use dma chan 0

diff --git a/comedi/drivers/gsc_hpdi.c b/comedi/drivers/gsc_hpdi.c
index d8430e001c2a5991b222f4a293e37a585d6b1f85..904fe3cdb6698139edfd84b61bd3c0b8589cb65e 100644 (file)
--- a/comedi/drivers/gsc_hpdi.c
+++ b/comedi/drivers/gsc_hpdi.c
@@ -838,7 +838,10 @@ static void handle_interrupt(int irq, void *d, struct pt_regs *regs)
                writeb((dma0_status & PLX_DMA_EN_BIT) | PLX_CLEAR_DMA_INTR_BIT, priv(dev)->plx9080_iobase + PLX_DMA0_CS_REG);
 
                DEBUG_PRINT("dma0 status 0x%x\n", dma0_status);
-
+               if(dma0_status & PLX_DMA_EN_BIT)
+               {
+                       drain_dma_buffers(dev, 0);
+               }
                DEBUG_PRINT(" cleared dma ch0 interrupt\n");
        }
        comedi_spin_unlock_irqrestore( &dev->spinlock, flags );
@@ -848,14 +851,9 @@ static void handle_interrupt(int irq, void *d, struct pt_regs *regs)
        dma1_status = readb(priv(dev)->plx9080_iobase + PLX_DMA1_CS_REG);
        if(plx_status & ICS_DMA1_A)     // XXX
        {       // dma chan 1 interrupt
-               // XXX possible race
                writeb((dma1_status & PLX_DMA_EN_BIT) | PLX_CLEAR_DMA_INTR_BIT, priv(dev)->plx9080_iobase + PLX_DMA1_CS_REG);
                DEBUG_PRINT("dma1 status 0x%x\n", dma1_status);
 
-               if(dma1_status & PLX_DMA_EN_BIT)
-               {
-                       drain_dma_buffers(dev, 1);
-               }
                DEBUG_PRINT(" cleared dma ch1 interrupt\n");
        }
        comedi_spin_unlock_irqrestore( &dev->spinlock, flags );