[PATCH] drm/imx: move 'legacyfb_depth' definition out of #ifdef

[PATCH] drm/imx: move 'legacyfb_depth' definition out of #ifdef

[Arnd Bergmann]

The variable is now referenced unconditionally, but still
declared in an #ifdef:

drivers/gpu/drm/imx/imx-drm-core.c: In function 'imx_drm_bind':
drivers/gpu/drm/imx/imx-drm-core.c:264:6: error: 'legacyfb_depth' undeclared (first use in this function); did you mean 'lockdep_depth'?

Remove the #ifdef so it can always be accessed.

Fixes: f53705fd9803 ("drm/imx: Use drm_fbdev_generic_setup()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/gpu/drm/imx/imx-drm-core.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
index a70f3131a377..0e6942f21a4e 100644
--- a/drivers/gpu/drm/imx/imx-drm-core.c
+++ b/drivers/gpu/drm/imx/imx-drm-core.c
@@ -35,10 +35,8 @@
 
 #define MAX_CRTC	4
 
-#if IS_ENABLED(CONFIG_DRM_FBDEV_EMULATION)
 static int legacyfb_depth = 16;
 module_param(legacyfb_depth, int, 0444);
-#endif
 
 DEFINE_DRM_GEM_CMA_FOPS(imx_drm_driver_fops);
 
-- 
2.18.0

Re: [PATCH] drm/imx: move 'legacyfb_depth' definition out of #ifdef

[Noralf Trønnes]

Den 02.10.2018 22.58, skrev Arnd Bergmann:
> The variable is now referenced unconditionally, but still
> declared in an #ifdef:
>
> drivers/gpu/drm/imx/imx-drm-core.c: In function 'imx_drm_bind':
> drivers/gpu/drm/imx/imx-drm-core.c:264:6: error: 'legacyfb_depth' undeclared (first use in this function); did you mean 'lockdep_depth'?
>
> Remove the #ifdef so it can always be accessed.
>
> Fixes: f53705fd9803 ("drm/imx: Use drm_fbdev_generic_setup()")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---

I've already applied the previous one you sent:
https://cgit.freedesktop.org/drm/drm-misc/commit/?id=064b06bbf117f8b5e64a5143e970d5a1cf602fd6

Not sure when it reaches linux-next now that we are past rc6.

Noralf.

>   drivers/gpu/drm/imx/imx-drm-core.c | 2 --
>   1 file changed, 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
> index a70f3131a377..0e6942f21a4e 100644
> --- a/drivers/gpu/drm/imx/imx-drm-core.c
> +++ b/drivers/gpu/drm/imx/imx-drm-core.c
> @@ -35,10 +35,8 @@
>   
>   #define MAX_CRTC	4
>   
> -#if IS_ENABLED(CONFIG_DRM_FBDEV_EMULATION)
>   static int legacyfb_depth = 16;
>   module_param(legacyfb_depth, int, 0444);
> -#endif
>   
>   DEFINE_DRM_GEM_CMA_FOPS(imx_drm_driver_fops);
>   

Re: [PATCH] drm/imx: move 'legacyfb_depth' definition out of #ifdef

[Noralf Trønnes]

Den 02.10.2018 22.58, skrev Arnd Bergmann:
> The variable is now referenced unconditionally, but still
> declared in an #ifdef:
>
> drivers/gpu/drm/imx/imx-drm-core.c: In function 'imx_drm_bind':
> drivers/gpu/drm/imx/imx-drm-core.c:264:6: error: 'legacyfb_depth' undeclared (first use in this function); did you mean 'lockdep_depth'?
>
> Remove the #ifdef so it can always be accessed.
>
> Fixes: f53705fd9803 ("drm/imx: Use drm_fbdev_generic_setup()")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---

I've already applied the previous one you sent:
https://cgit.freedesktop.org/drm/drm-misc/commit/?id=064b06bbf117f8b5e64a5143e970d5a1cf602fd6

Not sure when it reaches linux-next now that we are past rc6.

