Hi Tobias, Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on drm-intel/for-linux-next] [also build test WARNING on drm-tip/drm-tip drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next linus/master v5.9-rc6 next-20200925] [cannot apply to drm/drm-next] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Tobias-Jordan/drm-of-fix-leak-of-port_node/20200926-063854 base: git://anongit.freedesktop.org/drm-intel for-linux-next config: xtensa-allyesconfig (attached as .config) compiler: xtensa-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/9acba5320ef136e5d4a3b7563f4b5a362922c818 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Tobias-Jordan/drm-of-fix-leak-of-port_node/20200926-063854 git checkout 9acba5320ef136e5d4a3b7563f4b5a362922c818 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> All warnings (new ones prefixed by >>): drivers/gpu/drm/drm_of.c: In function 'drm_of_lvds_get_remote_pixels_type': >> drivers/gpu/drm/drm_of.c:318:16: warning: passing argument 1 of >> 'of_node_put' discards 'const' qualifier from pointer target type >> [-Wdiscarded-qualifiers] 318 | of_node_put(port_node); | ^~~~~~~~~ In file included from include/linux/irqdomain.h:35, from include/linux/acpi.h:13, from include/linux/i2c.h:13, from include/drm/drm_crtc.h:28, from include/drm/drm_atomic.h:31, from include/drm/drm_bridge.h:30, from drivers/gpu/drm/drm_of.c:7: include/linux/of.h:122:45: note: expected 'struct device_node *' but argument is of type 'const struct device_node *' 122 | extern void of_node_put(struct device_node *node); | ~~~~~~~~~~~~~~~~~~~~^~~~ drivers/gpu/drm/drm_of.c:335:16: warning: passing argument 1 of 'of_node_put' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] 335 | of_node_put(port_node); | ^~~~~~~~~ In file included from include/linux/irqdomain.h:35, from include/linux/acpi.h:13, from include/linux/i2c.h:13, from include/drm/drm_crtc.h:28, from include/drm/drm_atomic.h:31, from include/drm/drm_bridge.h:30, from drivers/gpu/drm/drm_of.c:7: include/linux/of.h:122:45: note: expected 'struct device_node *' but argument is of type 'const struct device_node *' 122 | extern void of_node_put(struct device_node *node); | ~~~~~~~~~~~~~~~~~~~~^~~~ vim +318 drivers/gpu/drm/drm_of.c 302 303 static int drm_of_lvds_get_remote_pixels_type( 304 const struct device_node *port_node) 305 { 306 struct device_node *endpoint = NULL; 307 int pixels_type = -EPIPE; 308 309 for_each_child_of_node(port_node, endpoint) { 310 struct device_node *remote_port; 311 int current_pt; 312 313 if (!of_node_name_eq(endpoint, "endpoint")) 314 continue; 315 316 remote_port = of_graph_get_remote_port(endpoint); 317 if (!remote_port) { > 318 of_node_put(port_node); 319 return -EPIPE; 320 } 321 322 current_pt = drm_of_lvds_get_port_pixels_type(remote_port); 323 of_node_put(remote_port); 324 if (pixels_type < 0) 325 pixels_type = current_pt; 326 327 /* 328 * Sanity check, ensure that all remote endpoints have the same 329 * pixel type. We may lift this restriction later if we need to 330 * support multiple sinks with different dual-link 331 * configurations by passing the endpoints explicitly to 332 * drm_of_lvds_get_dual_link_pixel_order(). 333 */ 334 if (!current_pt || pixels_type != current_pt) { 335 of_node_put(port_node); 336 return -EINVAL; 337 } 338 } 339 340 return pixels_type; 341 } 342 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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