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authorPierre Ossman <drzeus@drzeus.cx>2007-05-13 16:39:23 -0400
committerPierre Ossman <drzeus@drzeus.cx>2007-05-14 12:51:37 -0400
commit6ba736a10e4ae63b38ccfee9f22b3263a6e5d050 (patch)
tree83d35c393117d572d863cde7993a594db30f280d /drivers/mmc/host/sdhci.c
parentc0f3b6c777af071063984fdbc4efb6c904f665f4 (diff)
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>
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
-rw-r--r--drivers/mmc/host/sdhci.c9
1 files changed, 9 insertions, 0 deletions
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)
963 if (intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL)) 963 if (intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL))
964 sdhci_transfer_pio(host); 964 sdhci_transfer_pio(host);
965 965
966 /*
967 * We currently don't do anything fancy with DMA
968 * boundaries, but as we can't disable the feature
969 * we need to at least restart the transfer.
970 */
971 if (intmask & SDHCI_INT_DMA_END)
972 writel(readl(host->ioaddr + SDHCI_DMA_ADDRESS),
973 host->ioaddr + SDHCI_DMA_ADDRESS);
974
966 if (intmask & SDHCI_INT_DATA_END) 975 if (intmask & SDHCI_INT_DATA_END)
967 sdhci_finish_data(host); 976 sdhci_finish_data(host);
968 } 977 }