > > > Colin King <colin.king@...onical.com> writes:
> > > > 
> > > > > From: Colin Ian King <colin.king@...onical.com>
> > > > > 
> > > > > The switch case RATR_INX_WIRELESS_MC has a missing break, this seems
> > > > > to be unintentional as the setting of variable ret gets overwritten
> > > > > when the case falls through to the following RATR_INX_WIRELESS_AC_5N
> > > > > case.  Fix this by adding in the missing break.
> > > > > 
> > > > > Detected by CoverityScan, CID#1167237 ("Missing break in switch")
> > > > > 
> > > > > Fixes: 3c05bedb5fef ("Staging: rtl8812ae: Add Realtek 8821 PCI WIFI driver")
> > > > > Signed-off-by: Colin Ian King <colin.king@...onical.com>
> > > > > ---
> > > > >    drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c | 1 +
> > > > 
> > > > Is the fixes line correct? This patch is not for staging.
> > > 
> > > No, the correct fixes commit is 21e4b0726dc67 (" rtlwifi: rtl8821ae: Move driver
> > > from staging to regular tree").
> > > 
> > > This driver was initially placed in staging as it was needed for a special
> > > project, which is the commit that Colin used. As the patch subject states, the
> > > driver was later moved to the regular wireless tree.
> > > 
> > > That break is required, thus ACKed-by: Larry Finger <Larry.Finger@...inger.net>
> > 
> > Why not remove this entirely and use the generic routine in
> > drivers/net/wireless/realtek/rtlwifi/base.c?
> > 
> > Is there a real difference?
> 
> I did not see any difference other than the removal of a bunch of magic numbers 
> and better formatting.

Me neither.