Revert "blackfin: dma: current count mmr is read only"

ff5ae12d · Steven Miao <[email protected]> · 2014-05-13 16:49:13 +08:00

curr_x_count/curr_y_count need to be cleared here, keep this workaround

This reverts commit dfb02f95f5430e47d0c49adbc4469d08eea38b94.

Signed-off-by: Steven Miao <[email protected]>

Commit: ff5ae12d84d3f7eaeb3850ff6de4289c0c849344
Parents: bc4fef6f

Changes

1 files changed · +2 −0

File	Status	Add	Del	Content
arch/blackfin/include/asm/dma.h	modified	+2	−0	View file

arch/blackfin/include/asm/dma.h

View file

diff --git a/arch/blackfin/include/asm/dma.h b/arch/blackfin/include/asm/dma.h
index 8d1e4c2..40e9c2b 100644
--- a/arch/blackfin/include/asm/dma.h
+++ b/arch/blackfin/include/asm/dma.h
@@ -316,6 +316,8 @@ static inline void disable_dma(unsigned int channel)
 }
 static inline void enable_dma(unsigned int channel)
 {
+	dma_ch[channel].regs->curr_x_count = 0;
+	dma_ch[channel].regs->curr_y_count = 0;
 	dma_ch[channel].regs->cfg |= DMAEN;
 }
 int set_dma_callback(unsigned int channel, irq_handler_t callback, void *data);