Hi Daniel, I love your patch! Perhaps something to improve: [auto build test WARNING on pm/linux-next] [also build test WARNING on shawnguo/for-next linux/master linus/master v5.8-rc2 next-20200623] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Daniel-Baluta/Introduce-multi-PM-domains-helpers/20200623-193706 base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next config: x86_64-randconfig-s022-20200623 (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-dirty # save the attached .config to linux build tree make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/base/power/common.c:260:33: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected unsigned long [usertype] size @@ got restricted gfp_t @@ >> drivers/base/power/common.c:260:33: sparse: expected unsigned long [usertype] size drivers/base/power/common.c:260:33: sparse: got restricted gfp_t >> drivers/base/power/common.c:260:45: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected restricted gfp_t [usertype] gfp @@ got unsigned long @@ drivers/base/power/common.c:260:45: sparse: expected restricted gfp_t [usertype] gfp >> drivers/base/power/common.c:260:45: sparse: got unsigned long vim +260 drivers/base/power/common.c 231 232 /** 233 * dev_multi_pm_attach - power up device associated power domains 234 * @dev: The device used to lookup the PM domains 235 * 236 * Parse device's OF node to find all PM domains specifiers. For each power 237 * domain found, create a virtual device and associate it with the 238 * current power domain. 239 * 240 * This function should typically be invoked by a driver during the 241 * probe phase, in the case its device requires power management through 242 * multiple PM domains. 243 * 244 * Returns a pointer to @dev_multi_pm_domain_data if successfully attached PM 245 * domains, NULL when the device doesn't need a PM domain or when single 246 * power-domains exists for it, else an ERR_PTR() in case of 247 * failures. 248 */ 249 struct dev_multi_pm_domain_data *dev_multi_pm_attach(struct device *dev) 250 { 251 struct dev_multi_pm_domain_data *mpd, *retp; 252 int num_domains; 253 int i; 254 255 num_domains = of_count_phandle_with_args(dev->of_node, "power-domains", 256 "#power-domain-cells"); 257 if (num_domains < 2) 258 return NULL; 259 > 260 mpd = devm_kzalloc(dev, GFP_KERNEL, sizeof(*mpd)); 261 if (!mpd) 262 return ERR_PTR(-ENOMEM); 263 264 mpd->dev = dev; 265 mpd->num_domains = num_domains; 266 267 mpd->virt_devs = devm_kmalloc_array(dev, mpd->num_domains, 268 sizeof(*mpd->virt_devs), 269 GFP_KERNEL); 270 if (!mpd->virt_devs) 271 return ERR_PTR(-ENOMEM); 272 273 mpd->links = devm_kmalloc_array(dev, mpd->num_domains, 274 sizeof(*mpd->links), GFP_KERNEL); 275 if (!mpd->links) 276 return ERR_PTR(-ENOMEM); 277 278 for (i = 0; i < mpd->num_domains; i++) { 279 mpd->virt_devs[i] = dev_pm_domain_attach_by_id(dev, i); 280 if (IS_ERR(mpd->virt_devs[i])) { 281 retp = (struct dev_multi_pm_domain_data *) 282 mpd->virt_devs[i]; 283 goto exit_unroll_pm; 284 } 285 mpd->links[i] = device_link_add(dev, mpd->virt_devs[i], 286 DL_FLAG_STATELESS | 287 DL_FLAG_PM_RUNTIME | 288 DL_FLAG_RPM_ACTIVE); 289 if (!mpd->links[i]) { 290 retp = ERR_PTR(-ENOMEM); 291 dev_pm_domain_detach(mpd->virt_devs[i], false); 292 goto exit_unroll_pm; 293 } 294 } 295 return mpd; 296 297 exit_unroll_pm: 298 while (--i >= 0) { 299 device_link_del(mpd->links[i]); 300 dev_pm_domain_detach(mpd->virt_devs[i], false); 301 } 302 303 return retp; 304 } 305 EXPORT_SYMBOL(dev_multi_pm_attach); 306 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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