1 files changed, 20 insertions, 15 deletions

diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c
index 1a05cf37851e..3dbb1b38db66 100644
--- a/drivers/mtd/mtdconcat.c
+++ b/drivers/mtd/mtdconcat.c
@@ -197,7 +197,7 @@ concat_writev(struct mtd_info *mtd, const struct kvec *vecs,
                         continue;
                 }
 
-                size = min(total_len, (size_t)(subdev->size - to));
+                size = min_t(uint64_t, total_len, subdev->size - to);
                 wsize = size; /* store for future use */
 
                 entry_high = entry_low;
@@ -385,7 +385,7 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr)
         struct mtd_concat *concat = CONCAT(mtd);
         struct mtd_info *subdev;
         int i, err;
-        u_int32_t length, offset = 0;
+        uint64_t length, offset = 0;
         struct erase_info *erase;
 
         if (!(mtd->flags & MTD_WRITEABLE))
@@ -518,7 +518,7 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr)
         return 0;
 }
 
-static int concat_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int concat_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct mtd_concat *concat = CONCAT(mtd);
         int i, err = -EINVAL;
@@ -528,7 +528,7 @@ static int concat_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
 
         for (i = 0; i < concat->num_subdev; i++) {
                 struct mtd_info *subdev = concat->subdev[i];
-                size_t size;
+                uint64_t size;
 
                 if (ofs >= subdev->size) {
                         size = 0;
@@ -556,7 +556,7 @@ static int concat_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
         return err;
 }
 
-static int concat_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int concat_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct mtd_concat *concat = CONCAT(mtd);
         int i, err = 0;
@@ -566,7 +566,7 @@ static int concat_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
 
         for (i = 0; i < concat->num_subdev; i++) {
                 struct mtd_info *subdev = concat->subdev[i];
-                size_t size;
+                uint64_t size;
 
                 if (ofs >= subdev->size) {
                         size = 0;
@@ -696,7 +696,7 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
         int i;
         size_t size;
         struct mtd_concat *concat;
-        u_int32_t max_erasesize, curr_erasesize;
+        uint32_t max_erasesize, curr_erasesize;
         int num_erase_region;
 
         printk(KERN_NOTICE "Concatenating MTD devices:\n");
@@ -842,12 +842,14 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
                 concat->mtd.erasesize = curr_erasesize;
                 concat->mtd.numeraseregions = 0;
         } else {
+                uint64_t tmp64;
+
                 /*
                  * erase block size varies across the subdevices: allocate
                  * space to store the data describing the variable erase regions
                  */
                 struct mtd_erase_region_info *erase_region_p;
-                u_int32_t begin, position;
+                uint64_t begin, position;
 
                 concat->mtd.erasesize = max_erasesize;
                 concat->mtd.numeraseregions = num_erase_region;
@@ -879,8 +881,9 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
                                         erase_region_p->offset = begin;
                                         erase_region_p->erasesize =
                                             curr_erasesize;
-                                        erase_region_p->numblocks =
-                                            (position - begin) / curr_erasesize;
+                                        tmp64 = position - begin;
+                                        do_div(tmp64, curr_erasesize);
+                                        erase_region_p->numblocks = tmp64;
                                         begin = position;
 
                                         curr_erasesize = subdev[i]->erasesize;
@@ -897,9 +900,9 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
                                                 erase_region_p->offset = begin;
                                                 erase_region_p->erasesize =
                                                     curr_erasesize;
-                                                erase_region_p->numblocks =
-                                                    (position -
-                                                     begin) / curr_erasesize;
+                                                tmp64 = position - begin;
+                                                do_div(tmp64, curr_erasesize);
+                                                erase_region_p->numblocks = tmp64;
                                                 begin = position;
 
                                                 curr_erasesize =
@@ -909,14 +912,16 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
                                         }
                                         position +=
                                             subdev[i]->eraseregions[j].
-                                            numblocks * curr_erasesize;
+                                            numblocks * (uint64_t)curr_erasesize;
                                 }
                         }
                 }
                 /* Now write the final entry */
                 erase_region_p->offset = begin;
                 erase_region_p->erasesize = curr_erasesize;
-                erase_region_p->numblocks = (position - begin) / curr_erasesize;
+                tmp64 = position - begin;
+                do_div(tmp64, curr_erasesize);
+                erase_region_p->numblocks = tmp64;
         }
 
         return &concat->mtd;