Noralf.

>   drivers/gpu/drm/imx/imx-drm-core.c | 2 --
>   1 file changed, 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
> index a70f3131a377..0e6942f21a4e 100644
> --- a/drivers/gpu/drm/imx/imx-drm-core.c
> +++ b/drivers/gpu/drm/imx/imx-drm-core.c
> @@ -35,10 +35,8 @@
>   
>   #define MAX_CRTC	4
>   
> -#if IS_ENABLED(CONFIG_DRM_FBDEV_EMULATION)
>   static int legacyfb_depth = 16;
>   module_param(legacyfb_depth, int, 0444);
> -#endif
>   
>   DEFINE_DRM_GEM_CMA_FOPS(imx_drm_driver_fops);
>   

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Re: [PATCH] drm/imx: move 'legacyfb_depth' definition out of #ifdef

[Daniel Vetter]

On Wed, Oct 03, 2018 at 05:49:32PM +0200, Noralf Trønnes wrote:
> 
> 
> Den 02.10.2018 22.58, skrev Arnd Bergmann:
> > The variable is now referenced unconditionally, but still
> > declared in an #ifdef:
> > 
> > drivers/gpu/drm/imx/imx-drm-core.c: In function 'imx_drm_bind':
> > drivers/gpu/drm/imx/imx-drm-core.c:264:6: error: 'legacyfb_depth' undeclared (first use in this function); did you mean 'lockdep_depth'?
> > 
> > Remove the #ifdef so it can always be accessed.
> > 
> > Fixes: f53705fd9803 ("drm/imx: Use drm_fbdev_generic_setup()")
> > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> > ---
> 
> I've already applied the previous one you sent:
> https://cgit.freedesktop.org/drm/drm-misc/commit/?id=064b06bbf117f8b5e64a5143e970d5a1cf602fd6
> 
> Not sure when it reaches linux-next now that we are past rc6.

Only once we're past -rc1.
-Daniel

> 
> Noralf.
> 
> >   drivers/gpu/drm/imx/imx-drm-core.c | 2 --
> >   1 file changed, 2 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
> > index a70f3131a377..0e6942f21a4e 100644
> > --- a/drivers/gpu/drm/imx/imx-drm-core.c
> > +++ b/drivers/gpu/drm/imx/imx-drm-core.c
> > @@ -35,10 +35,8 @@
> >   #define MAX_CRTC	4
> > -#if IS_ENABLED(CONFIG_DRM_FBDEV_EMULATION)
> >   static int legacyfb_depth = 16;
> >   module_param(legacyfb_depth, int, 0444);
> > -#endif
> >   DEFINE_DRM_GEM_CMA_FOPS(imx_drm_driver_fops);
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

Re: [PATCH] drm/imx: move 'legacyfb_depth' definition out of #ifdef

[Arnd Bergmann]

On Wed, Oct 3, 2018 at 6:13 PM Daniel Vetter <daniel@ffwll.ch> wrote:
>
> On Wed, Oct 03, 2018 at 05:49:32PM +0200, Noralf Trønnes wrote:
> >
> >
> > Den 02.10.2018 22.58, skrev Arnd Bergmann:
> > > The variable is now referenced unconditionally, but still
> > > declared in an #ifdef:
> > >
> > > drivers/gpu/drm/imx/imx-drm-core.c: In function 'imx_drm_bind':
> > > drivers/gpu/drm/imx/imx-drm-core.c:264:6: error: 'legacyfb_depth' undeclared (first use in this function); did you mean 'lockdep_depth'?
> > >
> > > Remove the #ifdef so it can always be accessed.
> > >
> > > Fixes: f53705fd9803 ("drm/imx: Use drm_fbdev_generic_setup()")
> > > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> > > ---
> >
> > I've already applied the previous one you sent:
> > https://cgit.freedesktop.org/drm/drm-misc/commit/?id=064b06bbf117f8b5e64a5143e970d5a1cf602fd6
> >
> > Not sure when it reaches linux-next now that we are past rc6.
>
> Only once we're past -rc1.

