Signed-off-by: Lei Wen <lei...@marvell.com>
---
drivers/mmc/mmc.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index cf4ea16..5ff1c54 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -92,6 +92,11 @@ mmc_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const
void*src)
blklen = mmc->write_bl_len;
+ if (start > mmc->block_dev.lba || (start + blkcnt) >
mmc->block_dev.lba) {
+ puts("operation exceed mmc boundary..\n
+ This devices only have 0x%x blocks\n", mmc->block_dev.lba);
+ return 0;
+ }
err = mmc_set_blocklen(mmc, mmc->write_bl_len);
if (err) {
@@ -219,6 +224,11 @@ static ulong mmc_bread(int dev_num, ulong start, lbaint_t
blkcnt, void *dst)
if (!mmc)
return 0;
+ if (start > mmc->block_dev.lba || (start + blkcnt) >
mmc->block_dev.lba) {
+ puts("operation exceed mmc boundary..\n
+ This devices only have 0x%x blocks\n", mmc->block_dev.lba);
+ return 0;
+ }
/* We always do full block reads from the card */
err = mmc_set_blocklen(mmc, mmc->read_bl_len);
--
1.7.0.4
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