1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c
index 5f5777bd3f75..5060e608ea5d 100644
--- a/drivers/mtd/mtdconcat.c
+++ b/drivers/mtd/mtdconcat.c
@@ -750,6 +750,7 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
         struct mtd_concat *concat;
         uint32_t max_erasesize, curr_erasesize;
         int num_erase_region;
+        int max_writebufsize = 0;
 
         printk(KERN_NOTICE "Concatenating MTD devices:\n");
         for (i = 0; i < num_devs; i++)
@@ -776,7 +777,12 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
         concat->mtd.size = subdev[0]->size;
         concat->mtd.erasesize = subdev[0]->erasesize;
         concat->mtd.writesize = subdev[0]->writesize;
-        concat->mtd.writebufsize = subdev[0]->writebufsize;
+
+        for (i = 0; i < num_devs; i++)
+                if (max_writebufsize < subdev[i]->writebufsize)
+                        max_writebufsize = subdev[i]->writebufsize;
+        concat->mtd.writebufsize = max_writebufsize;
+
         concat->mtd.subpage_sft = subdev[0]->subpage_sft;
         concat->mtd.oobsize = subdev[0]->oobsize;
         concat->mtd.oobavail = subdev[0]->oobavail;