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| author | Robin Getz <robin.getz@analog.com> | 2009-04-23 20:56:42 +0000 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2009-06-12 06:11:29 -0400 |
| commit | 76068c3c5dee4332f532573b6423d75c3e14f660 (patch) | |
| tree | e60cceba55d68303b41685a9f7f7cf50781cc5ca | |
| parent | bc4d6f36db4b24bf328a5fd70038a2e609b9f028 (diff) | |
Blackfin: annotate anomaly 05000119 in core DMA code
Add a reminder note to avoid the DMA_DONE bit in our DMA core code.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| -rw-r--r-- | 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 704419e4da2..763ed84ba45 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); |