---

yaml --- r: 123744 b: refs/heads/master c: a50f18c h: refs/heads/master v: v3
git-mirror · Dec 11, 2008 · b1c1150 · b1c1150
1 parent f229391
commit b1c1150
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Showing 2 changed files with 15 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b1c056d20caa6fdd3481b348567f1f91e98aaa4b
+refs/heads/master: a50f18c70049a73bd663ff889ef10d1097fd53f9
diff --git a/trunk/arch/arm/plat-omap/dma.c b/trunk/arch/arm/plat-omap/dma.c
@@ -1848,9 +1848,22 @@ static int omap2_dma_handle_ch(int ch)
 		printk(KERN_INFO
 		       "DMA synchronization event drop occurred with device "
 		       "%d\n", dma_chan[ch].dev_id);
-	if (unlikely(status & OMAP2_DMA_TRANS_ERR_IRQ))
+	if (unlikely(status & OMAP2_DMA_TRANS_ERR_IRQ)) {
 		printk(KERN_INFO "DMA transaction error with device %d\n",
 		       dma_chan[ch].dev_id);
+		if (cpu_class_is_omap2()) {
+			/* Errata: sDMA Channel is not disabled
+			 * after a transaction error. So we explicitely
+			 * disable the channel
+			 */
+			u32 ccr;
+
+			ccr = dma_read(CCR(ch));
+			ccr &= ~OMAP_DMA_CCR_EN;
+			dma_write(ccr, CCR(ch));
+			dma_chan[ch].flags &= ~OMAP_DMA_ACTIVE;
+		}
+	}
 	if (unlikely(status & OMAP2_DMA_SECURE_ERR_IRQ))
 		printk(KERN_INFO "DMA secure error with device %d\n",
 		       dma_chan[ch].dev_id);