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/host | |
| 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/host')
| -rw-r--r-- | drivers/mmc/host/atmel-mci.c | 13 |
1 files changed, 12 insertions, 1 deletions
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; |