linux-kernel - Re: [PATCH v4] drm/panfrost: fix -Wmissing-prototypes warnings

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Date:   Tue, 29 Oct 2019 13:25:55 -0500
From:   Rob Herring <robh@...nel.org>
To:     Yi Wang <wang.yi59@....com.cn>
Cc:     Steven Price <steven.price@....com>,
        Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        xue.zhihong@....com.cn, up2wing@...il.com, wang.liang82@....com.cn
Subject: Re: [PATCH v4] drm/panfrost: fix -Wmissing-prototypes warnings

On Mon, Oct 28, 2019 at 8:55 PM Yi Wang <wang.yi59@....com.cn> wrote:
>
> We get these warnings when build kernel W=1:
> drivers/gpu/drm/panfrost/panfrost_perfcnt.c:35:6: warning: no previous prototype for ‘panfrost_perfcnt_clean_cache_done’ [-Wmissing-prototypes]
> drivers/gpu/drm/panfrost/panfrost_perfcnt.c:40:6: warning: no previous prototype for ‘panfrost_perfcnt_sample_done’ [-Wmissing-prototypes]
> drivers/gpu/drm/panfrost/panfrost_perfcnt.c:190:5: warning: no previous prototype for ‘panfrost_ioctl_perfcnt_enable’ [-Wmissing-prototypes]
> drivers/gpu/drm/panfrost/panfrost_perfcnt.c:218:5: warning: no previous prototype for ‘panfrost_ioctl_perfcnt_dump’ [-Wmissing-prototypes]
> drivers/gpu/drm/panfrost/panfrost_perfcnt.c:250:6: warning: no previous prototype for ‘panfrost_perfcnt_close’ [-Wmissing-prototypes]
> drivers/gpu/drm/panfrost/panfrost_perfcnt.c:264:5: warning: no previous prototype for ‘panfrost_perfcnt_init’ [-Wmissing-prototypes]
> drivers/gpu/drm/panfrost/panfrost_perfcnt.c:320:6: warning: no previous prototype for ‘panfrost_perfcnt_fini’ [-Wmissing-prototypes]
> drivers/gpu/drm/panfrost/panfrost_mmu.c:227:6: warning: no previous prototype for ‘panfrost_mmu_flush_range’ [-Wmissing-prototypes]
> drivers/gpu/drm/panfrost/panfrost_mmu.c:435:5: warning: no previous prototype for ‘panfrost_mmu_map_fault_addr’ [-Wmissing-prototypes]
>
> For file panfrost_mmu.c, make functions static to fix this.
> For file panfrost_perfcnt.c, include header file can fix this.
>
> Signed-off-by: Yi Wang <wang.yi59@....com.cn>
> Reviewed-by: Steven Price <steven.price@....com>
> ---
>
> v4: make the parameters aligned.
>
> v3: using tab size of 8 other than 4.
>
> v2: align parameter line and modify comment. Thanks to Steve.
> ---
>  drivers/gpu/drm/panfrost/panfrost_mmu.c     | 9 +++++----
>  drivers/gpu/drm/panfrost/panfrost_perfcnt.c | 1 +
>  2 files changed, 6 insertions(+), 4 deletions(-)

v4 didn't seem to make it to the list yet (non-subscribers get
moderated) and I missed this. I applied v3 and fixed up the alignment.

Rob