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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 <realmz6@gmail.com>
This commit is contained in:
Steven Miao 2014-05-13 16:49:13 +08:00
parent bc4fef6f32
commit ff5ae12d84
1 changed files with 2 additions and 0 deletions
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2
arch/blackfin/include/asm/dma.h
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@ -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);