1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/mtd/tests/oobtest.c b/drivers/mtd/tests/oobtest.c
index f19ab1acde1f..dc4f9602b97e 100644
--- a/drivers/mtd/tests/oobtest.c
+++ b/drivers/mtd/tests/oobtest.c
@@ -120,7 +120,7 @@ static int verify_eraseblock(int ebnum)
         int i;
         struct mtd_oob_ops ops;
         int err = 0;
-        loff_t addr = ebnum * mtd->erasesize;
+        loff_t addr = (loff_t)ebnum * mtd->erasesize;
 
         prandom_bytes_state(&rnd_state, writebuf, use_len_max * pgcnt);
         for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) {
@@ -214,7 +214,7 @@ static int verify_eraseblock_in_one_go(int ebnum)
 {
         struct mtd_oob_ops ops;
         int err = 0;
-        loff_t addr = ebnum * mtd->erasesize;
+        loff_t addr = (loff_t)ebnum * mtd->erasesize;
         size_t len = mtd->ecclayout->oobavail * pgcnt;
 
         prandom_bytes_state(&rnd_state, writebuf, len);
@@ -568,7 +568,7 @@ static int __init mtd_oobtest_init(void)
                 size_t sz = mtd->ecclayout->oobavail;
                 if (bbt[i] || bbt[i + 1])
                         continue;
-                addr = (i + 1) * mtd->erasesize - mtd->writesize;
+                addr = (loff_t)(i + 1) * mtd->erasesize - mtd->writesize;
                 prandom_bytes_state(&rnd_state, writebuf, sz * cnt);
                 for (pg = 0; pg < cnt; ++pg) {
                         ops.mode      = MTD_OPS_AUTO_OOB;
@@ -598,7 +598,7 @@ static int __init mtd_oobtest_init(void)
                         continue;
                 prandom_bytes_state(&rnd_state, writebuf,
                                         mtd->ecclayout->oobavail * 2);
-                addr = (i + 1) * mtd->erasesize - mtd->writesize;
+                addr = (loff_t)(i + 1) * mtd->erasesize - mtd->writesize;
                 ops.mode      = MTD_OPS_AUTO_OOB;
                 ops.len       = 0;
                 ops.retlen    = 0;