diff options
| author | Mark Brown <broonie@linaro.org> | 2014-02-14 12:15:57 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-02-14 12:15:57 +0000 |
| commit | 6a7fe00e1f5a2e77b777b6e3b90c924c95bfa866 (patch) | |
| tree | 1446c710e4a76d79fe11b1fa01ccb508f0d12d67 /drivers/mmc | |
| parent | ccf1801b089f5575144c4346e4d7d3883a6c9163 (diff) | |
| parent | 8415e604452966f981f20cb4d8a8a30e38a772dd (diff) | |
Merge branch 'linux-linaro-lsk' into linux-linaro-lsk-androidlinux-linaro-lsk-v3.10-androidlinux-linaro-lsk-android
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/card/block.c | 7 | ||||
| -rw-r--r-- | drivers/mmc/host/atmel-mci.c | 13 |
2 files changed, 16 insertions, 4 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 4f98f8b3839..9cf08651d2b 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -1937,6 +1937,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) struct mmc_card *card = md->queue.card; struct mmc_host *host = card->host; unsigned long flags; + unsigned int cmd_flags = req ? req->cmd_flags : 0; #ifdef CONFIG_MMC_BLOCK_DEFERRED_RESUME if (mmc_bus_needs_resume(card->host)) @@ -1957,7 +1958,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) } mq->flags &= ~MMC_QUEUE_NEW_REQUEST; - if (req && req->cmd_flags & REQ_DISCARD) { + if (cmd_flags & REQ_DISCARD) { /* complete ongoing async transfer before issuing discard */ if (card->host->areq) mmc_blk_issue_rw_rq(mq, NULL); @@ -1966,7 +1967,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) ret = mmc_blk_issue_secdiscard_rq(mq, req); else ret = mmc_blk_issue_discard_rq(mq, req); - } else if (req && req->cmd_flags & REQ_FLUSH) { + } else if (cmd_flags & REQ_FLUSH) { /* complete ongoing async transfer before issuing flush */ if (card->host->areq) mmc_blk_issue_rw_rq(mq, NULL); @@ -1982,7 +1983,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) out: if ((!req && !(mq->flags & MMC_QUEUE_NEW_REQUEST)) || - (req && (req->cmd_flags & MMC_REQ_SPECIAL_MASK))) + (cmd_flags & MMC_REQ_SPECIAL_MASK)) /* * Release host when there are no more requests * and after special request(discard, flush) is done. diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index b5c95043f7e..84b054b0846 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -1188,11 +1188,22 @@ static void atmci_start_request(struct atmel_mci *host, iflags |= ATMCI_CMDRDY; cmd = mrq->cmd; cmdflags = atmci_prepare_command(slot->mmc, cmd); - atmci_send_command(host, cmd, cmdflags); + + /* + * DMA transfer should be started before sending the command to avoid + * unexpected errors especially for read operations in SDIO mode. + * Unfortunately, in PDC mode, command has to be sent before starting + * the transfer. + */ + if (host->submit_data != &atmci_submit_data_dma) + atmci_send_command(host, cmd, cmdflags); if (data) host->submit_data(host, data); + if (host->submit_data == &atmci_submit_data_dma) + atmci_send_command(host, cmd, cmdflags); + if (mrq->stop) { host->stop_cmdr = atmci_prepare_command(slot->mmc, mrq->stop); host->stop_cmdr |= ATMCI_CMDR_STOP_XFER; |