Hi Uwe, kernel test robot noticed the following build warnings: [auto build test WARNING on bbd220ce4e29ed55ab079007cff0b550895258eb] url: https://github.com/intel-lab-lkp/linux/commits/Uwe-Kleine-K-nig/PM-devfreq-sun8i-a33-mbus-Simplify-usage-of-clk_rate_exclusive_get/20231213-012823 base: bbd220ce4e29ed55ab079007cff0b550895258eb patch link: https://lore.kernel.org/r/9cf2553c9da167ebf6654bbdeab6ce2a93232ca6.1702400947.git.u.kleine-koenig%40pengutronix.de patch subject: [PATCH 4/5] memory: tegra30-emc: Simplify usage of clk_rate_exclusive_get() config: s390-allyesconfig (https://download.01.org/0day-ci/archive/20231215/202312152223.5QHKKu32-lkp@xxxxxxxxx/config) compiler: s390-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231215/202312152223.5QHKKu32-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202312152223.5QHKKu32-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): drivers/memory/tegra/tegra30-emc.c: In function 'tegra_emc_suspend': >> drivers/memory/tegra/tegra30-emc.c:1696:13: warning: unused variable 'err' [-Wunused-variable] 1696 | int err; | ^~~ vim +/err +1696 drivers/memory/tegra/tegra30-emc.c e34212c75a6899 Dmitry Osipenko 2019-08-12 1692 e34212c75a6899 Dmitry Osipenko 2019-08-12 1693 static int tegra_emc_suspend(struct device *dev) e34212c75a6899 Dmitry Osipenko 2019-08-12 1694 { e34212c75a6899 Dmitry Osipenko 2019-08-12 1695 struct tegra_emc *emc = dev_get_drvdata(dev); 51bb73f93410a3 Dmitry Osipenko 2019-12-20 @1696 int err; e34212c75a6899 Dmitry Osipenko 2019-08-12 1697 51bb73f93410a3 Dmitry Osipenko 2019-12-20 1698 /* take exclusive control over the clock's rate */ 2ba3f947597dae Uwe Kleine-König 2023-12-12 1699 clk_rate_exclusive_get(emc->clk); 51bb73f93410a3 Dmitry Osipenko 2019-12-20 1700 51bb73f93410a3 Dmitry Osipenko 2019-12-20 1701 /* suspending in a bad state will hang machine */ 51bb73f93410a3 Dmitry Osipenko 2019-12-20 1702 if (WARN(emc->bad_state, "hardware in a bad state\n")) e34212c75a6899 Dmitry Osipenko 2019-08-12 1703 return -EINVAL; e34212c75a6899 Dmitry Osipenko 2019-08-12 1704 e34212c75a6899 Dmitry Osipenko 2019-08-12 1705 emc->bad_state = true; e34212c75a6899 Dmitry Osipenko 2019-08-12 1706 e34212c75a6899 Dmitry Osipenko 2019-08-12 1707 return 0; e34212c75a6899 Dmitry Osipenko 2019-08-12 1708 } e34212c75a6899 Dmitry Osipenko 2019-08-12 1709 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
