diff options
| author | Sascha Hauer <s.hauer@pengutronix.de> | 2011-11-11 16:28:05 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-12-21 12:58:31 -0800 |
| commit | 572b113fe89287f81dad1a0f9057d48e0b17e910 (patch) | |
| tree | 7bc45f4519f35f2f73b696338b3fa14d8102d3d6 | |
| parent | f986d9886478c6761c9cc3f44cbe15f96db5d6e1 (diff) | |
mmc: mxcmmc: fix falling back to PIO
commit e58f516ff4730c4047c3f104b061f7a03e9a263c upstream.
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>
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -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 14aa213b00d..b87143d0aeb 100644 --- a/drivers/mmc/host/mxcmmc.c +++ b/drivers/mmc/host/mxcmmc.c @@ -731,6 +731,7 @@ 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; } } |