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Date: Wed, 10 Oct 2018 07:48:47 +0800
From: kbuild test robot <lkp@...el.com>
To: Borislav Petkov <bp@...e.de>
Cc: kbuild-all@...org, linux-kernel@...r.kernel.org,
tipbuild@...or.com, Bjorn Helgaas <helgaas@...nel.org>
Subject: [tip:x86/mm 4/4] htmldocs: kernel/resource.c:337: warning: Function
parameter or member 'first_lvl' not described in 'find_next_iomem_res'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/mm
head: b69c2e20f6e4046da84ce5b33ba1ef89cb087b40
commit: b69c2e20f6e4046da84ce5b33ba1ef89cb087b40 [4/4] resource: Clean it up a bit
reproduce: make htmldocs
All warnings (new ones prefixed by >>):
WARNING: convert(1) not found, for SVG to PDF conversion install ImageMagick (https://www.imagemagick.org)
kernel/resource.c:337: warning: Function parameter or member 'start' not described in 'find_next_iomem_res'
kernel/resource.c:337: warning: Function parameter or member 'end' not described in 'find_next_iomem_res'
kernel/resource.c:337: warning: Function parameter or member 'flags' not described in 'find_next_iomem_res'
kernel/resource.c:337: warning: Function parameter or member 'desc' not described in 'find_next_iomem_res'
>> kernel/resource.c:337: warning: Function parameter or member 'first_lvl' not described in 'find_next_iomem_res'
kernel/resource.c:337: warning: Function parameter or member 'res' not described in 'find_next_iomem_res'
>> kernel/resource.c:409: warning: Function parameter or member 'arg' not described in 'walk_iomem_res_desc'
>> kernel/resource.c:409: warning: Function parameter or member 'func' not described in 'walk_iomem_res_desc'
>> kernel/resource.c:409: warning: Function parameter or member 'arg' not described in 'walk_iomem_res_desc'
>> kernel/resource.c:409: warning: Function parameter or member 'func' not described in 'walk_iomem_res_desc'
include/linux/srcu.h:175: warning: Function parameter or member 'p' not described in 'srcu_dereference_notrace'
include/linux/srcu.h:175: warning: Function parameter or member 'sp' not described in 'srcu_dereference_notrace'
include/linux/gfp.h:1: warning: no structured comments found
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4381: warning: Function parameter or member 'wext.ibss' not described in 'wireless_dev'
include/net/cfg80211.h:4381: warning: Function parameter or member 'wext.connect' not described in 'wireless_dev'
include/net/cfg80211.h:4381: warning: Function parameter or member 'wext.keys' not described in 'wireless_dev'
include/net/cfg80211.h:4381: warning: Function parameter or member 'wext.ie' not described in 'wireless_dev'
include/net/cfg80211.h:4381: warning: Function parameter or member 'wext.ie_len' not described in 'wireless_dev'
include/net/cfg80211.h:4381: warning: Function parameter or member 'wext.bssid' not described in 'wireless_dev'
include/net/cfg80211.h:4381: warning: Function parameter or member 'wext.ssid' not described in 'wireless_dev'
include/net/cfg80211.h:4381: warning: Function parameter or member 'wext.default_key' not described in 'wireless_dev'
include/net/cfg80211.h:4381: warning: Function parameter or member 'wext.default_mgmt_key' not described in 'wireless_dev'
include/net/cfg80211.h:4381: warning: Function parameter or member 'wext.prev_bssid_valid' not described in 'wireless_dev'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
include/net/cfg80211.h:4869: warning: Excess function parameter 'ptr' description in 'reg_query_regdb_wmm'
vim +337 kernel/resource.c
^1da177e4 Linus Torvalds 2005-04-16 320
010a93bf9 Bjorn Helgaas 2018-09-27 321 /**
010a93bf9 Bjorn Helgaas 2018-09-27 322 * Finds the lowest iomem resource that covers part of [start..end]. The
010a93bf9 Bjorn Helgaas 2018-09-27 323 * caller must specify start, end, flags, and desc (which may be
010a93bf9 Bjorn Helgaas 2018-09-27 324 * IORES_DESC_NONE).
010a93bf9 Bjorn Helgaas 2018-09-27 325 *
010a93bf9 Bjorn Helgaas 2018-09-27 326 * If a resource is found, returns 0 and *res is overwritten with the part
010a93bf9 Bjorn Helgaas 2018-09-27 327 * of the resource that's within [start..end]; if none is found, returns
010a93bf9 Bjorn Helgaas 2018-09-27 328 * -1.
010a93bf9 Bjorn Helgaas 2018-09-27 329 *
010a93bf9 Bjorn Helgaas 2018-09-27 330 * This function walks the whole tree and not just first level children
b69c2e20f Borislav Petkov 2018-10-09 331 * unless @first_lvl is true.
