From: Sascha Hauer <s.hauer@pengutronix.de> To: linux-arm-kernel@lists.infradead.org Cc: Sascha Hauer <s.hauer@pengutronix.de>, Chris Ball <cjb@laptop.org>, linux-mmc@vger.kernel.org Subject: [PATCH] mmc mxcmmc: fix falling back to PIO Date: Fri, 11 Nov 2011 16:28:05 +0100 [thread overview] Message-ID: <1321025285-22821-1-git-send-email-s.hauer@pengutronix.de> (raw) 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: Chris Ball <cjb@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
WARNING: multiple messages have this Message-ID (diff)
From: s.hauer@pengutronix.de (Sascha Hauer) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH] mmc mxcmmc: fix falling back to PIO Date: Fri, 11 Nov 2011 16:28:05 +0100 [thread overview] Message-ID: <1321025285-22821-1-git-send-email-s.hauer@pengutronix.de> (raw) 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: Chris Ball <cjb@laptop.org> 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
next reply other threads:[~2011-11-11 15:28 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-11-11 15:28 Sascha Hauer [this message] 2011-11-11 15:28 ` [PATCH] mmc mxcmmc: fix falling back to PIO Sascha Hauer 2011-11-11 16:13 ` Chris Ball 2011-11-11 16:13 ` Chris Ball -- strict thread matches above, loose matches on Subject: below -- 2011-08-25 9:06 Sascha Hauer 2011-08-25 9:06 ` Sascha Hauer 2011-08-25 9:31 ` Sascha Hauer 2011-08-25 9:31 ` Sascha Hauer
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