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| author | Roel Kluin <roel.kluin@gmail.com> | 2009-11-03 20:49:18 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2009-11-30 10:50:46 +0100 |
| commit | 35016dd7e92cf0eb5ae2e811445dd52320c348d0 (patch) | |
| tree | b836cd329ed1fae21e323f9eee9c15c012423a62 /drivers/mtd/nand/fsl_upm.c | |
| parent | mtd: m25p80: make command buffer DMA-safe (diff) | |
| download | linux-35016dd7e92cf0eb5ae2e811445dd52320c348d0.tar.xz linux-35016dd7e92cf0eb5ae2e811445dd52320c348d0.zip | |
mtd: ensure index is positive
The index is signed, make sure it is not negative
when we read the array element.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/nand/fsl_upm.c')
| -rw-r--r-- | drivers/mtd/nand/fsl_upm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/nand/fsl_upm.c b/drivers/mtd/nand/fsl_upm.c index d120cd8d7267..071a60cb4204 100644 --- a/drivers/mtd/nand/fsl_upm.c +++ b/drivers/mtd/nand/fsl_upm.c @@ -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; |