linux-kernel - drivers/gpu/drm/nouveau/nvkm/subdev/iccsense/base.c:133:2-7: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values.

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Message-ID: <201604131531.CJokPLHc%fengguang.wu@intel.com>
Date:	Wed, 13 Apr 2016 15:07:42 +0800
From:	kbuild test robot <fengguang.wu@...el.com>
To:	Karol Herbst <nouveau@...olherbst.de>
Cc:	kbuild-all@...org, linux-kernel@...r.kernel.org,
	Ben Skeggs <bskeggs@...hat.com>,
	Martin Peres <martin.peres@...e.fr>
Subject: drivers/gpu/drm/nouveau/nvkm/subdev/iccsense/base.c:133:2-7:
 WARNING: NULL check before freeing functions like kfree, debugfs_remove,
 debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider
 reorganizing relevant code to avoid passing NULL values.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1c74a7f812b135d3df41d7c3671b647aed6467bf
commit: b71c0892631af3dd2aea708529d282a65c683be5 drm/nouveau/iccsense: implement for ina209, ina219 and ina3221
date:   4 weeks ago


coccinelle warnings: (new ones prefixed by >>)

>> drivers/gpu/drm/nouveau/nvkm/subdev/iccsense/base.c:133:2-7: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values.

Please review and possibly fold the followup patch.

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