linux-kernel - Re: [PATCH] drm/amdkfd/kfd_mqd_manager_v10: Avoid fall-through warning

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Date:   Mon, 22 Jul 2019 15:13:44 -0400
From:   Alex Deucher <alexdeucher@...il.com>
To:     "Liu, Shaoyun" <Shaoyun.Liu@....com>
Cc:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        "Cox, Philip" <Philip.Cox@....com>,
        Oded Gabbay <oded.gabbay@...il.com>,
        "Deucher, Alexander" <Alexander.Deucher@....com>,
        "Koenig, Christian" <Christian.Koenig@....com>,
        "Zhou, David(ChunMing)" <David1.Zhou@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        "amd-gfx@...ts.freedesktop.org" <amd-gfx@...ts.freedesktop.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/amdkfd/kfd_mqd_manager_v10: Avoid fall-through warning

Applied.  Thanks!

Alex

On Mon, Jul 22, 2019 at 2:14 PM Liu, Shaoyun <Shaoyun.Liu@....com> wrote:
>
> Reviewed-by:  shaoyunl <shaoyun.liu@....com>
>
> On 2019-07-22 1:47 p.m., Gustavo A. R. Silva wrote:
> > In preparation to enabling -Wimplicit-fallthrough, this patch silences
> > the following warning:
> >
> > drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_mqd_manager_v10.c: In function ‘mqd_manager_init_v10’:
> > ./include/linux/dynamic_debug.h:122:52: warning: this statement may fall through [-Wimplicit-fallthrough=]
> >   #define __dynamic_func_call(id, fmt, func, ...) do { \
> >                                                      ^
> > ./include/linux/dynamic_debug.h:143:2: note: in expansion of macro ‘__dynamic_func_call’
> >    __dynamic_func_call(__UNIQUE_ID(ddebug), fmt, func, ##__VA_ARGS__)
> >    ^~~~~~~~~~~~~~~~~~~
> > ./include/linux/dynamic_debug.h:153:2: note: in expansion of macro ‘_dynamic_func_call’
> >    _dynamic_func_call(fmt, __dynamic_pr_debug,  \
> >    ^~~~~~~~~~~~~~~~~~
> > ./include/linux/printk.h:336:2: note: in expansion of macro ‘dynamic_pr_debug’
> >    dynamic_pr_debug(fmt, ##__VA_ARGS__)
> >    ^~~~~~~~~~~~~~~~
> > drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_mqd_manager_v10.c:432:3: note: in expansion of macro ‘pr_debug’
> >     pr_debug("%s@%i\n", __func__, __LINE__);
> >     ^~~~~~~~
> > drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_mqd_manager_v10.c:433:2: note: here
> >    case KFD_MQD_TYPE_COMPUTE:
> >    ^~~~
> >
> > by removing the call to pr_debug() in KFD_MQD_TYPE_CP:
> >
> > "The mqd init for CP and COMPUTE will have the same  routine." [1]
> >
> > This bug was found thanks to the ongoing efforts to enable
> > -Wimplicit-fallthrough.
> >
> > [1] https://lore.kernel.org/lkml/c735a1cc-a545-50fb-44e7-c0ad93ee8ee7@amd.com/
> >
> > Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
> > ---
> >   drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v10.c | 1 -
> >   1 file changed, 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v10.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v10.c
> > index 4f8a6ffc5775..9cd3eb2d90bd 100644
> > --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v10.c
> > +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v10.c
> > @@ -429,7 +429,6 @@ struct mqd_manager *mqd_manager_init_v10(enum KFD_MQD_TYPE type,
> >
> >       switch (type) {
> >       case KFD_MQD_TYPE_CP:
> > -             pr_debug("%s@%i\n", __func__, __LINE__);
> >       case KFD_MQD_TYPE_COMPUTE:
> >               pr_debug("%s@%i\n", __func__, __LINE__);
> >               mqd->allocate_mqd = allocate_mqd;
> _______________________________________________
> dri-devel mailing list
> dri-devel@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

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