linux-kernel - Re: [PATCH v2 1/2] coresight: Include required headers in C files

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Date:   Wed, 29 Apr 2020 11:31:05 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Mathieu Poirier <mathieu.poirier@...aro.org>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Douglas Anderson <dianders@...omium.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>
Subject: Re: [PATCH v2 1/2] coresight: Include required headers in C files

Quoting Mathieu Poirier (2020-04-29 11:08:18)
> Hi Stephen,
> 
> On Tue, Apr 28, 2020 at 11:10:09AM -0700, Stephen Boyd wrote:
> > diff --git a/drivers/hwtracing/coresight/coresight-cti-sysfs.c b/drivers/hwtracing/coresight/coresight-cti-sysfs.c
> > index aeea39cbd161..77e14e770806 100644
> > --- a/drivers/hwtracing/coresight/coresight-cti-sysfs.c
> > +++ b/drivers/hwtracing/coresight/coresight-cti-sysfs.c
> > @@ -4,7 +4,14 @@
> >   * Author: Mike Leach <mike.leach@...aro.org>
> >   */
> >  
> > +#include <linux/atomic.h>
> >  #include <linux/coresight.h>
> > +#include <linux/device.h>
> > +#include <linux/io.h>
> > +#include <linux/kernel.h>
> > +#include <linux/slab.h>
> > +#include <linux/spinlock.h>
> > +#include <linux/sysfs.h>
> 
> What is io.h and slab.h used for in coresight-cti-sysfs.c ?

io.h is for readl_relaxed() usage in this file. I added slab for the
devm_kcalloc() but it doesn't look necessary given that device.h is
where that is defined, not slab.h. Thanks for catching that!

> 
> >  
> >  #include "coresight-cti.h"
> >  
> > diff --git a/drivers/hwtracing/coresight/coresight-cti.c b/drivers/hwtracing/coresight/coresight-cti.c
> > index 7fc1fc8d7738..be61c1705916 100644
> > --- a/drivers/hwtracing/coresight/coresight-cti.c
> > +++ b/drivers/hwtracing/coresight/coresight-cti.c
> > @@ -4,7 +4,20 @@
> >   * Author: Mike Leach <mike.leach@...aro.org>
> >   */
> >  
> > +#include <linux/amba/bus.h>
> > +#include <linux/atomic.h>
> > +#include <linux/bits.h>
> > +#include <linux/coresight.h>
> > +#include <linux/device.h>
> > +#include <linux/io.h>
> 
> Same comment as above.
> 
> No need to send another version if these are mistakes - just let me know and
> I'll do the adjustment.
> 

Same here, io.h is for the readl_relaxed() and writel_relaxed() calls.

So please remove slab.h from the two files (but not the other one) when
applying. Thanks.