Can we revert f53705fd9803 in linux-next then to prevent the regression from
making it into 4.20?

       Arnd

Re: [PATCH] drm/imx: move 'legacyfb_depth' definition out of #ifdef

[Arnd Bergmann]

On Wed, Oct 3, 2018 at 6:13 PM Daniel Vetter <daniel@ffwll.ch> wrote:
>
> On Wed, Oct 03, 2018 at 05:49:32PM +0200, Noralf Trønnes wrote:
> >
> >
> > Den 02.10.2018 22.58, skrev Arnd Bergmann:
> > > The variable is now referenced unconditionally, but still
> > > declared in an #ifdef:
> > >
> > > drivers/gpu/drm/imx/imx-drm-core.c: In function 'imx_drm_bind':
> > > drivers/gpu/drm/imx/imx-drm-core.c:264:6: error: 'legacyfb_depth' undeclared (first use in this function); did you mean 'lockdep_depth'?
> > >
> > > Remove the #ifdef so it can always be accessed.
> > >
> > > Fixes: f53705fd9803 ("drm/imx: Use drm_fbdev_generic_setup()")
> > > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> > > ---
> >
> > I've already applied the previous one you sent:
> > https://cgit.freedesktop.org/drm/drm-misc/commit/?id=064b06bbf117f8b5e64a5143e970d5a1cf602fd6
> >
> > Not sure when it reaches linux-next now that we are past rc6.
>
> Only once we're past -rc1.

Can we revert f53705fd9803 in linux-next then to prevent the regression from
making it into 4.20?

       Arnd
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dri-devel mailing list
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https://lists.freedesktop.org/mailman/listinfo/dri-devel

Re: [PATCH] drm/imx: move 'legacyfb_depth' definition out of #ifdef

[Daniel Vetter]

On Wed, Oct 3, 2018 at 9:51 PM Arnd Bergmann <arnd@arndb.de> wrote:
>
> On Wed, Oct 3, 2018 at 6:13 PM Daniel Vetter <daniel@ffwll.ch> wrote:
> >
> > On Wed, Oct 03, 2018 at 05:49:32PM +0200, Noralf Trønnes wrote:
> > >
> > >
> > > Den 02.10.2018 22.58, skrev Arnd Bergmann:
> > > > The variable is now referenced unconditionally, but still
> > > > declared in an #ifdef:
> > > >
> > > > drivers/gpu/drm/imx/imx-drm-core.c: In function 'imx_drm_bind':
> > > > drivers/gpu/drm/imx/imx-drm-core.c:264:6: error: 'legacyfb_depth' undeclared (first use in this function); did you mean 'lockdep_depth'?
> > > >
> > > > Remove the #ifdef so it can always be accessed.
> > > >
> > > > Fixes: f53705fd9803 ("drm/imx: Use drm_fbdev_generic_setup()")
> > > > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> > > > ---
> > >
> > > I've already applied the previous one you sent:
> > > https://cgit.freedesktop.org/drm/drm-misc/commit/?id=064b06bbf117f8b5e64a5143e970d5a1cf602fd6
> > >
> > > Not sure when it reaches linux-next now that we are past rc6.
> >
> > Only once we're past -rc1.
>
> Can we revert f53705fd9803 in linux-next then to prevent the regression from
> making it into 4.20?

Probably simpler to cherry pick the fix from drm-misc-next to
drm-misc-next-fixes. Noralf, can you pls do that?

