[PATCH 23/62] Blackfin: annotate anomaly 05000119 in core DMA code

[Mike Frysinger]

From: Robin Getz <robin.getz@xxxxxxxxxx>

Add a reminder note to avoid the DMA_DONE bit in our DMA core code.

Signed-off-by: Robin Getz <robin.getz@xxxxxxxxxx>
Signed-off-by: Mike Frysinger <vapier@xxxxxxxxxx>
---
 arch/blackfin/kernel/bfin_dma_5xx.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c
index 704419e..763ed84 100644
--- a/arch/blackfin/kernel/bfin_dma_5xx.c
+++ b/arch/blackfin/kernel/bfin_dma_5xx.c
@@ -20,6 +20,11 @@
 #include <asm/dma.h>
 #include <asm/uaccess.h>
 
+/*
+ * To make sure we work around 05000119 - we always check DMA_DONE bit,
+ * never the DMA_RUN bit
+ */
+
 struct dma_channel dma_ch[MAX_DMA_CHANNELS];
 EXPORT_SYMBOL(dma_ch);
 
-- 
1.6.3.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/