linux-kernel - Re: [PATCH 0/6] staging: r8188eu: some rx cleanups

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Date:   Wed, 16 Mar 2022 07:39:49 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Martin Kaiser <lists@...ser.cx>
Cc:     Larry Finger <Larry.Finger@...inger.net>,
        Phillip Potter <phil@...lpotter.co.uk>,
        Michael Straube <straube.linux@...il.com>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/6] staging: r8188eu: some rx cleanups

On Tue, Mar 15, 2022 at 09:55:28PM +0100, Martin Kaiser wrote:
> Thus wrote Greg Kroah-Hartman (gregkh@...uxfoundation.org):
> 
> > On Sat, Mar 05, 2022 at 07:53:45PM +0100, Martin Kaiser wrote:
> > > Here's another set with simple cleanups in the code for receiving frames.
> 
> > > Martin Kaiser (6):
> > >   staging: r8188eu: remove unnecessary initializations
> > >   staging: r8188eu: remove three unused receive defines
> > >   staging: r8188eu: remove unused function prototype
> > >   staging: r8188eu: make rtl8188e_process_phy_info static
> > >   staging: r8188eu: remove some unused local ieee80211 macros
> > >   staging: r8188eu: remove local BIT macro
> 
> > >  drivers/staging/r8188eu/hal/rtl8188e_rxdesc.c |  6 +---
> > >  .../staging/r8188eu/include/rtl8188e_recv.h   |  6 ----
> > >  drivers/staging/r8188eu/include/wifi.h        | 34 +------------------
> > >  3 files changed, 2 insertions(+), 44 deletions(-)
> 
> > > -- 
> > > 2.30.2
> 
> 
> 
> > This series breaks the build:
> 
> on x86_64 - and I tested only on arm32 :-(
> 
> > drivers/staging/r8188eu/core/rtw_wlan_util.c: In function ‘update_IOT_info’:
> > drivers/staging/r8188eu/core/rtw_wlan_util.c:1279:42: error: conversion from ‘long unsigned int’ to ‘u32’ {aka ‘unsigned int’} changes value from ‘18446744073709551611’ to ‘4294967291’ [-Werror=overflow]
> >  1279 |                 Switch_DM_Func(padapter, (~DYNAMIC_BB_DYNAMIC_TXPWR), false);
> >       |                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~
> > drivers/staging/r8188eu/core/rtw_wlan_util.c:1285:42: error: conversion from ‘long unsigned int’ to ‘u32’ {aka ‘unsigned int’} changes value from ‘18446744073709551611’ to ‘4294967291’ [-Werror=overflow]
> >  1285 |                 Switch_DM_Func(padapter, (~DYNAMIC_BB_DYNAMIC_TXPWR), false);
> >       |                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~
> > cc1: all warnings being treated as errors
> 
> > I'm going to drop it from my queue now.
> 
> The driver's BIT(x) macro was 1 << (x), the "global" one uses 1UL << (x).
> DYNAMIC_BB_DYNAMIC_TXPWR needs a cast to u32. I've just sent v2.

There shouldn't need to be a cast when using the BIT macro, so be
careful...