Thanks, Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch

Re: [PATCH] drm/imx: move 'legacyfb_depth' definition out of #ifdef

[Noralf Trønnes]

Den 04.10.2018 09.48, skrev Daniel Vetter:
> On Wed, Oct 3, 2018 at 9:51 PM Arnd Bergmann <arnd@arndb.de> wrote:
>> On Wed, Oct 3, 2018 at 6:13 PM Daniel Vetter <daniel@ffwll.ch> wrote:
>>> On Wed, Oct 03, 2018 at 05:49:32PM +0200, Noralf Trønnes wrote:
>>>>
>>>> Den 02.10.2018 22.58, skrev Arnd Bergmann:
>>>>> The variable is now referenced unconditionally, but still
>>>>> declared in an #ifdef:
>>>>>
>>>>> drivers/gpu/drm/imx/imx-drm-core.c: In function 'imx_drm_bind':
>>>>> drivers/gpu/drm/imx/imx-drm-core.c:264:6: error: 'legacyfb_depth' undeclared (first use in this function); did you mean 'lockdep_depth'?
>>>>>
>>>>> Remove the #ifdef so it can always be accessed.
>>>>>
>>>>> Fixes: f53705fd9803 ("drm/imx: Use drm_fbdev_generic_setup()")
>>>>> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
>>>>> ---
>>>> I've already applied the previous one you sent:
>>>> https://cgit.freedesktop.org/drm/drm-misc/commit/?id=064b06bbf117f8b5e64a5143e970d5a1cf602fd6
>>>>
>>>> Not sure when it reaches linux-next now that we are past rc6.
>>> Only once we're past -rc1.
>> Can we revert f53705fd9803 in linux-next then to prevent the regression from
>> making it into 4.20?
> Probably simpler to cherry pick the fix from drm-misc-next to
> drm-misc-next-fixes. Noralf, can you pls do that?

Would this be the correct procudure:

     dim update-branches
     dim create-workdir drm-misc-next-fixes
     <build>
     CONFIG_DRM_FBDEV_EMULATION=n
     <build will break>
     git cherry-pick 064b06bbf117f8b5e64a5143e970d5a1cf602fd6
     <build passes>
     dim push-branch drm-misc-next-fixes

I read that cherry picking creates a new commit with a new hash.
But since you ask me to do this, I assume git will handle this when
branches are merged?

Noralf.

Re: [PATCH] drm/imx: move 'legacyfb_depth' definition out of #ifdef

[Noralf Trønnes]

Den 04.10.2018 09.48, skrev Daniel Vetter:
> On Wed, Oct 3, 2018 at 9:51 PM Arnd Bergmann <arnd@arndb.de> wrote:
>> On Wed, Oct 3, 2018 at 6:13 PM Daniel Vetter <daniel@ffwll.ch> wrote:
>>> On Wed, Oct 03, 2018 at 05:49:32PM +0200, Noralf Trønnes wrote:
>>>>
>>>> Den 02.10.2018 22.58, skrev Arnd Bergmann:
>>>>> The variable is now referenced unconditionally, but still
>>>>> declared in an #ifdef:
>>>>>
>>>>> drivers/gpu/drm/imx/imx-drm-core.c: In function 'imx_drm_bind':
>>>>> drivers/gpu/drm/imx/imx-drm-core.c:264:6: error: 'legacyfb_depth' undeclared (first use in this function); did you mean 'lockdep_depth'?
>>>>>
>>>>> Remove the #ifdef so it can always be accessed.
>>>>>
>>>>> Fixes: f53705fd9803 ("drm/imx: Use drm_fbdev_generic_setup()")
>>>>> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
>>>>> ---
>>>> I've already applied the previous one you sent:
>>>> https://cgit.freedesktop.org/drm/drm-misc/commit/?id=064b06bbf117f8b5e64a5143e970d5a1cf602fd6
>>>>
>>>> Not sure when it reaches linux-next now that we are past rc6.
>>> Only once we're past -rc1.
>> Can we revert f53705fd9803 in linux-next then to prevent the regression from
>> making it into 4.20?
> Probably simpler to cherry pick the fix from drm-misc-next to
> drm-misc-next-fixes. Noralf, can you pls do that?

