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.ha...@pengutronix.de>
Cc: Chris Ball <c...@laptop.org>
Cc: linux-mmc@vger.kernel.org
---
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 14aa213..b87143d 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;
}
}
--
1.7.7.1
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
