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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2011-11-11 15:28:05 (GMT) |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-12-10 21:18:34 (GMT) |
| commit | e58f516ff4730c4047c3f104b061f7a03e9a263c (patch) | |
| tree | dae62fe53aecf07f20001e5afd8e3400bc0dd614 | |
| parent | 053bf34f5aff499d7b595c500bbab5cbab3636e7 (diff) | |
| download | linux-e58f516ff4730c4047c3f104b061f7a03e9a263c.tar.xz | |
mmc: mxcmmc: fix falling back to PIO
When we can't configure the dma channel we want to fall
back to PIO. We do this by setting host->do_dma to zero.
This does not work as do_dma is used to see whether dma
can be used for the current transfer. Instead, we have
to set host->dma to NULL.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: <stable@kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
| -rw-r--r-- | drivers/mmc/host/mxcmmc.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c index 325ea61..8e0fbe9 100644 --- a/drivers/mmc/host/mxcmmc.c +++ b/drivers/mmc/host/mxcmmc.c @@ -732,6 +732,7 @@ static void mxcmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) "failed to config DMA channel. Falling back to PIO\n"); dma_release_channel(host->dma); host->do_dma = 0; + host->dma = NULL; } } |