Commit 35016dd7 authored by Roel Kluin's avatar Roel Kluin Committed by David Woodhouse

mtd: ensure index is positive

The index is signed, make sure it is not negative
when we read the array element.
Signed-off-by: default avatarRoel Kluin <roel.kluin@gmail.com>
Signed-off-by: default avatarArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 61c3506c
......@@ -447,7 +447,7 @@ struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num)
for (i=0; i< MAX_MTD_DEVICES; i++)
if (mtd_table[i] == mtd)
ret = mtd_table[i];
} else if (num < MAX_MTD_DEVICES) {
} else if (num >= 0 && num < MAX_MTD_DEVICES) {
ret = mtd_table[num];
if (mtd && mtd != ret)
ret = NULL;
......
......@@ -112,7 +112,7 @@ static void fun_select_chip(struct mtd_info *mtd, int mchip_nr)
if (mchip_nr == -1) {
chip->cmd_ctrl(mtd, NAND_CMD_NONE, 0 | NAND_CTRL_CHANGE);
} else if (mchip_nr >= 0) {
} else if (mchip_nr >= 0 && mchip_nr < NAND_MAX_CHIPS) {
fun->mchip_number = mchip_nr;
chip->IO_ADDR_R = fun->io_base + fun->mchip_offsets[mchip_nr];
chip->IO_ADDR_W = chip->IO_ADDR_R;
......
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