Would this be the correct procudure:

     dim update-branches
     dim create-workdir drm-misc-next-fixes
     <build>
     CONFIG_DRM_FBDEV_EMULATION=n
     <build will break>
     git cherry-pick 064b06bbf117f8b5e64a5143e970d5a1cf602fd6
     <build passes>
     dim push-branch drm-misc-next-fixes

I read that cherry picking creates a new commit with a new hash.
But since you ask me to do this, I assume git will handle this when
branches are merged?

Noralf.

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Re: [PATCH] drm/imx: move 'legacyfb_depth' definition out of #ifdef

[Arnd Bergmann]

On Thu, Oct 4, 2018 at 4:43 PM Noralf Trønnes <noralf@tronnes.org> wrote:
> Den 04.10.2018 09.48, skrev Daniel Vetter:
> > On Wed, Oct 3, 2018 at 9:51 PM Arnd Bergmann <arnd@arndb.de> wrote:
> >> On Wed, Oct 3, 2018 at 6:13 PM Daniel Vetter <daniel@ffwll.ch> wrote:
> >>> On Wed, Oct 03, 2018 at 05:49:32PM +0200, Noralf Trønnes wrote:
> >>>>
> >>>> Den 02.10.2018 22.58, skrev Arnd Bergmann:
> >>>>> The variable is now referenced unconditionally, but still
> >>>>> declared in an #ifdef:
> >>>>>
> >>>>> drivers/gpu/drm/imx/imx-drm-core.c: In function 'imx_drm_bind':
> >>>>> drivers/gpu/drm/imx/imx-drm-core.c:264:6: error: 'legacyfb_depth' undeclared (first use in this function); did you mean 'lockdep_depth'?
> >>>>>
> >>>>> Remove the #ifdef so it can always be accessed.
> >>>>>
> >>>>> Fixes: f53705fd9803 ("drm/imx: Use drm_fbdev_generic_setup()")
> >>>>> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> >>>>> ---
> >>>> I've already applied the previous one you sent:
> >>>> https://cgit.freedesktop.org/drm/drm-misc/commit/?id=064b06bbf117f8b5e64a5143e970d5a1cf602fd6
> >>>>
> >>>> Not sure when it reaches linux-next now that we are past rc6.
> >>> Only once we're past -rc1.
> >> Can we revert f53705fd9803 in linux-next then to prevent the regression from
> >> making it into 4.20?
> > Probably simpler to cherry pick the fix from drm-misc-next to
> > drm-misc-next-fixes. Noralf, can you pls do that?
>
> Would this be the correct procudure:
>
>      dim update-branches
>      dim create-workdir drm-misc-next-fixes
>      <build>
>      CONFIG_DRM_FBDEV_EMULATION=n
>      <build will break>
>      git cherry-pick 064b06bbf117f8b5e64a5143e970d5a1cf602fd6
>      <build passes>
>      dim push-branch drm-misc-next-fixes
>
> I read that cherry picking creates a new commit with a new hash.
> But since you ask me to do this, I assume git will handle this when
> branches are merged?

The git history will show both commit IDs, which is a bit ugly but
ok if it's rare enough. There is a chance for creating a conflict if the
backport changes context, or one branch contains extra changes
that touch the same lines, but usually this is not a problem.

      Arnd

Re: [PATCH] drm/imx: move 'legacyfb_depth' definition out of #ifdef

[Arnd Bergmann]

