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authorWolfgang Denk <wd@denx.de>2010-09-21 09:34:16 +0200
committerWolfgang Denk <wd@denx.de>2010-09-21 09:34:16 +0200
commit0cc89de8ef60214083739904b011f6c255922723 (patch)
tree17adeeae646a93fb7ee1e331915123cd8814a6df /drivers
parent6561863678822847be92c3bd06ae1d64acca4f6a (diff)
parent07517e7f4f582d1607adbc444bab75af3ac4a7f9 (diff)
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Merge branch 'master' of /home/wd/git/u-boot/master
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/mmc.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index cf4ea16..80cd9bf 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 + blkcnt) > mmc->block_dev.lba) {
+ printf("MMC: block number 0x%lx exceeds max(0x%lx)",
+ start + blkcnt, 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 + blkcnt) > mmc->block_dev.lba) {
+ printf("MMC: block number 0x%lx exceeds max(0x%lx)",
+ start + blkcnt, mmc->block_dev.lba);
+ return 0;
+ }
/* We always do full block reads from the card */
err = mmc_set_blocklen(mmc, mmc->read_bl_len);