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

From: Noralf TrÃnnes
Date: Fri Oct 05 2018 - 06:22:43 EST



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 TrÃnnes <noralf@xxxxxxxxxxx> wrote:
Den 04.10.2018 09.48, skrev Daniel Vetter:
On Wed, Oct 3, 2018 at 9:51 PM Arnd Bergmann <arnd@xxxxxxxx> wrote:
On Wed, Oct 3, 2018 at 6:13 PM Daniel Vetter <daniel@xxxxxxxx> wrote:
On Wed, Oct 03, 2018 at 05:49:32PM +0200, Noralf TrÃnnes 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@xxxxxxxx>
---
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.