On Thu, Oct 4, 2018 at 4:43 PM Noralf Trønnes <noralf@tronnes.org> wrote:
> Den 04.10.2018 09.48, skrev Daniel Vetter:
> > On Wed, Oct 3, 2018 at 9:51 PM Arnd Bergmann <arnd@arndb.de> wrote:
> >> On Wed, Oct 3, 2018 at 6:13 PM Daniel Vetter <daniel@ffwll.ch> wrote:
> >>> On Wed, Oct 03, 2018 at 05:49:32PM +0200, Noralf Trønnes wrote:
> >>>>
> >>>> Den 02.10.2018 22.58, skrev Arnd Bergmann:
> >>>>> The variable is now referenced unconditionally, but still
> >>>>> declared in an #ifdef:
> >>>>>
> >>>>> drivers/gpu/drm/imx/imx-drm-core.c: In function 'imx_drm_bind':
> >>>>> drivers/gpu/drm/imx/imx-drm-core.c:264:6: error: 'legacyfb_depth' undeclared (first use in this function); did you mean 'lockdep_depth'?
> >>>>>
> >>>>> Remove the #ifdef so it can always be accessed.
> >>>>>
> >>>>> Fixes: f53705fd9803 ("drm/imx: Use drm_fbdev_generic_setup()")
> >>>>> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> >>>>> ---
> >>>> I've already applied the previous one you sent:
> >>>> https://cgit.freedesktop.org/drm/drm-misc/commit/?id=064b06bbf117f8b5e64a5143e970d5a1cf602fd6
> >>>>
> >>>> Not sure when it reaches linux-next now that we are past rc6.
> >>> Only once we're past -rc1.
> >> Can we revert f53705fd9803 in linux-next then to prevent the regression from
> >> making it into 4.20?
> > Probably simpler to cherry pick the fix from drm-misc-next to
> > drm-misc-next-fixes. Noralf, can you pls do that?
>
> Would this be the correct procudure:
>
>      dim update-branches
>      dim create-workdir drm-misc-next-fixes
>      <build>
>      CONFIG_DRM_FBDEV_EMULATION=n
>      <build will break>
>      git cherry-pick 064b06bbf117f8b5e64a5143e970d5a1cf602fd6
>      <build passes>
>      dim push-branch drm-misc-next-fixes
>
> I read that cherry picking creates a new commit with a new hash.
> But since you ask me to do this, I assume git will handle this when
> branches are merged?

The git history will show both commit IDs, which is a bit ugly but
ok if it's rare enough. There is a chance for creating a conflict if the
backport changes context, or one branch contains extra changes
that touch the same lines, but usually this is not a problem.

      Arnd
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

Re: [PATCH] drm/imx: move 'legacyfb_depth' definition out of #ifdef

[Daniel Vetter]

On Thu, Oct 04, 2018 at 05:04:21PM +0200, Arnd Bergmann wrote:
> On Thu, Oct 4, 2018 at 4:43 PM Noralf Trønnes <noralf@tronnes.org> wrote:
> > Den 04.10.2018 09.48, skrev Daniel Vetter:
> > > On Wed, Oct 3, 2018 at 9:51 PM Arnd Bergmann <arnd@arndb.de> wrote:
> > >> On Wed, Oct 3, 2018 at 6:13 PM Daniel Vetter <daniel@ffwll.ch> wrote:
> > >>> On Wed, Oct 03, 2018 at 05:49:32PM +0200, Noralf Trønnes wrote:
> > >>>>
> > >>>> Den 02.10.2018 22.58, skrev Arnd Bergmann:
> > >>>>> The variable is now referenced unconditionally, but still
> > >>>>> declared in an #ifdef:
> > >>>>>
> > >>>>> drivers/gpu/drm/imx/imx-drm-core.c: In function 'imx_drm_bind':
> > >>>>> drivers/gpu/drm/imx/imx-drm-core.c:264:6: error: 'legacyfb_depth' undeclared (first use in this function); did you mean 'lockdep_depth'?
> > >>>>>
> > >>>>> Remove the #ifdef so it can always be accessed.
> > >>>>>
> > >>>>> Fixes: f53705fd9803 ("drm/imx: Use drm_fbdev_generic_setup()")
> > >>>>> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> > >>>>> ---
> > >>>> I've already applied the previous one you sent:
> > >>>> https://cgit.freedesktop.org/drm/drm-misc/commit/?id=064b06bbf117f8b5e64a5143e970d5a1cf602fd6
> > >>>>
> > >>>> Not sure when it reaches linux-next now that we are past rc6.
> > >>> Only once we're past -rc1.
> > >> Can we revert f53705fd9803 in linux-next then to prevent the regression from
> > >> making it into 4.20?
> > > Probably simpler to cherry pick the fix from drm-misc-next to
> > > drm-misc-next-fixes. Noralf, can you pls do that?
> >
> > Would this be the correct procudure:
> >
> >      dim update-branches
> >      dim create-workdir drm-misc-next-fixes
> >      <build>
> >      CONFIG_DRM_FBDEV_EMULATION=n
> >      <build will break>
> >      git cherry-pick 064b06bbf117f8b5e64a5143e970d5a1cf602fd6
> >      <build passes>
> >      dim push-branch drm-misc-next-fixes
> >
> > I read that cherry picking creates a new commit with a new hash.
> > But since you ask me to do this, I assume git will handle this when
> > branches are merged?
> 
> The git history will show both commit IDs, which is a bit ugly but
> ok if it's rare enough. There is a chance for creating a conflict if the
> backport changes context, or one branch contains extra changes
> that touch the same lines, but usually this is not a problem.

