Hi Dmitry, Thank you for the patch! Yet something to improve: [auto build test ERROR on pm/linux-next] [also build test ERROR on v5.13-rc6 next-20210618] [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/0day-ci/linux/commits/Dmitry-Baryshkov/PM-domains-use-... base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next config: x86_64-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/e8b916bca5705e8166b78ec1b58feb271... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Dmitry-Baryshkov/PM-domains-use-separate-lockdep-class-for-each-genpd/20210617-032213 git checkout e8b916bca5705e8166b78ec1b58feb27130d07f4 # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/base/power/domain.c: In function 'genpd_lock_init': 1945 | genpd->mlock_key = kzalloc(sizeof(genpd->mlock_key), GFP_KERNEL); | ^~ drivers/base/power/domain.c:1945:42: error: 'struct generic_pm_domain' has no member named 'mlock_key' 1945 | genpd->mlock_key = kzalloc(sizeof(genpd->mlock_key), GFP_KERNEL); | ^~ drivers/base/power/domain.c:1946:13: error: 'struct generic_pm_domain' has no member named 'mlock_key' 1946 | if (!genpd->mlock_key) | ^~ drivers/base/power/domain.c:1949:29: error: 'struct generic_pm_domain' has no member named 'mlock_key' 1949 | lockdep_register_key(genpd->mlock_key); | ^~ drivers/base/power/domain.c:1951:49: error: 'struct generic_pm_domain' has no member named 'mlock_key' 1951 | __mutex_init(&genpd->mlock, genpd->name, genpd->mlock_key); | ^~ drivers/base/power/domain.c: In function 'genpd_lock_destroy': drivers/base/power/domain.c:1961:14: error: 'struct generic_pm_domain' has no member named 'mlock_key' 1961 | kfree(genpd->mlock_key); | ^~ vim +1945 drivers/base/power/domain.c 1935 1936 static int genpd_lock_init(struct generic_pm_domain *genpd) 1937 { 1938 if (genpd->flags & GENPD_FLAG_IRQ_SAFE) { 1939 spin_lock_init(&genpd->slock); 1940 genpd->lock_ops = &genpd_spin_ops; 1941 } else { 1942 /* Some genpds are static, some are dynamically allocated. To 1943 * make lockdep happy always allocate the key dynamically and 1944 * register it. */ 1946 if (!genpd->mlock_key) 1947 return -ENOMEM; 1948 1949 lockdep_register_key(genpd->mlock_key); 1950 1951 __mutex_init(&genpd->mlock, genpd->name, genpd->mlock_key); 1952 genpd->lock_ops = &genpd_mtx_ops; 1953 } 1954 1955 return 0; 1956 } 1957 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org