From ff5ae12d84d3f7eaeb3850ff6de4289c0c849344 Mon Sep 17 00:00:00 2001 From: Steven Miao Date: Tue, 13 May 2014 16:49:13 +0800 Subject: [PATCH] Revert "blackfin: dma: current count mmr is read only" curr_x_count/curr_y_count need to be cleared here, keep this workaround This reverts commit dfb02f95f5430e47d0c49adbc4469d08eea38b94. Signed-off-by: Steven Miao --- arch/blackfin/include/asm/dma.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/blackfin/include/asm/dma.h b/arch/blackfin/include/asm/dma.h index 8d1e4c2d2c36..40e9c2bbc6e3 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); -- 2.20.1