From mboxrd@z Thu Jan 1 00:00:00 1970 From: s.hauer@pengutronix.de (Sascha Hauer) Date: Fri, 11 Nov 2011 16:28:05 +0100 Subject: [PATCH] mmc mxcmmc: fix falling back to PIO Message-ID: <1321025285-22821-1-git-send-email-s.hauer@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 Cc: Chris Ball Cc: linux-mmc at 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