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dmaengine: ti-dma-crossbar: Fix dra7 reserve function

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DMA crossbar uses 'xbar->dma_inuse' variable to manage allocated routes.
Each bit represents respective DMA channel. If the channel is free, bit
is set to '0', if channel is allocated, bit should be set to '1'.

In reserve function, the bits for requested DMA channels are cleared, so
they are not really reserved, but freed and become ready for allocation.

Signed-off-by: Alexander Smirnov <asmirnov@ilbers.de>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Alexander Smirnov 2017-08-24 17:02:59 +03:00 committed by Vinod Koul
parent b753351ec8
commit a2f6721b42
1 changed files with 1 additions and 1 deletions
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2
drivers/dma/ti-dma-crossbar.c
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@ -308,7 +308,7 @@ static const struct of_device_id ti_dra7_master_match[] = {
static inline void ti_dra7_xbar_reserve(int offset, int len, unsigned long *p)
{
for (; len > 0; len--)
clear_bit(offset + (len - 1), p);
set_bit(offset + (len - 1), p);
}
static int ti_dra7_xbar_probe(struct platform_device *pdev)