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 332 */
010a93bf9 Bjorn Helgaas 2018-09-27 333 static int find_next_iomem_res(resource_size_t start, resource_size_t end,
010a93bf9 Bjorn Helgaas 2018-09-27 334 unsigned long flags, unsigned long desc,
b69c2e20f Borislav Petkov 2018-10-09 335 bool first_lvl, struct resource *res)
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 336 {
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 @337 struct resource *p;
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 338
b69c2e20f Borislav Petkov 2018-10-09 339 if (!res)
b69c2e20f Borislav Petkov 2018-10-09 340 return -EINVAL;
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 341
b69c2e20f Borislav Petkov 2018-10-09 342 if (start >= end)
b69c2e20f Borislav Petkov 2018-10-09 343 return -EINVAL;
8c86e70ac Vivek Goyal 2014-08-08 344
800df627e Vivek Goyal 2014-08-29 345 read_lock(&resource_lock);
800df627e Vivek Goyal 2014-08-29 346
b69c2e20f Borislav Petkov 2018-10-09 347 for (p = iomem_resource.child; p; p = next_resource(p, first_lvl)) {
010a93bf9 Bjorn Helgaas 2018-09-27 348 if ((p->flags & flags) != flags)
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 349 continue;
3f33647c4 Toshi Kani 2016-01-26 350 if ((desc != IORES_DESC_NONE) && (desc != p->desc))
3f33647c4 Toshi Kani 2016-01-26 351 continue;
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 352 if (p->start > end) {
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 353 p = NULL;
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 354 break;
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 355 }
a98959fdb Bjorn Helgaas 2018-09-27 356 if ((p->end >= start) && (p->start <= end))
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 357 break;
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 358 }
8c86e70ac Vivek Goyal 2014-08-08 359
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 360 read_unlock(&resource_lock);
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 361 if (!p)
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 362 return -1;
010a93bf9 Bjorn Helgaas 2018-09-27 363
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 364 /* copy data */
010a93bf9 Bjorn Helgaas 2018-09-27 365 res->start = max(start, p->start);
010a93bf9 Bjorn Helgaas 2018-09-27 366 res->end = min(end, p->end);
0e4c12b45 Tom Lendacky 2017-10-20 367 res->flags = p->flags;
0e4c12b45 Tom Lendacky 2017-10-20 368 res->desc = p->desc;
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 369 return 0;
2842f1141 KAMEZAWA Hiroyuki 2006-06-27 370 }
908eedc61 KAMEZAWA Hiroyuki 2009-09-22 371
010a93bf9 Bjorn Helgaas 2018-09-27 372 static int __walk_iomem_res_desc(resource_size_t start, resource_size_t end,
010a93bf9 Bjorn Helgaas 2018-09-27 373 unsigned long flags, unsigned long desc,
b69c2e20f Borislav Petkov 2018-10-09 374 bool first_lvl, void *arg,
1d2e733b1 Tom Lendacky 2017-10-20 375 int (*func)(struct resource *, void *))
4ac2aed83 Tom Lendacky 2017-10-20 376 {
010a93bf9 Bjorn Helgaas 2018-09-27 377 struct resource res;
4ac2aed83 Tom Lendacky 2017-10-20 378 int ret = -1;
4ac2aed83 Tom Lendacky 2017-10-20 379
010a93bf9 Bjorn Helgaas 2018-09-27 380 while (start < end &&
b69c2e20f Borislav Petkov 2018-10-09 381 !find_next_iomem_res(start, end, flags, desc, first_lvl, &res)) {
010a93bf9 Bjorn Helgaas 2018-09-27 382 ret = (*func)(&res, arg);
4ac2aed83 Tom Lendacky 2017-10-20 383 if (ret)
4ac2aed83 Tom Lendacky 2017-10-20 384 break;
4ac2aed83 Tom Lendacky 2017-10-20 385
010a93bf9 Bjorn Helgaas 2018-09-27 386 start = res.end + 1;
4ac2aed83 Tom Lendacky 2017-10-20 387 }
4ac2aed83 Tom Lendacky 2017-10-20 388
4ac2aed83 Tom Lendacky 2017-10-20 389 return ret;
4ac2aed83 Tom Lendacky 2017-10-20 390 }
4ac2aed83 Tom Lendacky 2017-10-20 391
b69c2e20f Borislav Petkov 2018-10-09 392 /**
8c86e70ac Vivek Goyal 2014-08-08 393 * Walks through iomem resources and calls func() with matching resource
8c86e70ac Vivek Goyal 2014-08-08 394 * ranges. This walks through whole tree and not just first level children.
8c86e70ac Vivek Goyal 2014-08-08 395 * All the memory ranges which overlap start,end and also match flags and
3f33647c4 Toshi Kani 2016-01-26 396 * desc are valid candidates.
3f33647c4 Toshi Kani 2016-01-26 397 *
3f33647c4 Toshi Kani 2016-01-26 398 * @desc: I/O resource descriptor. Use IORES_DESC_NONE to skip @desc check.
3f33647c4 Toshi Kani 2016-01-26 399 * @flags: I/O resource flags
3f33647c4 Toshi Kani 2016-01-26 400 * @start: start addr
3f33647c4 Toshi Kani 2016-01-26 401 * @end: end addr
3f33647c4 Toshi Kani 2016-01-26 402 *
3f33647c4 Toshi Kani 2016-01-26 403 * NOTE: For a new descriptor search, define a new IORES_DESC in
3f33647c4 Toshi Kani 2016-01-26 404 * <linux/ioport.h> and set it in 'desc' of a target resource entry.
3f33647c4 Toshi Kani 2016-01-26 405 */
3f33647c4 Toshi Kani 2016-01-26 406 int walk_iomem_res_desc(unsigned long desc, unsigned long flags, u64 start,
1d2e733b1 Tom Lendacky 2017-10-20 407 u64 end, void *arg, int (*func)(struct resource *, void *))
3f33647c4 Toshi Kani 2016-01-26 408 {
010a93bf9 Bjorn Helgaas 2018-09-27 @409 return __walk_iomem_res_desc(start, end, flags, desc, false, arg, func);
3f33647c4 Toshi Kani 2016-01-26 410 }
d76401ade Dan Williams 2018-06-02 411 EXPORT_SYMBOL_GPL(walk_iomem_res_desc);
3f33647c4 Toshi Kani 2016-01-26 412
:::::: The code at line 337 was first introduced by commit
:::::: 2842f11419704f8707fffc82e10d2263427fc130 [PATCH] catch valid mem range at onlining memory
:::::: TO: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
:::::: CC: Linus Torvalds <torvalds@...osdl.org>
---
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