The sparse tool complains as follows: tools/testing/nvdimm/test/iomap.c:65:14: warning: symbol '__nfit_test_ioremap' was not declared. Should it be static? This symbol is not used outside of iomap.c, so this commit marks it static. Reported-by: Hulk Robot <hulkci(a)huawei.com&gt; Signed-off-by: Zou Wei <zou_wei(a)huawei.com&gt; --- tools/testing/nvdimm/test/iomap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/nvdimm/test/iomap.c b/tools/testing/nvdimm/test/iomap.c index c62d372..ed563bd 100644 --- a/tools/testing/nvdimm/test/iomap.c +++ b/tools/testing/nvdimm/test/iomap.c @@ -62,7 +62,7 @@ struct nfit_test_resource *get_nfit_res(resource_size_t resource) } EXPORT_SYMBOL(get_nfit_res); -void __iomem *__nfit_test_ioremap(resource_size_t offset, unsigned long size, +static void __iomem *__nfit_test_ioremap(resource_size_t offset, unsigned long size, void __iomem *(*fallback_fn)(resource_size_t, unsigned long)) { struct nfit_test_resource *nfit_res = get_nfit_res(offset); -- 2.6.2