A missing header causes the compiler to warn that the function below is not forward declared. >> drivers/gpu/drm/imagination/pvr_fw_meta.c:33:1: warning: no previous prototype for function 'pvr_meta_cr_read32' [-Wmissing-prototypes] 33 | pvr_meta_cr_read32(struct pvr_device *pvr_dev, u32 reg_addr, u32 *reg_value_out) | ^ drivers/gpu/drm/imagination/pvr_fw_meta.c:32:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 32 | int | ^ | static 1 warning generated. Include the correct header. Reported-by: Arnd Bergmann <arnd@xxxxxxxx> Reported-by: kernel test robot <lkp@xxxxxxxxx> Closes: https://lore.kernel.org/oe-kbuild-all/202311250226.Da2yiSKp-lkp@xxxxxxxxx/ Fixes: bb52a8dc84f2 ("drm/imagination: Implement firmware infrastructure and META FW support") Signed-off-by: Donald Robson <donald.robson@xxxxxxxxxx> --- drivers/gpu/drm/imagination/pvr_fw_meta.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/imagination/pvr_fw_meta.c b/drivers/gpu/drm/imagination/pvr_fw_meta.c index 119934c36184..c39beb70c317 100644 --- a/drivers/gpu/drm/imagination/pvr_fw_meta.c +++ b/drivers/gpu/drm/imagination/pvr_fw_meta.c @@ -4,6 +4,7 @@ #include "pvr_device.h" #include "pvr_fw.h" #include "pvr_fw_info.h" +#include "pvr_fw_meta.h" #include "pvr_gem.h" #include "pvr_rogue_cr_defs.h" #include "pvr_rogue_meta.h" -- 2.25.1