From a2f6721b42bd503e2cced065f7dfbe8e79d59a09 Mon Sep 17 00:00:00 2001 From: Alexander Smirnov Date: Thu, 24 Aug 2017 17:02:59 +0300 Subject: [PATCH] dmaengine: ti-dma-crossbar: Fix dra7 reserve function 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 Acked-by: Peter Ujfalusi Signed-off-by: Vinod Koul --- drivers/dma/ti-dma-crossbar.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/ti-dma-crossbar.c b/drivers/dma/ti-dma-crossbar.c index 2403475..2f65a8f 100644 --- a/drivers/dma/ti-dma-crossbar.c +++ b/drivers/dma/ti-dma-crossbar.c @@ -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) -- 2.7.4