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SubjectRe: [PATCH v3 07/23] ata: libahci_platform: Convert to using devm bulk clocks API
Hi Serge,

I love your patch! Yet something to improve:

[auto build test ERROR on axboe-block/for-next]
[also build test ERROR on robh/for-next linus/master v5.18-rc6 next-20220512]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url: https://github.com/intel-lab-lkp/linux/commits/Serge-Semin/ata-ahci-Add-DWC-Baikal-T1-AHCI-SATA-support/20220512-072125
base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
config: sh-randconfig-r006-20220512 (https://download.01.org/0day-ci/archive/20220513/202205130237.a48PdxbJ-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 11.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/71066bfbd7d3a8cab5b76032068f5bcdc6d99b21
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Serge-Semin/ata-ahci-Add-DWC-Baikal-T1-AHCI-SATA-support/20220512-072125
git checkout 71066bfbd7d3a8cab5b76032068f5bcdc6d99b21
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=sh SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

sh4-linux-ld: drivers/ata/libahci_platform.o: in function `ahci_platform_get_resources':
>> drivers/ata/libahci_platform.c:382: undefined reference to `__clk_get_name'


vim +382 drivers/ata/libahci_platform.c

fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 347
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 348 /**
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 349 * ahci_platform_get_resources - Get platform resources
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 350 * @pdev: platform device to get resources for
16af2d65842d343 Kunihiko Hayashi 2018-08-22 351 * @flags: bitmap representing the resource to get
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 352 *
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 353 * This function allocates an ahci_host_priv struct, and gets the following
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 354 * resources, storing a reference to them inside the returned struct:
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 355 *
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 356 * 1) mmio registers (IORESOURCE_MEM 0, mandatory)
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 357 * 2) regulator for controlling the targets power (optional)
a37da9180f42c95 Corentin Labbe 2018-09-03 358 * regulator for controlling the AHCI controller (optional)
71066bfbd7d3a8c Serge Semin 2022-05-12 359 * 3) all clocks specified in the devicetree node, or a single
71066bfbd7d3a8c Serge Semin 2022-05-12 360 * clock for non-OF platforms (optional)
9d2ab9957397083 Kunihiko Hayashi 2018-08-22 361 * 4) resets, if flags has AHCI_PLATFORM_GET_RESETS (optional)
9d2ab9957397083 Kunihiko Hayashi 2018-08-22 362 * 5) phys (optional)
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 363 *
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 364 * RETURNS:
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 365 * The allocated ahci_host_priv on success, otherwise an ERR_PTR value
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 366 */
16af2d65842d343 Kunihiko Hayashi 2018-08-22 367 struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev,
16af2d65842d343 Kunihiko Hayashi 2018-08-22 368 unsigned int flags)
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 369 {
71066bfbd7d3a8c Serge Semin 2022-05-12 370 int rc, child_nodes, enabled_ports = 0;
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 371 struct device *dev = &pdev->dev;
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 372 struct ahci_host_priv *hpriv;
b1a9edbda040a43 Antoine Tenart 2014-07-30 373 struct device_node *child;
b1a9edbda040a43 Antoine Tenart 2014-07-30 374 u32 mask_port_map = 0;
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 375
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 376 if (!devres_open_group(dev, NULL, GFP_KERNEL))
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 377 return ERR_PTR(-ENOMEM);
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 378
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 379 hpriv = devres_alloc(ahci_platform_put_resources, sizeof(*hpriv),
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 380 GFP_KERNEL);
