select: deal with math overflow from borderline valid userland data

[linux-2.6-omap-h63xx.git] / drivers / mtd / ssfdc.c

diff --git a/drivers/mtd/ssfdc.c b/drivers/mtd/ssfdc.c
index e834cc16c9f997c8feefab76cad2a97d3b0ad867..33a5d6ed6f18aa66181feb4ac84774343e68d5d3 100644 (file)
--- a/drivers/mtd/ssfdc.c
+++ b/drivers/mtd/ssfdc.c
@@ -311,7 +311,6 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
 
        ssfdc->mbd.mtd = mtd;
        ssfdc->mbd.devnum = -1;
-       ssfdc->mbd.blksize = SECTOR_SIZE;
        ssfdc->mbd.tr = tr;
        ssfdc->mbd.readonly = 1;
 
@@ -322,8 +321,7 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
        DEBUG(MTD_DEBUG_LEVEL1,
                "SSFDC_RO: cis_block=%d,erase_size=%d,map_len=%d,n_zones=%d\n",
                ssfdc->cis_block, ssfdc->erase_size, ssfdc->map_len,
-               (ssfdc->map_len + MAX_PHYS_BLK_PER_ZONE - 1) /
-               MAX_PHYS_BLK_PER_ZONE);
+               DIV_ROUND_UP(ssfdc->map_len, MAX_PHYS_BLK_PER_ZONE));
 
        /* Set geometry */
        ssfdc->heads = 16;
@@ -446,6 +444,7 @@ static struct mtd_blktrans_ops ssfdcr_tr = {
        .name           = "ssfdc",
        .major          = SSFDCR_MAJOR,
        .part_bits      = SSFDCR_PARTN_BITS,
+       .blksize        = SECTOR_SIZE,
        .getgeo         = ssfdcr_getgeo,
        .readsect       = ssfdcr_readsect,
        .add_mtd        = ssfdcr_add_mtd,