diff --git a/drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/debug/src/ia_css_debug.c b/drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/debug/src/ia_css_debug.c
index dd1127a21494d866f1311d9c96c55a39fbcbdfa0..f22d73b56bc63e7302cd34d1f7f6caccb905a57c 100644
--- a/drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/debug/src/ia_css_debug.c
+++ b/drivers/staging/media/atomisp/pci/atomisp2/css2400/runtime/debug/src/ia_css_debug.c
@@ -2567,6 +2567,7 @@ ia_css_debug_mode_enable_dma_channel(int dma_id,
 	return rc;
 }
 
+static
 void dtrace_dot(const char *fmt, ...)
 {
 	va_list ap;