[PATCH] drm: Fix DYNAMIC_DEBUG_MODULE propagation to subdirectories

[PATCH] drm: Fix DYNAMIC_DEBUG_MODULE propagation to subdirectories

[Sean Paul]

From: Sean Paul <seanpaul@google.com>

Switch incompatible CFLAGS-y to ccflags-* and propagate the flag
to subdirectories to avoid implicit declaration errors for
_dynamic_func_call_cls when DRM_USE_DYNAMIC_DEBUG is enabled.

Note that this flag is still disabled due to depends on BROKEN.

Fixes: 84ec67288c10 ("drm_print: wrap drm_*_dbg in dyndbg descriptor factory macro")
Signed-off-by: Sean Paul <seanpaul@google.com>
---

a wild seanpaul appears...

 drivers/gpu/drm/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index e97faabcd783..7082ff6449fb 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -3,7 +3,8 @@
 # Makefile for the drm device driver.  This driver provides support for the
 # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
 
-CFLAGS-$(CONFIG_DRM_USE_DYNAMIC_DEBUG)	+= -DDYNAMIC_DEBUG_MODULE
+ccflags-$(CONFIG_DRM_USE_DYNAMIC_DEBUG)	+= -DDYNAMIC_DEBUG_MODULE
+subdir-ccflags-$(CONFIG_DRM_USE_DYNAMIC_DEBUG)	+= -DDYNAMIC_DEBUG_MODULE
 
 # Unconditionally enable W=1 warnings locally
 # --- begin copy-paste W=1 warnings from scripts/Makefile.warn
-- 
Sean Paul, Software Engineer, Google / Chromium OS

Re: [PATCH] drm: Fix DYNAMIC_DEBUG_MODULE propagation to subdirectories

[Louis Chauvet]

On 4/20/26 18:04, Sean Paul wrote:
> From: Sean Paul <seanpaul@google.com>
> 
> Switch incompatible CFLAGS-y to ccflags-* and propagate the flag
> to subdirectories to avoid implicit declaration errors for
> _dynamic_func_call_cls when DRM_USE_DYNAMIC_DEBUG is enabled.
> 
> Note that this flag is still disabled due to depends on BROKEN.
> 
> Fixes: 84ec67288c10 ("drm_print: wrap drm_*_dbg in dyndbg descriptor factory macro")
> Signed-off-by: Sean Paul <seanpaul@google.com>

Reviewed-by: Louis Chauvet <louis.chauvet@bootlin.com>

> ---
> 
> a wild seanpaul appears...
> 
>   drivers/gpu/drm/Makefile | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
> index e97faabcd783..7082ff6449fb 100644
> --- a/drivers/gpu/drm/Makefile
> +++ b/drivers/gpu/drm/Makefile
> @@ -3,7 +3,8 @@
>   # Makefile for the drm device driver.  This driver provides support for the
>   # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
>   
> -CFLAGS-$(CONFIG_DRM_USE_DYNAMIC_DEBUG)	+= -DDYNAMIC_DEBUG_MODULE
> +ccflags-$(CONFIG_DRM_USE_DYNAMIC_DEBUG)	+= -DDYNAMIC_DEBUG_MODULE
> +subdir-ccflags-$(CONFIG_DRM_USE_DYNAMIC_DEBUG)	+= -DDYNAMIC_DEBUG_MODULE
>   
>   # Unconditionally enable W=1 warnings locally
>   # --- begin copy-paste W=1 warnings from scripts/Makefile.warn

Re: [PATCH] drm: Fix DYNAMIC_DEBUG_MODULE propagation to subdirectories

[jim.cromie]

On Wed, Apr 29, 2026 at 7:40 AM Louis Chauvet <louis.chauvet@bootlin.com> wrote:
>
>
>
> On 4/20/26 18:04, Sean Paul wrote:
> > From: Sean Paul <seanpaul@google.com>
> >
> > Switch incompatible CFLAGS-y to ccflags-* and propagate the flag
> > to subdirectories to avoid implicit declaration errors for
> > _dynamic_func_call_cls when DRM_USE_DYNAMIC_DEBUG is enabled.
> >
> > Note that this flag is still disabled due to depends on BROKEN.
> >
> > Fixes: 84ec67288c10 ("drm_print: wrap drm_*_dbg in dyndbg descriptor factory macro")
> > Signed-off-by: Sean Paul <seanpaul@google.com>
>
> Reviewed-by: Louis Chauvet <louis.chauvet@bootlin.com>
>

  Acked-by: Jim Cromie <jim.cromie@gmail.com>
  Link: https://lore.kernel.org/lkml/20260326185413.1205870-39-jim.cromie@gmail.com/