linux-kernel - Re: ERROR: modpost: "devm_drm_of_get_bridge" [drivers/usb/typec/mux/ptn36502.ko] undefined!

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Message-Id: <CZWPQKXWWDJF.31PYCW52I63O6@fairphone.com>
Date: Mon, 18 Mar 2024 08:55:20 +0100
From: "Luca Weiss" <luca.weiss@...rphone.com>
To: "kernel test robot" <lkp@...el.com>
Cc: <oe-kbuild-all@...ts.linux.dev>, <linux-kernel@...r.kernel.org>, "Heikki
 Krogerus" <heikki.krogerus@...ux.intel.com>, "Neil Armstrong"
 <neil.armstrong@...aro.org>, "Dmitry Baryshkov"
 <dmitry.baryshkov@...aro.org>
Subject: Re: ERROR: modpost: "devm_drm_of_get_bridge"
 [drivers/usb/typec/mux/ptn36502.ko] undefined!

On Sat Mar 16, 2024 at 7:23 AM CET, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   66a27abac311a30edbbb65fe8c41ff1b13876faa
> commit: 8e99dc783648e5e663494434544bdc5160522de3 usb: typec: add support for PTN36502 redriver
> date:   5 months ago
> config: riscv-randconfig-r064-20240311 (https://download.01.org/0day-ci/archive/20240316/202403161449.bV9MUszO-lkp@intel.com/config)
> compiler: riscv64-linux-gcc (GCC) 13.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240316/202403161449.bV9MUszO-lkp@intel.com/reproduce)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@...el.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202403161449.bV9MUszO-lkp@intel.com/
>
> All errors (new ones prefixed by >>, old ones prefixed by <<):
>
> WARNING: modpost: missing MODULE_DESCRIPTION() in vmlinux.o
> WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/locking/locktorture.o
> WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/rcu/rcutorture.o
> WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/rcu/rcuscale.o
> WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/rcu/refscale.o
> WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/torture.o
> WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nfs/nfsv4.o
> WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nls/nls_ucs2_utils.o
> WARNING: modpost: missing MODULE_DESCRIPTION() in fs/smb/common/cifs_arc4o
> WARNING: modpost: missing MODULE_DESCRIPTION() in fs/smb/common/cifs_md4.o
> WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/drm_panel_orientation_quirks.o
> ERROR: modpost: "devm_drm_of_get_bridge" [drivers/usb/typec/mux/nb7vpq904m.ko] undefined!
> >> ERROR: modpost: "devm_drm_of_get_bridge" [drivers/usb/typec/mux/ptn36502.ko] undefined!

This should be fixed by the patch I sent a while ago:
https://lore.kernel.org/lkml/20240111-drm-panel-bridge-fixup-v1-1-e06292f6f500@fairphone.com/

Regards
Luca