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authorHauke Mehrtens <hauke@hauke-m.de>2018-09-09 23:16:42 +0300
committerDavid S. Miller <davem@davemloft.net>2018-09-13 18:14:33 +0300
commitcc973aecf0b0541918c5ecabe6c90d1f709b5f89 (patch)
tree072a9a9ee587ebf3a07c71e3cbcf1405ab0b0602 /arch/mips/lantiq
parentaaf9253025e80cf8f62d7b33670e84e838eec5a3 (diff)
downloadlinux-cc973aecf0b0541918c5ecabe6c90d1f709b5f89.tar.xz
MIPS: lantiq: Do not enable IRQs in dma open
When a DMA channel is opened the IRQ should not get activated automatically, this allows it to pull data out manually without the help of interrupts. This is needed for a workaround in the vrx200 Ethernet driver. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Acked-by: Paul Burton <paul.burton@mips.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/mips/lantiq')
-rw-r--r--arch/mips/lantiq/xway/dma.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/mips/lantiq/xway/dma.c b/arch/mips/lantiq/xway/dma.c
index 664f2f7f55c1..982859f2b2a3 100644
--- a/arch/mips/lantiq/xway/dma.c
+++ b/arch/mips/lantiq/xway/dma.c
@@ -106,7 +106,6 @@ ltq_dma_open(struct ltq_dma_channel *ch)
spin_lock_irqsave(&ltq_dma_lock, flag);
ltq_dma_w32(ch->nr, LTQ_DMA_CS);
ltq_dma_w32_mask(0, DMA_CHAN_ON, LTQ_DMA_CCTRL);
- ltq_dma_w32_mask(0, 1 << ch->nr, LTQ_DMA_IRNEN);
spin_unlock_irqrestore(&ltq_dma_lock, flag);
}
EXPORT_SYMBOL_GPL(ltq_dma_open);