09d29e57ad01111 Serge Semin 2022-05-12 381 if (!hpriv) {
09d29e57ad01111 Serge Semin 2022-05-12 @382 rc = -ENOMEM;
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 383 goto err_out;
09d29e57ad01111 Serge Semin 2022-05-12 384 }
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 385
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 386 devres_add(dev, hpriv);
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 387
a28445fba62bae3 Serge Semin 2022-05-12 388 /*
a28445fba62bae3 Serge Semin 2022-05-12 389 * If the DT provided an "ahci" named resource, use it. Otherwise,
a28445fba62bae3 Serge Semin 2022-05-12 390 * fallback to using the default first resource for the device node.
a28445fba62bae3 Serge Semin 2022-05-12 391 */
a28445fba62bae3 Serge Semin 2022-05-12 392 if (platform_get_resource_byname(pdev, IORESOURCE_MEM, "ahci"))
a28445fba62bae3 Serge Semin 2022-05-12 393 hpriv->mmio = devm_platform_ioremap_resource_byname(pdev, "ahci");
a28445fba62bae3 Serge Semin 2022-05-12 394 else
a28445fba62bae3 Serge Semin 2022-05-12 395 hpriv->mmio = devm_platform_ioremap_resource(pdev, 0);
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 396 if (IS_ERR(hpriv->mmio)) {
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 397 rc = PTR_ERR(hpriv->mmio);
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 398 goto err_out;
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 399 }
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 400
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 401 /*
71066bfbd7d3a8c Serge Semin 2022-05-12 402 * Bulk clocks getting procedure can fail to find any clock due to
71066bfbd7d3a8c Serge Semin 2022-05-12 403 * running on a non-OF platform or due to the clocks being defined in
71066bfbd7d3a8c Serge Semin 2022-05-12 404 * bypass of the DT firmware (like da850, spear13xx). In that case we
71066bfbd7d3a8c Serge Semin 2022-05-12 405 * fallback to getting a single clock source right from the dev clocks
71066bfbd7d3a8c Serge Semin 2022-05-12 406 * list.
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 407 */
71066bfbd7d3a8c Serge Semin 2022-05-12 408 rc = devm_clk_bulk_get_all(dev, &hpriv->clks);
71066bfbd7d3a8c Serge Semin 2022-05-12 409 if (rc < 0)
71066bfbd7d3a8c Serge Semin 2022-05-12 410 goto err_out;
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 411
71066bfbd7d3a8c Serge Semin 2022-05-12 412 if (rc > 0) {
71066bfbd7d3a8c Serge Semin 2022-05-12 413 /* Got clocks in bulk */
71066bfbd7d3a8c Serge Semin 2022-05-12 414 hpriv->n_clks = rc;
71066bfbd7d3a8c Serge Semin 2022-05-12 415 } else {
71066bfbd7d3a8c Serge Semin 2022-05-12 416 /*
71066bfbd7d3a8c Serge Semin 2022-05-12 417 * No clock bulk found: fallback to manually getting
71066bfbd7d3a8c Serge Semin 2022-05-12 418 * the optional clock.
71066bfbd7d3a8c Serge Semin 2022-05-12 419 */
71066bfbd7d3a8c Serge Semin 2022-05-12 420 hpriv->clks = devm_kzalloc(dev, sizeof(*hpriv->clks), GFP_KERNEL);
71066bfbd7d3a8c Serge Semin 2022-05-12 421 if (!hpriv->clks) {
71066bfbd7d3a8c Serge Semin 2022-05-12 422 rc = -ENOMEM;
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 423 goto err_out;
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 424 }
71066bfbd7d3a8c Serge Semin 2022-05-12 425 hpriv->clks->clk = devm_clk_get_optional(dev, NULL);
71066bfbd7d3a8c Serge Semin 2022-05-12 426 if (IS_ERR(hpriv->clks->clk)) {
71066bfbd7d3a8c Serge Semin 2022-05-12 427 rc = PTR_ERR(hpriv->clks->clk);
71066bfbd7d3a8c Serge Semin 2022-05-12 428 goto err_out;
71066bfbd7d3a8c Serge Semin 2022-05-12 429 } else if (hpriv->clks->clk) {
71066bfbd7d3a8c Serge Semin 2022-05-12 430 hpriv->clks->id = __clk_get_name(hpriv->clks->clk);
71066bfbd7d3a8c Serge Semin 2022-05-12 431 hpriv->n_clks = 1;
71066bfbd7d3a8c Serge Semin 2022-05-12 432 }
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 433 }
fd990556f0fa254 Bartlomiej Zolnierkiewicz 2014-03-25 434
962399bb7fbf5ce Mark Brown 2019-10-16 435 hpriv->ahci_regulator = devm_regulator_get(dev, "ahci");
a37da9180f42c95 Corentin Labbe 2018-09-03 436 if (IS_ERR(hpriv->ahci_regulator)) {
a37da9180f42c95 Corentin Labbe 2018-09-03 437 rc = PTR_ERR(hpriv->ahci_regulator);
962399bb7fbf5ce Mark Brown 2019-10-16 438 if (rc != 0)
a37da9180f42c95 Corentin Labbe 2018-09-03 439 goto err_out;
