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| author | Pierre Ossman <drzeus@drzeus.cx> | 2007-05-13 22:39:23 +0200 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2007-05-14 18:51:37 +0200 |
| commit | 6ba736a10e4ae63b38ccfee9f22b3263a6e5d050 (patch) | |
| tree | 83d35c393117d572d863cde7993a594db30f280d | |
| parent | c0f3b6c777af071063984fdbc4efb6c904f665f4 (diff) | |
| download | kernel_samsung_espresso10-6ba736a10e4ae63b38ccfee9f22b3263a6e5d050.zip kernel_samsung_espresso10-6ba736a10e4ae63b38ccfee9f22b3263a6e5d050.tar.gz kernel_samsung_espresso10-6ba736a10e4ae63b38ccfee9f22b3263a6e5d050.tar.bz2 | |
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 <drzeus@drzeus.cx>
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index ff5bf73..a359efd 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); } |