diff mbox

[v3] drm/bridge: Build the panel wrapper in drm_kms_helper

Message ID 3fd262cf-1db6-4335-320c-af92f9014502@linux.intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Maarten Lankhorst June 6, 2017, 2:31 p.m. UTC
This fixes the following depmod error when building drm as a module:
depmod: ERROR: Found 6 modules in dependency cycles!
depmod: ERROR: Cycle detected: drm -> drm_kms_helper -> drm

Fixes: 13dfc0540a57 ("drm/bridge: Refactor out the panel wrapper from the lvds-encoder bridge.")
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
---

Comments

Eric Anholt June 6, 2017, 5:52 p.m. UTC | #1
Maarten Lankhorst <maarten.lankhorst@linux.intel.com> writes:

> This fixes the following depmod error when building drm as a module:
> depmod: ERROR: Found 6 modules in dependency cycles!
> depmod: ERROR: Cycle detected: drm -> drm_kms_helper -> drm
>
> Fixes: 13dfc0540a57 ("drm/bridge: Refactor out the panel wrapper from the lvds-encoder bridge.")
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

Looks plausible to me.  Given how much trouble I've had getting the
kbuild right, anyone else want to chime in?
Marta Lofstedt June 7, 2017, 6:55 a.m. UTC | #2
Thanks Maarten now I can build the kernel again.

/Marta

> -----Original Message-----

> From: dri-devel [mailto:dri-devel-bounces@lists.freedesktop.org] On Behalf

> Of Maarten Lankhorst

> Sent: Tuesday, June 6, 2017 5:32 PM

> To: Archit Taneja <architt@codeaurora.org>; Eric Anholt <eric@anholt.net>;

> Andrzej Hajda <a.hajda@samsung.com>; Laurent Pinchart

> <Laurent.pinchart@ideasonboard.com>; Thierry Reding

> <thierry.reding@gmail.com>

> Cc: linux-kernel@vger.kernel.org; dri-devel@lists.freedesktop.org

> Subject: [PATCH v3] drm/bridge: Build the panel wrapper in drm_kms_helper

> 

> This fixes the following depmod error when building drm as a module:

> depmod: ERROR: Found 6 modules in dependency cycles!

> depmod: ERROR: Cycle detected: drm -> drm_kms_helper -> drm

> 

> Fixes: 13dfc0540a57 ("drm/bridge: Refactor out the panel wrapper from the

> lvds-encoder bridge.")

> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

> ---

> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index

> dc69175255b1..3999dffcd9ef 100644

> --- a/drivers/gpu/drm/Makefile

> +++ b/drivers/gpu/drm/Makefile

> @@ -24,7 +24,6 @@ drm-$(CONFIG_COMPAT) += drm_ioc32.o

>  drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o

>  drm-$(CONFIG_PCI) += ati_pcigart.o

>  drm-$(CONFIG_DRM_PANEL) += drm_panel.o

> -drm-$(CONFIG_DRM_PANEL_BRIDGE) += bridge/panel.o

>  drm-$(CONFIG_OF) += drm_of.o

>  drm-$(CONFIG_AGP) += drm_agpsupport.o

>  drm-$(CONFIG_DEBUG_FS) += drm_debugfs.o drm_debugfs_crc.o @@ -

> 35,6 +34,7 @@ drm_kms_helper-y := drm_crtc_helper.o drm_dp_helper.o

> drm_probe_helper.o \

>  		drm_simple_kms_helper.o

> drm_modeset_helper.o \

>  		drm_scdc_helper.o

> 

> +drm_kms_helper-$(CONFIG_DRM_PANEL_BRIDGE) += bridge/panel.o

>  drm_kms_helper-$(CONFIG_DRM_LOAD_EDID_FIRMWARE) +=

> drm_edid_load.o

>  drm_kms_helper-$(CONFIG_DRM_FBDEV_EMULATION) +=

> drm_fb_helper.o

>  drm_kms_helper-$(CONFIG_DRM_KMS_CMA_HELPER) +=

> drm_fb_cma_helper.o

> 

> _______________________________________________

> dri-devel mailing list

> dri-devel@lists.freedesktop.org

> https://lists.freedesktop.org/mailman/listinfo/dri-devel
Archit Taneja June 7, 2017, 8:19 a.m. UTC | #3
On 06/06/2017 11:22 PM, Eric Anholt wrote:
> Maarten Lankhorst <maarten.lankhorst@linux.intel.com> writes:
>
>> This fixes the following depmod error when building drm as a module:
>> depmod: ERROR: Found 6 modules in dependency cycles!
>> depmod: ERROR: Cycle detected: drm -> drm_kms_helper -> drm
>>
>> Fixes: 13dfc0540a57 ("drm/bridge: Refactor out the panel wrapper from the lvds-encoder bridge.")
>> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
>
> Looks plausible to me.  Given how much trouble I've had getting the
> kbuild right, anyone else want to chime in?
>

The fix looks good to me too. depmod doesn't complain after this patch.

I can queue it to drm-misc-next if no one else has any comments on it
in the next few hours or so.

I'll make sure I check with 'make module_install' before pushing, I didn't
know depmod wasn't called otherwise.

Thanks,
Archit
diff mbox

Patch

diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index dc69175255b1..3999dffcd9ef 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -24,7 +24,6 @@  drm-$(CONFIG_COMPAT) += drm_ioc32.o
 drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
 drm-$(CONFIG_PCI) += ati_pcigart.o
 drm-$(CONFIG_DRM_PANEL) += drm_panel.o
-drm-$(CONFIG_DRM_PANEL_BRIDGE) += bridge/panel.o
 drm-$(CONFIG_OF) += drm_of.o
 drm-$(CONFIG_AGP) += drm_agpsupport.o
 drm-$(CONFIG_DEBUG_FS) += drm_debugfs.o drm_debugfs_crc.o
@@ -35,6 +34,7 @@  drm_kms_helper-y := drm_crtc_helper.o drm_dp_helper.o drm_probe_helper.o \
 		drm_simple_kms_helper.o drm_modeset_helper.o \
 		drm_scdc_helper.o
 
+drm_kms_helper-$(CONFIG_DRM_PANEL_BRIDGE) += bridge/panel.o
 drm_kms_helper-$(CONFIG_DRM_LOAD_EDID_FIRMWARE) += drm_edid_load.o
 drm_kms_helper-$(CONFIG_DRM_FBDEV_EMULATION) += drm_fb_helper.o
 drm_kms_helper-$(CONFIG_DRM_KMS_CMA_HELPER) += drm_fb_cma_helper.o