Hi Maciej, Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on drm/drm-next] [also build test WARNING on next-20180119] [cannot apply to v4.15-rc9] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Maciej-Purski/drm-bridge-sii8620-fix-display-modes-validation/20180125-174703 base: git://people.freedesktop.org/~airlied/linux.git drm-next config: i386-randconfig-sb0-01260635 (attached as .config) compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4 reproduce: # save the attached .config to linux build tree make ARCH=i386 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): drivers/gpu/drm/bridge/sil-sii8620.c: In function 'sii8620_mode_valid': >> drivers/gpu/drm/bridge/sil-sii8620.c:2242:2: warning: 'ret' may be used >> uninitialized in this function [-Wmaybe-uninitialized] return ret; ^ vim +/ret +2242 drivers/gpu/drm/bridge/sil-sii8620.c 2220 2221 static enum drm_mode_status sii8620_mode_valid(struct drm_bridge *bridge, 2222 const struct drm_display_mode *mode) 2223 { 2224 enum drm_mode_status ret; 2225 struct sii8620 *ctx = bridge_to_sii8620(bridge); 2226 int pack_required = sii8620_is_packing_required(ctx, mode); 2227 bool can_pack = ctx->devcap[MHL_DCAP_VID_LINK_MODE] & 2228 MHL_DCAP_VID_LINK_PPIXEL; 2229 2230 switch (pack_required) { 2231 case -1: 2232 ret = MODE_CLOCK_HIGH; 2233 break; 2234 case 1: 2235 ret = (can_pack) ? MODE_OK : MODE_CLOCK_HIGH; 2236 break; 2237 case 0: 2238 ret = MODE_OK; 2239 break; 2240 } 2241 > 2242 return ret; 2243 } 2244 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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