tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 7fd22855300e693668c3397771b3a2b3948f827a commit: 5b04aab6d49578eacd6d341e281c70a769f96126 [3517/4430] drm/dp: add drm_dp_phy_name() for getting DP PHY name config: x86_64-randconfig-m001 (https://download.01.org/0day-ci/archive/20220831/202208312353.Ud9b5ise-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-5) 11.3.0 If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> smatch warnings: drivers/gpu/drm/display/drm_dp_helper.c:417 drm_dp_phy_name() warn: unsigned 'dp_phy' is never less than zero. vim +/dp_phy +417 drivers/gpu/drm/display/drm_dp_helper.c 392 393 /** 394 * drm_dp_phy_name() - Get the name of the given DP PHY 395 * @dp_phy: The DP PHY identifier 396 * 397 * Given the @dp_phy, get a user friendly name of the DP PHY, either "DPRX" or 398 * "LTTPR <N>", or "<INVALID DP PHY>" on errors. The returned string is always 399 * non-NULL and valid. 400 * 401 * Returns: Name of the DP PHY. 402 */ 403 const char *drm_dp_phy_name(enum drm_dp_phy dp_phy) 404 { 405 static const char * const phy_names[] = { 406 [DP_PHY_DPRX] = "DPRX", 407 [DP_PHY_LTTPR1] = "LTTPR 1", 408 [DP_PHY_LTTPR2] = "LTTPR 2", 409 [DP_PHY_LTTPR3] = "LTTPR 3", 410 [DP_PHY_LTTPR4] = "LTTPR 4", 411 [DP_PHY_LTTPR5] = "LTTPR 5", 412 [DP_PHY_LTTPR6] = "LTTPR 6", 413 [DP_PHY_LTTPR7] = "LTTPR 7", 414 [DP_PHY_LTTPR8] = "LTTPR 8", 415 }; 416 > 417 if (dp_phy < 0 || dp_phy >= ARRAY_SIZE(phy_names) || 418 WARN_ON(!phy_names[dp_phy])) 419 return "<INVALID DP PHY>"; 420 421 return phy_names[dp_phy]; 422 } 423 EXPORT_SYMBOL(drm_dp_phy_name); 424 -- 0-DAY CI Kernel Test Service https://01.org/lkp