+1, and your recipe looks good too. drm-intel works entirely on these
cherry-picks, and we've done it a few times in drm-misc too. Having to
cherry-pick is one of the downsides of group maintainership, since you
really can't rebase trees at will. Definitely not the -next queue.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

Re: [PATCH] drm/imx: move 'legacyfb_depth' definition out of #ifdef

[Daniel Vetter]

On Thu, Oct 04, 2018 at 05:04:21PM +0200, Arnd Bergmann wrote:
> On Thu, Oct 4, 2018 at 4:43 PM Noralf Trønnes <noralf@tronnes.org> wrote:
> > Den 04.10.2018 09.48, skrev Daniel Vetter:
> > > On Wed, Oct 3, 2018 at 9:51 PM Arnd Bergmann <arnd@arndb.de> wrote:
> > >> On Wed, Oct 3, 2018 at 6:13 PM Daniel Vetter <daniel@ffwll.ch> wrote:
> > >>> On Wed, Oct 03, 2018 at 05:49:32PM +0200, Noralf Trønnes wrote:
> > >>>>
> > >>>> Den 02.10.2018 22.58, skrev Arnd Bergmann:
> > >>>>> The variable is now referenced unconditionally, but still
> > >>>>> declared in an #ifdef:
> > >>>>>
> > >>>>> drivers/gpu/drm/imx/imx-drm-core.c: In function 'imx_drm_bind':
> > >>>>> drivers/gpu/drm/imx/imx-drm-core.c:264:6: error: 'legacyfb_depth' undeclared (first use in this function); did you mean 'lockdep_depth'?
> > >>>>>
> > >>>>> Remove the #ifdef so it can always be accessed.
> > >>>>>
> > >>>>> Fixes: f53705fd9803 ("drm/imx: Use drm_fbdev_generic_setup()")
> > >>>>> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> > >>>>> ---
> > >>>> I've already applied the previous one you sent:
> > >>>> https://cgit.freedesktop.org/drm/drm-misc/commit/?id=064b06bbf117f8b5e64a5143e970d5a1cf602fd6
> > >>>>
> > >>>> Not sure when it reaches linux-next now that we are past rc6.
> > >>> Only once we're past -rc1.
> > >> Can we revert f53705fd9803 in linux-next then to prevent the regression from
> > >> making it into 4.20?
> > > Probably simpler to cherry pick the fix from drm-misc-next to
> > > drm-misc-next-fixes. Noralf, can you pls do that?
> >
> > Would this be the correct procudure:
> >
> >      dim update-branches
> >      dim create-workdir drm-misc-next-fixes
> >      <build>
> >      CONFIG_DRM_FBDEV_EMULATION=n
> >      <build will break>
> >      git cherry-pick 064b06bbf117f8b5e64a5143e970d5a1cf602fd6
> >      <build passes>
> >      dim push-branch drm-misc-next-fixes
> >
> > I read that cherry picking creates a new commit with a new hash.
> > But since you ask me to do this, I assume git will handle this when
> > branches are merged?
> 
> The git history will show both commit IDs, which is a bit ugly but
> ok if it's rare enough. There is a chance for creating a conflict if the
> backport changes context, or one branch contains extra changes
> that touch the same lines, but usually this is not a problem.

