[Intel-gfx] [drm-intel:drm-intel-nightly 922/930] include/linux/list.h:385:29: error: initialization discards 'const' qualifier from pointer target type
kbuild test robot
fengguang.wu at intel.com
Fri Dec 16 15:48:31 UTC 2016
tree: git://anongit.freedesktop.org/drm-intel drm-intel-nightly
head: ca1c03136b168816ac65c5945776908e464fca6b
commit: 45b186f111f1623b257d183920cd4aab16a1acd5 [922/930] drm: Constify the drm_mm API
config: x86_64-randconfig-x008-201650 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
git checkout 45b186f111f1623b257d183920cd4aab16a1acd5
# save the attached .config to linux build tree
make ARCH=x86_64
All errors (new ones prefixed by >>):
In file included from include/linux/mutex.h:14:0,
from include/linux/seq_file.h:7,
from drivers/gpu/drm/i915/i915_gem_gtt.c:26:
drivers/gpu/drm/i915/i915_gem_gtt.c: In function 'i915_gtt_color_adjust':
>> include/linux/list.h:385:29: error: initialization discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
struct list_head *head__ = (ptr); \
^
drivers/gpu/drm/i915/i915_gem_gtt.c:2732:9: note: in expansion of macro 'list_first_entry_or_null'
node = list_first_entry_or_null(&node->node_list,
^~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
vim +/const +385 include/linux/list.h
3943f42c Andrey Utkin 2014-11-14 369 * @member: the name of the list_head within the struct.
93be3c2e Oleg Nesterov 2013-11-12 370 *
93be3c2e Oleg Nesterov 2013-11-12 371 * Note, that list is expected to be not empty.
93be3c2e Oleg Nesterov 2013-11-12 372 */
93be3c2e Oleg Nesterov 2013-11-12 373 #define list_last_entry(ptr, type, member) \
93be3c2e Oleg Nesterov 2013-11-12 374 list_entry((ptr)->prev, type, member)
93be3c2e Oleg Nesterov 2013-11-12 375
93be3c2e Oleg Nesterov 2013-11-12 376 /**
6d7581e6 Jiri Pirko 2013-05-29 377 * list_first_entry_or_null - get the first element from a list
6d7581e6 Jiri Pirko 2013-05-29 378 * @ptr: the list head to take the element from.
6d7581e6 Jiri Pirko 2013-05-29 379 * @type: the type of the struct this is embedded in.
3943f42c Andrey Utkin 2014-11-14 380 * @member: the name of the list_head within the struct.
6d7581e6 Jiri Pirko 2013-05-29 381 *
6d7581e6 Jiri Pirko 2013-05-29 382 * Note that if the list is empty, it returns NULL.
6d7581e6 Jiri Pirko 2013-05-29 383 */
12adfd88 Chris Wilson 2016-07-23 384 #define list_first_entry_or_null(ptr, type, member) ({ \
12adfd88 Chris Wilson 2016-07-23 @385 struct list_head *head__ = (ptr); \
12adfd88 Chris Wilson 2016-07-23 386 struct list_head *pos__ = READ_ONCE(head__->next); \
12adfd88 Chris Wilson 2016-07-23 387 pos__ != head__ ? list_entry(pos__, type, member) : NULL; \
12adfd88 Chris Wilson 2016-07-23 388 })
6d7581e6 Jiri Pirko 2013-05-29 389
6d7581e6 Jiri Pirko 2013-05-29 390 /**
008208c6 Oleg Nesterov 2013-11-12 391 * list_next_entry - get the next element in list
008208c6 Oleg Nesterov 2013-11-12 392 * @pos: the type * to cursor
3943f42c Andrey Utkin 2014-11-14 393 * @member: the name of the list_head within the struct.
:::::: The code at line 385 was first introduced by commit
:::::: 12adfd882c5f37548acaba4f043a158b3c54468b list: Expand list_first_entry_or_null()
:::::: TO: Chris Wilson <chris at chris-wilson.co.uk>
:::::: CC: Paul E. McKenney <paulmck at linux.vnet.ibm.com>
---
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