linux-kernel - Re: [GIT PULL 1/9] intel_th: msu: Fix unused variable warning on arm64 platform

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Date:   Wed, 3 Jul 2019 17:45:03 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org,
        Shaokun Zhang <zhangshaokun@...ilicon.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [GIT PULL 1/9] intel_th: msu: Fix unused variable warning on
 arm64 platform

On Thu, Jun 27, 2019 at 03:51:44PM +0300, Alexander Shishkin wrote:
> From: Shaokun Zhang <zhangshaokun@...ilicon.com>
> 
> Commit ba39bd8306057 ("intel_th: msu: Switch over to scatterlist")
> introduced the following warnings on non-x86 architectures, as a result
> of reordering the multi mode buffer allocation sequence:
> 
> > drivers/hwtracing/intel_th/msu.c: In function ‘msc_buffer_win_alloc’:
> > drivers/hwtracing/intel_th/msu.c:783:21: warning: unused variable ‘i’
> > [-Wunused-variable]
> > int ret = -ENOMEM, i;
> >                    ^
> > drivers/hwtracing/intel_th/msu.c: In function ‘msc_buffer_win_free’:
> > drivers/hwtracing/intel_th/msu.c:863:6: warning: unused variable ‘i’
> > [-Wunused-variable]
> > int i;
> >     ^
> 
> Fix this compiler warning by factoring out set_memory sequences and making
> them x86-only.
> 
> Suggested-by: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
> Signed-off-by: Shaokun Zhang <zhangshaokun@...ilicon.com>
> Fixes: ba39bd8306057 ("intel_th: msu: Switch over to scatterlist")
> Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> Signed-off-by: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
> ---
>  drivers/hwtracing/intel_th/msu.c | 40 +++++++++++++++++++++-----------
>  1 file changed, 27 insertions(+), 13 deletions(-)

Should be backported to stable trees, I'll add the tag...