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@xxxxxxxxxxxxxx> Cc: Chris Ball <cjb@xxxxxxxxxx> Cc: linux-mmc@xxxxxxxxxxxxxxx --- drivers/mmc/host/mxcmmc.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c index 14aa213..4dc9008 100644 --- a/drivers/mmc/host/mxcmmc.c +++ b/drivers/mmc/host/mxcmmc.c @@ -730,7 +730,8 @@ static void mxcmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) dev_err(mmc_dev(host->mmc), "failed to config DMA channel. Falling back to PIO\n"); dma_release_channel(host->dma); - host->do_dma = 0; + host->dma = NULL; + host->dma = 0; } } -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
