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dmaengine: slave means at least one of DMA_SLAVE, DMA_CYCLIC 

When check for capabilities recognize slave support by either DMA_SLAVE or
DMA_CYCLIC bit set. If we don't do that the user can't get a normally worked
DMA support for engines that doesn't have one of the mentioned bits set.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
hifive-unleashed-5.1
Andy Shevchenko 2016-05-10 20:43:34 +03:00 committed by Vinod Koul
parent 757d12e584
commit dd4e91d538
1 changed files with 2 additions and 2 deletions
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4
drivers/dma/dmaengine.c
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@ -482,8 +482,8 @@ int dma_get_slave_caps(struct dma_chan *chan, struct dma_slave_caps *caps)
device = chan->device;
/* check if the channel supports slave transactions */
if ((!test_bit(DMA_SLAVE, device->cap_mask.bits)) ||
(!test_bit(DMA_CYCLIC, device->cap_mask.bits)))
if (!(test_bit(DMA_SLAVE, device->cap_mask.bits) ||
test_bit(DMA_CYCLIC, device->cap_mask.bits)))
return -ENXIO;
/*