From: Dan Carpenter dan.carpenter@oracle.com
[ Upstream commit 3d5367a0426da61c7cb616cc85b6239467e261dd ]
This code just reads from memory without caring about the data itself. However static checkers complain that "tmp" is never properly initialized. Initialize it to zero and change the name to "dummy" to show that we don't care about the value stored in it.
Link: https://lkml.kernel.org/r/YtZ8mKJmktA2GaHB@kili Fixes: c4b6cb884011 ("selftests/vm: add hugetlb madvise MADV_DONTNEED MADV_REMOVE test") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Acked-by: Souptick Joarder (HPE) jrdr.linux@gmail.com Reviewed-by: Mike Kravetz mike.kravetz@oracle.com Cc: Shuah Khan shuah@kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- tools/testing/selftests/vm/hugetlb-madvise.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/vm/hugetlb-madvise.c b/tools/testing/selftests/vm/hugetlb-madvise.c index 6c6af40f5747..3c9943131881 100644 --- a/tools/testing/selftests/vm/hugetlb-madvise.c +++ b/tools/testing/selftests/vm/hugetlb-madvise.c @@ -89,10 +89,11 @@ void write_fault_pages(void *addr, unsigned long nr_pages)
void read_fault_pages(void *addr, unsigned long nr_pages) { - unsigned long i, tmp; + unsigned long dummy = 0; + unsigned long i;
for (i = 0; i < nr_pages; i++) - tmp += *((unsigned long *)(addr + (i * huge_page_size))); + dummy += *((unsigned long *)(addr + (i * huge_page_size))); }
int main(int argc, char **argv)