Hi Vandita, Thank you for the patch! Yet something to improve: [auto build test ERROR on drm-intel/for-linux-next] [also build test ERROR on drm-tip/drm-tip next-20210820] [cannot apply to v5.14-rc7] [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/Vandita-Kulkarni/Enable-mipi-dsi... base: git://anongit.freedesktop.org/drm-intel for-linux-next config: x86_64-randconfig-a005-20210822 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/d75ce0657c5bed32b206ab0461ea42eea... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Vandita-Kulkarni/Enable-mipi-dsi-on-XELPD/20210823-112313 git checkout d75ce0657c5bed32b206ab0461ea42eea7514436 # save the attached .config to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): In file included from drivers/gpu/drm/i915/display/intel_ddi.h:10, from drivers/gpu/drm/i915/display/icl_dsi.c:35: drivers/gpu/drm/i915/display/icl_dsi.c: In function 'adlp_set_lp_hs_wakeup_gb': 11619 | _TGL_DSI_CHKN_REG_0, \ | ^~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/i915_reg.h:185:47: note: in definition of macro '_MMIO' 185 | #define _MMIO(r) ((const i915_reg_t){ .reg = (r) }) | ^ drivers/gpu/drm/i915/i915_reg.h:231:28: note: in expansion of macro '_PICK_EVEN' 231 | #define _PORT(port, a, b) _PICK_EVEN(port, a, b) | ^~~~~~~~~~ drivers/gpu/drm/i915/i915_reg.h:238:39: note: in expansion of macro '_PORT' 238 | #define _MMIO_PORT(port, a, b) _MMIO(_PORT(port, a, b)) | ^~~~~ drivers/gpu/drm/i915/i915_reg.h:11618:33: note: in expansion of macro '_MMIO_PORT' 11618 | #define TGL_DSI_CHKN_REG(port) _MMIO_PORT(port, \ | ^~~~~~~~~~ drivers/gpu/drm/i915/display/icl_dsi.c:1290:27: note: in expansion of macro 'TGL_DSI_CHKN_REG' 1290 | intel_de_rmw(dev_priv, TGL_DSI_CHKN_REG(port), | ^~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/i915_reg.h:11619:11: note: each undeclared identifier is reported only once for each function it appears in 11619 | _TGL_DSI_CHKN_REG_0, \ | ^~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/i915_reg.h:185:47: note: in definition of macro '_MMIO' 185 | #define _MMIO(r) ((const i915_reg_t){ .reg = (r) }) | ^ drivers/gpu/drm/i915/i915_reg.h:231:28: note: in expansion of macro '_PICK_EVEN' 231 | #define _PORT(port, a, b) _PICK_EVEN(port, a, b) | ^~~~~~~~~~ drivers/gpu/drm/i915/i915_reg.h:238:39: note: in expansion of macro '_PORT' 238 | #define _MMIO_PORT(port, a, b) _MMIO(_PORT(port, a, b)) | ^~~~~ drivers/gpu/drm/i915/i915_reg.h:11618:33: note: in expansion of macro '_MMIO_PORT' 11618 | #define TGL_DSI_CHKN_REG(port) _MMIO_PORT(port, \ | ^~~~~~~~~~ drivers/gpu/drm/i915/display/icl_dsi.c:1290:27: note: in expansion of macro 'TGL_DSI_CHKN_REG' 1290 | intel_de_rmw(dev_priv, TGL_DSI_CHKN_REG(port), | ^~~~~~~~~~~~~~~~ 11620 | _TGL_DSI_CHKN_REG_1) | ^~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/i915_reg.h:185:47: note: in definition of macro '_MMIO' 185 | #define _MMIO(r) ((const i915_reg_t){ .reg = (r) }) | ^ drivers/gpu/drm/i915/i915_reg.h:231:28: note: in expansion of macro '_PICK_EVEN' 231 | #define _PORT(port, a, b) _PICK_EVEN(port, a, b) | ^~~~~~~~~~ drivers/gpu/drm/i915/i915_reg.h:238:39: note: in expansion of macro '_PORT' 238 | #define _MMIO_PORT(port, a, b) _MMIO(_PORT(port, a, b)) | ^~~~~ drivers/gpu/drm/i915/i915_reg.h:11618:33: note: in expansion of macro '_MMIO_PORT' 11618 | #define TGL_DSI_CHKN_REG(port) _MMIO_PORT(port, \ | ^~~~~~~~~~ drivers/gpu/drm/i915/display/icl_dsi.c:1290:27: note: in expansion of macro 'TGL_DSI_CHKN_REG' 1290 | intel_de_rmw(dev_priv, TGL_DSI_CHKN_REG(port), | ^~~~~~~~~~~~~~~~ 1288 | if (DISPLAY_VER(dev_priv) == 13) | ^ vim +11619 drivers/gpu/drm/i915/i915_reg.h 11614 11615 /* TGL DSI Chicken register */ 11616 #define TGL_DSI_CHKN_REG_0 0x6B0C0 11617 #define TGL_DSI_CHKN_REG_1 0x6B8C0 11618 #define TGL_DSI_CHKN_REG(port) _MMIO_PORT(port, \ 11619 _TGL_DSI_CHKN_REG_0, \ 11620 _TGL_DSI_CHKN_REG_1) 11621 #define TGL_DSI_CHKN_LSHS_GB (0xF << 12) 11622 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org