+1, and your recipe looks good too. drm-intel works entirely on these
cherry-picks, and we've done it a few times in drm-misc too. Having to
cherry-pick is one of the downsides of group maintainership, since you
really can't rebase trees at will. Definitely not the -next queue.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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Re: [PATCH] drm/imx: move 'legacyfb_depth' definition out of #ifdef

[Noralf Trønnes]

Den 04.10.2018 21.35, skrev Daniel Vetter:
> On Thu, Oct 04, 2018 at 05:04:21PM +0200, Arnd Bergmann wrote:
>> On Thu, Oct 4, 2018 at 4:43 PM Noralf Trønnes <noralf@tronnes.org> wrote:
>>> Den 04.10.2018 09.48, skrev Daniel Vetter:
>>>> On Wed, Oct 3, 2018 at 9:51 PM Arnd Bergmann <arnd@arndb.de> wrote:
>>>>> On Wed, Oct 3, 2018 at 6:13 PM Daniel Vetter <daniel@ffwll.ch> wrote:
>>>>>> On Wed, Oct 03, 2018 at 05:49:32PM +0200, Noralf Trønnes wrote:
>>>>>>> Den 02.10.2018 22.58, skrev Arnd Bergmann:
>>>>>>>> The variable is now referenced unconditionally, but still
>>>>>>>> declared in an #ifdef:
>>>>>>>>
>>>>>>>> drivers/gpu/drm/imx/imx-drm-core.c: In function 'imx_drm_bind':
>>>>>>>> drivers/gpu/drm/imx/imx-drm-core.c:264:6: error: 'legacyfb_depth' undeclared (first use in this function); did you mean 'lockdep_depth'?
>>>>>>>>
>>>>>>>> Remove the #ifdef so it can always be accessed.
>>>>>>>>
>>>>>>>> Fixes: f53705fd9803 ("drm/imx: Use drm_fbdev_generic_setup()")
>>>>>>>> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
>>>>>>>> ---
>>>>>>> I've already applied the previous one you sent:
>>>>>>> https://cgit.freedesktop.org/drm/drm-misc/commit/?id=064b06bbf117f8b5e64a5143e970d5a1cf602fd6
>>>>>>>
>>>>>>> Not sure when it reaches linux-next now that we are past rc6.
>>>>>> Only once we're past -rc1.
>>>>> Can we revert f53705fd9803 in linux-next then to prevent the regression from
>>>>> making it into 4.20?
>>>> Probably simpler to cherry pick the fix from drm-misc-next to
>>>> drm-misc-next-fixes. Noralf, can you pls do that?
>>> Would this be the correct procudure:
>>>
>>>       dim update-branches
>>>       dim create-workdir drm-misc-next-fixes
>>>       <build>
>>>       CONFIG_DRM_FBDEV_EMULATION=n
>>>       <build will break>
>>>       git cherry-pick 064b06bbf117f8b5e64a5143e970d5a1cf602fd6
>>>       <build passes>
>>>       dim push-branch drm-misc-next-fixes
>>>
>>> I read that cherry picking creates a new commit with a new hash.
>>> But since you ask me to do this, I assume git will handle this when
>>> branches are merged?
>> The git history will show both commit IDs, which is a bit ugly but
>> ok if it's rare enough. There is a chance for creating a conflict if the
>> backport changes context, or one branch contains extra changes
>> that touch the same lines, but usually this is not a problem.
> +1, and your recipe looks good too. drm-intel works entirely on these
> cherry-picks, and we've done it a few times in drm-misc too. Having to
> cherry-pick is one of the downsides of group maintainership, since you
> really can't rebase trees at will. Definitely not the -next queue.

The patch is now in drm-misc-next-fixes.
Thanks for helping me fix this fallout.

Noralf.