wip

f1fb504e · Tomasz Wlostowski · 2d80667f · f1fb504e
Commit f1fb504e authored Sep 26, 2018 by Tomasz Wlostowski
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ft-irq.c kernel/ft-irq.c +7 -1

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--- a/kernel/ft-irq.c
+++ b/kernel/ft-irq.c
@@ -295,10 +295,16 @@ static void ft_dma_work(struct work_struct *work)
 	   a simple, crude spinlock (David, Fede, fixme please ;-) */

 	if (!spin_trylock(&ft->dma_lock))
+	{
+		printk("dma already in progress\n");
+		ft_irq_enable_restore(ft);
 		return;
+	}

+	
 	irq_stat = ft_ioread(ft, ft->ft_irq_base + TDC_EIC_REG_EIC_ISR);
-
+	printk("dma read %x\n", irq_stat);
+	
 	irq_stat &= TDC_EIC_EIC_IMR_TDC_DMA_MASK;
 	irq_stat >>= TDC_EIC_EIC_IMR_TDC_DMA_SHIFT;
 	ft->dma_chan_mask = irq_stat;