diff options
| author | Pierre Ossman <drzeus@drzeus.cx> | 2007-04-13 22:47:01 +0200 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2007-05-01 13:04:12 +0200 |
| commit | 976d9276c826d6b35e4a2478fd4978dbd63bdd6f (patch) | |
| tree | 0d90e7f4c96a850503776218fec74db1ead46963 | |
| parent | 14d836e7499c53a1f6a65086c3d11600e871a971 (diff) | |
mmc: enforce correct sg list
Now that we've fixed our only offender when it comes to strange sg
list, add a check so that future users keep the sg list proper with
regard to transfer size.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| -rw-r--r-- | drivers/mmc/mmc.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 4a73e8b2428d..e8f896c61b34 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -99,6 +99,10 @@ EXPORT_SYMBOL(mmc_request_done); void mmc_start_request(struct mmc_host *host, struct mmc_request *mrq) { +#ifdef CONFIG_MMC_DEBUG + unsigned int i, sz; +#endif + pr_debug("%s: starting CMD%u arg %08x flags %08x\n", mmc_hostname(host), mrq->cmd->opcode, mrq->cmd->arg, mrq->cmd->flags); @@ -113,6 +117,13 @@ mmc_start_request(struct mmc_host *host, struct mmc_request *mrq) BUG_ON(mrq->data->blocks * mrq->data->blksz > host->max_req_size); +#ifdef CONFIG_MMC_DEBUG + sz = 0; + for (i = 0;i < mrq->data->sg_len;i++) + sz += mrq->data->sg[i].length; + BUG_ON(sz != mrq->data->blocks * mrq->data->blksz); +#endif + mrq->cmd->data = mrq->data; mrq->data->error = 0; mrq->data->mrq = mrq; |