From 6ba736a10e4ae63b38ccfee9f22b3263a6e5d050 Mon Sep 17 00:00:00 2001 From: Pierre Ossman Date: Sun, 13 May 2007 22:39:23 +0200 Subject: sdhci: handle dma boundary interrupts When the device hits certain memory boundaries, it signals an interrupt and expects to be serviced. We don't need the feature but we need to make sure the device doesn't stall. Signed-off-by: Pierre Ossman --- drivers/mmc/host/sdhci.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers') diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index ff5bf73cdd2..a359efdd77e 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -963,6 +963,15 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) if (intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL)) sdhci_transfer_pio(host); + /* + * We currently don't do anything fancy with DMA + * boundaries, but as we can't disable the feature + * we need to at least restart the transfer. + */ + if (intmask & SDHCI_INT_DMA_END) + writel(readl(host->ioaddr + SDHCI_DMA_ADDRESS), + host->ioaddr + SDHCI_DMA_ADDRESS); + if (intmask & SDHCI_INT_DATA_END) sdhci_finish_data(host); } -- cgit v1.2.3-70-g09d2