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| author | Alexander Kochetkov <al.kochet@gmail.com> | 2018-02-20 14:35:55 +0300 |
|---|---|---|
| committer | Jaehoon Chung <jh80.chung@samsung.com> | 2018-02-23 15:57:41 +0900 |
| commit | 76584e33988fc9f6c80199e04ca6e249baf7289a (patch) | |
| tree | f3b455d4882973f45dccbfef8f8424dbc3a036a6 | |
| parent | 8a856db238072dbee370cb0f01648fe0462fe677 (diff) | |
mmc: fix off-by-one bug in mmc_startup_v4()
MMC card with EXT_CSD_REV value 9 will trigger off-by-one
bug while accessing mmc_versions array. The patch fix that.
Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
| -rw-r--r-- | drivers/mmc/mmc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 31f65f6e24..c930893300 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -1969,7 +1969,7 @@ static int mmc_startup_v4(struct mmc *mmc) return -ENOMEM; memcpy(mmc->ext_csd, ext_csd, MMC_MAX_BLOCK_LEN); - if (ext_csd[EXT_CSD_REV] > ARRAY_SIZE(mmc_versions)) + if (ext_csd[EXT_CSD_REV] >= ARRAY_SIZE(mmc_versions)) return -EINVAL; mmc->version = mmc_versions[ext_csd[EXT_CSD_REV]]; |