Hi all, This series aims to clean up the code while addressing the majority of clang warnings in this driver, some found by the 0day bot and others found by me. There are several enum conversion warnings that happen, which I do not really know how to solve without understanding how exactly this driver works. I would appreciate some guidance or a solution. Below are the warnings, sorry for not wrapping them but they would be hard to read otherwise. ../drivers/staging/media/atomisp/pci/atomisp_subdev.c:49:65: warning: implicit conversion from enumeration type 'enum ia_css_frame_format' to different enumeration type 'enum atomisp_input_format' [-Wenum-conversion] { V4L2_MBUS_FMT_CUSTOM_NV21, 12, 12, CSS_FRAME_FORMAT_NV21, 0, CSS_FRAME_FORMAT_NV21 }, ~ ^~~~~~~~~~~~~~~~~~~~~ ../drivers/staging/media/atomisp//pci/atomisp_compat.h:101:32: note: expanded from macro 'CSS_FRAME_FORMAT_NV21' #define CSS_FRAME_FORMAT_NV21 CSS_ID(CSS_FRAME_FORMAT_NV21) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../drivers/staging/media/atomisp//pci/atomisp_compat_css20.h:117:22: note: expanded from macro 'CSS_ID' #define CSS_ID(val) (IA_ ## val) ^~~~~~~~~~ <scratch space>:69:1: note: expanded from here IA_CSS_FRAME_FORMAT_NV21 ^~~~~~~~~~~~~~~~~~~~~~~~ ../drivers/staging/media/atomisp/pci/atomisp_subdev.c:49:39: warning: implicit conversion from enumeration type 'enum ia_css_frame_format' to different enumeration type 'enum atomisp_input_format' [-Wenum-conversion] { V4L2_MBUS_FMT_CUSTOM_NV21, 12, 12, CSS_FRAME_FORMAT_NV21, 0, CSS_FRAME_FORMAT_NV21 }, ~ ^~~~~~~~~~~~~~~~~~~~~ ../drivers/staging/media/atomisp//pci/atomisp_compat.h:101:32: note: expanded from macro 'CSS_FRAME_FORMAT_NV21' #define CSS_FRAME_FORMAT_NV21 CSS_ID(CSS_FRAME_FORMAT_NV21) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../drivers/staging/media/atomisp//pci/atomisp_compat_css20.h:117:22: note: expanded from macro 'CSS_ID' #define CSS_ID(val) (IA_ ## val) ^~~~~~~~~~ <scratch space>:68:1: note: expanded from here IA_CSS_FRAME_FORMAT_NV21 ^~~~~~~~~~~~~~~~~~~~~~~~ ../drivers/staging/media/atomisp/pci/atomisp_subdev.c:48:65: warning: implicit conversion from enumeration type 'enum ia_css_frame_format' to different enumeration type 'enum atomisp_input_format' [-Wenum-conversion] { V4L2_MBUS_FMT_CUSTOM_NV12, 12, 12, CSS_FRAME_FORMAT_NV12, 0, CSS_FRAME_FORMAT_NV12 }, ~ ^~~~~~~~~~~~~~~~~~~~~ ../drivers/staging/media/atomisp//pci/atomisp_compat.h:99:32: note: expanded from macro 'CSS_FRAME_FORMAT_NV12' #define CSS_FRAME_FORMAT_NV12 CSS_ID(CSS_FRAME_FORMAT_NV12) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../drivers/staging/media/atomisp//pci/atomisp_compat_css20.h:117:22: note: expanded from macro 'CSS_ID' #define CSS_ID(val) (IA_ ## val) ^~~~~~~~~~ <scratch space>:67:1: note: expanded from here IA_CSS_FRAME_FORMAT_NV12 ^~~~~~~~~~~~~~~~~~~~~~~~ ../drivers/staging/media/atomisp/pci/atomisp_subdev.c:48:39: warning: implicit conversion from enumeration type 'enum ia_css_frame_format' to different enumeration type 'enum atomisp_input_format' [-Wenum-conversion] { V4L2_MBUS_FMT_CUSTOM_NV12, 12, 12, CSS_FRAME_FORMAT_NV12, 0, CSS_FRAME_FORMAT_NV12 }, ~ ^~~~~~~~~~~~~~~~~~~~~ ../drivers/staging/media/atomisp//pci/atomisp_compat.h:99:32: note: expanded from macro 'CSS_FRAME_FORMAT_NV12' #define CSS_FRAME_FORMAT_NV12 CSS_ID(CSS_FRAME_FORMAT_NV12) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../drivers/staging/media/atomisp//pci/atomisp_compat_css20.h:117:22: note: expanded from macro 'CSS_ID' #define CSS_ID(val) (IA_ ## val) ^~~~~~~~~~ <scratch space>:66:1: note: expanded from here IA_CSS_FRAME_FORMAT_NV12 ^~~~~~~~~~~~~~~~~~~~~~~~ ../drivers/staging/media/atomisp/pci/atomisp_subdev.c:47:34: warning: implicit conversion from enumeration type 'enum ia_css_frame_format' to different enumeration type 'enum atomisp_input_format' [-Wenum-conversion] { MEDIA_BUS_FMT_JPEG_1X8, 8, 8, CSS_FRAME_FORMAT_BINARY_8, 0, ATOMISP_INPUT_FORMAT_BINARY_8 }, ~ ^~~~~~~~~~~~~~~~~~~~~~~~~ ../drivers/staging/media/atomisp//pci/atomisp_compat.h:118:35: note: expanded from macro 'CSS_FRAME_FORMAT_BINARY_8' #define CSS_FRAME_FORMAT_BINARY_8 CSS_ID(CSS_FRAME_FORMAT_BINARY_8) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../drivers/staging/media/atomisp//pci/atomisp_compat_css20.h:117:22: note: expanded from macro 'CSS_ID' #define CSS_ID(val) (IA_ ## val) ^~~~~~~~~~ <scratch space>:65:1: note: expanded from here IA_CSS_FRAME_FORMAT_BINARY_8 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ 5 warnings generated. Please let me know if there are any comments, cheers! Nathan