Hi "José, Thank you for the patch! Perhaps something to improve: url: https://github.com/0day-ci/linux/commits/Jos-Roberto-de-Souza/drm-i915-tc-tgl-Implement-TCCOLD-sequences/20200319-080253 base: git://anongit.freedesktop.org/drm-intel for-linux-next If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> smatch warnings: drivers/gpu/drm/i915/display/intel_tc.c:554 icl_tc_cold_request() error: uninitialized symbol 'ret'. # https://github.com/0day-ci/linux/commit/29f27e6df6ad82b09a3c9ddaf5f51b2fc1647178 git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout 29f27e6df6ad82b09a3c9ddaf5f51b2fc1647178 vim +/ret +554 drivers/gpu/drm/i915/display/intel_tc.c 29f27e6df6ad82 José Roberto de Souza 2020-03-18 528 static inline int icl_tc_cold_request(struct intel_digital_port *dig_port, 29f27e6df6ad82 José Roberto de Souza 2020-03-18 529 bool block) 29f27e6df6ad82 José Roberto de Souza 2020-03-18 530 { 29f27e6df6ad82 José Roberto de Souza 2020-03-18 531 struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev); 29f27e6df6ad82 José Roberto de Souza 2020-03-18 532 enum intel_display_power_domain aux_domain; 29f27e6df6ad82 José Roberto de Souza 2020-03-18 533 int ret; 29f27e6df6ad82 José Roberto de Souza 2020-03-18 534 29f27e6df6ad82 José Roberto de Souza 2020-03-18 535 aux_domain = intel_aux_ch_to_power_domain(dig_port->aux_ch); 29f27e6df6ad82 José Roberto de Souza 2020-03-18 536 29f27e6df6ad82 José Roberto de Souza 2020-03-18 537 if (block) { 29f27e6df6ad82 José Roberto de Souza 2020-03-18 538 dig_port->tc_cold_wakeref = 29f27e6df6ad82 José Roberto de Souza 2020-03-18 539 intel_display_power_get_without_ack(i915, aux_domain); 29f27e6df6ad82 José Roberto de Souza 2020-03-18 540 29f27e6df6ad82 José Roberto de Souza 2020-03-18 541 do { 29f27e6df6ad82 José Roberto de Souza 2020-03-18 542 ret = sandybridge_pcode_write_timeout(i915, 29f27e6df6ad82 José Roberto de Souza 2020-03-18 543 ICL_PCODE_EXIT_TCCOLD, 29f27e6df6ad82 José Roberto de Souza 2020-03-18 544 0, 250, 1); 29f27e6df6ad82 José Roberto de Souza 2020-03-18 545 29f27e6df6ad82 José Roberto de Souza 2020-03-18 546 } while (ret == -EAGAIN); ret is only initialized on this path 29f27e6df6ad82 José Roberto de Souza 2020-03-18 547 } else if (dig_port->tc_mode == TC_PORT_LEGACY) { 29f27e6df6ad82 José Roberto de Souza 2020-03-18 548 drm_WARN_ON(&i915->drm, !dig_port->tc_lock_wakeref); 29f27e6df6ad82 José Roberto de Souza 2020-03-18 549 intel_display_power_put(i915, aux_domain, 29f27e6df6ad82 José Roberto de Souza 2020-03-18 550 dig_port->tc_cold_wakeref); 29f27e6df6ad82 José Roberto de Souza 2020-03-18 551 dig_port->tc_cold_wakeref = 0; 29f27e6df6ad82 José Roberto de Souza 2020-03-18 552 } 29f27e6df6ad82 José Roberto de Souza 2020-03-18 553 29f27e6df6ad82 José Roberto de Souza 2020-03-18 @554 return ret; 29f27e6df6ad82 José Roberto de Souza 2020-03-18 555 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