a37da9180f42c95 Corentin Labbe 2018-09-03 440 }
a37da9180f42c95 Corentin Labbe 2018-09-03 441
962399bb7fbf5ce Mark Brown 2019-10-16 442 hpriv->phy_regulator = devm_regulator_get(dev, "phy");
f20fb266e77a8af Corentin Labbe 2018-09-03 443 if (IS_ERR(hpriv->phy_regulator)) {
f20fb266e77a8af Corentin Labbe 2018-09-03 444 rc = PTR_ERR(hpriv->phy_regulator);
f20fb266e77a8af Corentin Labbe 2018-09-03 445 goto err_out;
f20fb266e77a8af Corentin Labbe 2018-09-03 446 }
f20fb266e77a8af Corentin Labbe 2018-09-03 447
9d2ab9957397083 Kunihiko Hayashi 2018-08-22 448 if (flags & AHCI_PLATFORM_GET_RESETS) {
9d2ab9957397083 Kunihiko Hayashi 2018-08-22 449 hpriv->rsts = devm_reset_control_array_get_optional_shared(dev);
9d2ab9957397083 Kunihiko Hayashi 2018-08-22 450 if (IS_ERR(hpriv->rsts)) {
9d2ab9957397083 Kunihiko Hayashi 2018-08-22 451 rc = PTR_ERR(hpriv->rsts);
9d2ab9957397083 Kunihiko Hayashi 2018-08-22 452 goto err_out;
9d2ab9957397083 Kunihiko Hayashi 2018-08-22 453 }
9d2ab9957397083 Kunihiko Hayashi 2018-08-22 454 }
9d2ab9957397083 Kunihiko Hayashi 2018-08-22 455
c7d7ddee7e24eed Gregory CLEMENT 2015-01-15 456 hpriv->nports = child_nodes = of_get_child_count(dev->of_node);
b1a9edbda040a43 Antoine Tenart 2014-07-30 457
c7d7ddee7e24eed Gregory CLEMENT 2015-01-15 458 /*
c7d7ddee7e24eed Gregory CLEMENT 2015-01-15 459 * If no sub-node was found, we still need to set nports to
c7d7ddee7e24eed Gregory CLEMENT 2015-01-15 460 * one in order to be able to use the
c7d7ddee7e24eed Gregory CLEMENT 2015-01-15 461 * ahci_platform_[en|dis]able_[phys|regulators] functions.
c7d7ddee7e24eed Gregory CLEMENT 2015-01-15 462 */
c7d7ddee7e24eed Gregory CLEMENT 2015-01-15 463 if (!child_nodes)
c7d7ddee7e24eed Gregory CLEMENT 2015-01-15 464 hpriv->nports = 1;
c7d7ddee7e24eed Gregory CLEMENT 2015-01-15 465
a4b9f5ed02e2351 Corentin Labbe 2018-07-12 466 hpriv->phys = devm_kcalloc(dev, hpriv->nports, sizeof(*hpriv->phys), GFP_KERNEL);
b1a9edbda040a43 Antoine Tenart 2014-07-30 467 if (!hpriv->phys) {
b1a9edbda040a43 Antoine Tenart 2014-07-30 468 rc = -ENOMEM;
b1a9edbda040a43 Antoine Tenart 2014-07-30 469 goto err_out;
b1a9edbda040a43 Antoine Tenart 2014-07-30 470 }
04ba9488199e3ee Corentin Labbe 2018-07-17 471 /*
04ba9488199e3ee Corentin Labbe 2018-07-17 472 * We cannot use devm_ here, since ahci_platform_put_resources() uses
04ba9488199e3ee Corentin Labbe 2018-07-17 473 * target_pwrs after devm_ have freed memory
04ba9488199e3ee Corentin Labbe 2018-07-17 474 */
04ba9488199e3ee Corentin Labbe 2018-07-17 475 hpriv->target_pwrs = kcalloc(hpriv->nports, sizeof(*hpriv->target_pwrs), GFP_KERNEL);
c7d7ddee7e24eed Gregory CLEMENT 2015-01-15 476 if (!hpriv->target_pwrs) {
c7d7ddee7e24eed Gregory CLEMENT 2015-01-15 477 rc = -ENOMEM;
c7d7ddee7e24eed Gregory CLEMENT 2015-01-15 478 goto err_out;
c7d7ddee7e24eed Gregory CLEMENT 2015-01-15 479 }
b1a9edbda040a43 Antoine Tenart 2014-07-30 480
c7d7ddee7e24eed Gregory CLEMENT 2015-01-15 481 if (child_nodes) {
b1a9edbda040a43 Antoine Tenart 2014-07-30 482 for_each_child_of_node(dev->of_node, child) {
b1a9edbda040a43 Antoine Tenart 2014-07-30 483 u32 port;
f627cfdeb7d07df Guenter Roeck 2015-01-31 484 struct platform_device *port_dev __maybe_unused;
b1a9edbda040a43 Antoine Tenart 2014-07-30 485
b1a9edbda040a43 Antoine Tenart 2014-07-30 486 if (!of_device_is_available(child))
b1a9edbda040a43 Antoine Tenart 2014-07-30 487 continue;
b1a9edbda040a43 Antoine Tenart 2014-07-30 488
b1a9edbda040a43 Antoine Tenart 2014-07-30 489 if (of_property_read_u32(child, "reg", &port)) {
b1a9edbda040a43 Antoine Tenart 2014-07-30 490 rc = -EINVAL;
d7f76f36a8b4dc8 Nishka Dasgupta 2019-08-15 491 of_node_put(child);
b1a9edbda040a43 Antoine Tenart 2014-07-30 492 goto err_out;
b1a9edbda040a43 Antoine Tenart 2014-07-30 493 }
b1a9edbda040a43 Antoine Tenart 2014-07-30 494
b1a9edbda040a43 Antoine Tenart 2014-07-30 495 if (port >= hpriv->nports) {
b1a9edbda040a43 Antoine Tenart 2014-07-30 496 dev_warn(dev, "invalid port number %d\n", port);
b1a9edbda040a43 Antoine Tenart 2014-07-30 497 continue;
b1a9edbda040a43 Antoine Tenart 2014-07-30 498 }
b1a9edbda040a43 Antoine Tenart 2014-07-30 499 mask_port_map |= BIT(port);
b1a9edbda040a43 Antoine Tenart 2014-07-30 500

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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