ia_css_isys_240?_init() are only used inside the C file where they are declared, mark them as static fixing: drivers/staging/media/atomisp/pci/runtime/isys/src/isys_init.c:24:20: warning: no previous prototype for 'ia_css_isys_2400_init' 24 | input_system_err_t ia_css_isys_2400_init(void) | ^~~~~~~~~~~~~~~~~~~~~ drivers/staging/media/atomisp/pci/runtime/isys/src/isys_init.c:87:20: warning: no previous prototype for 'ia_css_isys_2401_init' 87 | input_system_err_t ia_css_isys_2401_init(void) | ^~~~~~~~~~~~~~~~~~~~~ Reported-by: kernel test robot <lkp@xxxxxxxxx> Closes: https://lore.kernel.org/oe-kbuild-all/202307152046.rvhFGrbz-lkp@xxxxxxxxx/ Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> --- .../staging/media/atomisp/pci/runtime/isys/src/isys_init.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/media/atomisp/pci/runtime/isys/src/isys_init.c b/drivers/staging/media/atomisp/pci/runtime/isys/src/isys_init.c index 1a7b45bb4544..18bfe1010989 100644 --- a/drivers/staging/media/atomisp/pci/runtime/isys/src/isys_init.c +++ b/drivers/staging/media/atomisp/pci/runtime/isys/src/isys_init.c @@ -21,7 +21,7 @@ #include "isys_dma_public.h" /* isys2401_dma_set_max_burst_size() */ #include "isys_irq.h" -input_system_err_t ia_css_isys_2400_init(void) +static input_system_err_t ia_css_isys_2400_init(void) { backend_channel_cfg_t backend_ch0; backend_channel_cfg_t backend_ch1; @@ -84,7 +84,7 @@ input_system_err_t ia_css_isys_2400_init(void) return error; } -input_system_err_t ia_css_isys_2401_init(void) +static input_system_err_t ia_css_isys_2401_init(void) { ia_css_isys_csi_rx_lut_rmgr_init(); ia_css_isys_ibuf_rmgr_init(); -- 2.41.0