diff options
| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2012-01-06 12:06:51 (GMT) |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-02-14 01:39:03 (GMT) |
| commit | e3de2be7368d2983bd7f7ddb6e9cf5ea32363128 (patch) | |
| tree | 810c6a3d5fe404ebbe98f98561b1b9b49ac6e4fb /drivers/mmc/host/tmio_mmc_dma.c | |
| parent | dd13b4ed4650bb3a7d6c86b549ab66a6aa0c00d8 (diff) | |
| download | linux-e3de2be7368d2983bd7f7ddb6e9cf5ea32363128.tar.xz | |
mmc: tmio_mmc: fix card eject during IO with DMA
When DMA is in use and the card is ejected during IO, DMA transfers have to
be terminated, otherwise the dmaengine driver fails to operate properly,
when the card is re-inserted.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host/tmio_mmc_dma.c')
| -rw-r--r-- | drivers/mmc/host/tmio_mmc_dma.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/mmc/host/tmio_mmc_dma.c b/drivers/mmc/host/tmio_mmc_dma.c index 7a6e6cc..8253ec1 100644 --- a/drivers/mmc/host/tmio_mmc_dma.c +++ b/drivers/mmc/host/tmio_mmc_dma.c @@ -34,6 +34,18 @@ void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable) #endif } +void tmio_mmc_abort_dma(struct tmio_mmc_host *host) +{ + tmio_mmc_enable_dma(host, false); + + if (host->chan_rx) + dmaengine_terminate_all(host->chan_rx); + if (host->chan_tx) + dmaengine_terminate_all(host->chan_tx); + + tmio_mmc_enable_dma(host, true); +} + static void tmio_mmc_start_dma_rx(struct tmio_mmc_host *host) { struct scatterlist *sg = host->sg_ptr, *sg_tmp; |