Hi John, kernel test robot noticed the following build warnings:
https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/UPDATE-20250911-023707/John-Ripple/drm-bridge-ti-sn65dsi86-break-probe-dependency-loop/20250820-235209 base: linus/master patch link: https://lore.kernel.org/r/20250910183353.2045339-1-john.ripple%40keysight.com patch subject: [PATCH V3] drm/bridge: ti-sn65dsi86: Add support for DisplayPort mode with HPD config: x86_64-randconfig-161-20250916 (https://download.01.org/0day-ci/archive/20250916/202509161344.fpfsjq01-...@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 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 <l...@intel.com> | Reported-by: Dan Carpenter <dan.carpen...@linaro.org> | Closes: https://lore.kernel.org/r/202509161344.fpfsjq01-...@intel.com/ smatch warnings: drivers/gpu/drm/bridge/ti-sn65dsi86.c:1385 ti_sn_bridge_interrupt() error: uninitialized symbol 'status'. vim +/status +1385 drivers/gpu/drm/bridge/ti-sn65dsi86.c b8670cf7e6a41b John Ripple 2025-09-10 1365 static irqreturn_t ti_sn_bridge_interrupt(int irq, void *private) b8670cf7e6a41b John Ripple 2025-09-10 1366 { b8670cf7e6a41b John Ripple 2025-09-10 1367 struct ti_sn65dsi86 *pdata = private; b8670cf7e6a41b John Ripple 2025-09-10 1368 struct drm_device *dev = pdata->bridge.dev; b8670cf7e6a41b John Ripple 2025-09-10 1369 u8 status; b8670cf7e6a41b John Ripple 2025-09-10 1370 int ret; b8670cf7e6a41b John Ripple 2025-09-10 1371 bool hpd_event = false; b8670cf7e6a41b John Ripple 2025-09-10 1372 b8670cf7e6a41b John Ripple 2025-09-10 1373 mutex_lock(&pdata->hpd_mutex); b8670cf7e6a41b John Ripple 2025-09-10 1374 if (!pdata->hpd_enabled) { b8670cf7e6a41b John Ripple 2025-09-10 1375 mutex_unlock(&pdata->hpd_mutex); b8670cf7e6a41b John Ripple 2025-09-10 1376 return IRQ_HANDLED; b8670cf7e6a41b John Ripple 2025-09-10 1377 } b8670cf7e6a41b John Ripple 2025-09-10 1378 b8670cf7e6a41b John Ripple 2025-09-10 1379 ret = ti_sn65dsi86_read_u8(pdata, SN_IRQ_STATUS_REG, &status); b8670cf7e6a41b John Ripple 2025-09-10 1380 if (ret) b8670cf7e6a41b John Ripple 2025-09-10 1381 pr_err("Failed to read IRQ status: %d\n", ret); status isn't initialized on error. b8670cf7e6a41b John Ripple 2025-09-10 1382 else b8670cf7e6a41b John Ripple 2025-09-10 1383 hpd_event = status & (HPD_REMOVAL_STATUS | HPD_INSERTION_STATUS); b8670cf7e6a41b John Ripple 2025-09-10 1384 b8670cf7e6a41b John Ripple 2025-09-10 @1385 if (status) { ^^^^^^ warning b8670cf7e6a41b John Ripple 2025-09-10 1386 drm_dbg(dev, "(SN_IRQ_STATUS_REG = %#x)\n", status); b8670cf7e6a41b John Ripple 2025-09-10 1387 ret = regmap_write(pdata->regmap, SN_IRQ_STATUS_REG, status); b8670cf7e6a41b John Ripple 2025-09-10 1388 if (ret) b8670cf7e6a41b John Ripple 2025-09-10 1389 pr_err("Failed to clear IRQ status: %d\n", ret); b8670cf7e6a41b John Ripple 2025-09-10 1390 } else { b8670cf7e6a41b John Ripple 2025-09-10 1391 mutex_unlock(&pdata->hpd_mutex); b8670cf7e6a41b John Ripple 2025-09-10 1392 return IRQ_NONE; b8670cf7e6a41b John Ripple 2025-09-10 1393 } b8670cf7e6a41b John Ripple 2025-09-10 1394 b8670cf7e6a41b John Ripple 2025-09-10 1395 /* Only send the HPD event if we are bound with a device. */ b8670cf7e6a41b John Ripple 2025-09-10 1396 if (dev && hpd_event) b8670cf7e6a41b John Ripple 2025-09-10 1397 drm_kms_helper_hotplug_event(dev); b8670cf7e6a41b John Ripple 2025-09-10 1398 mutex_unlock(&pdata->hpd_mutex); b8670cf7e6a41b John Ripple 2025-09-10 1399 b8670cf7e6a41b John Ripple 2025-09-10 1400 return IRQ_HANDLED; b8670cf7e6a41b John Ripple 2025-09-10 1401 } -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
