From: Steven Miao <realmz6@gmail.com>
Date: Tue, 13 May 2014 08:49:13 +0000 (+0800)
Subject: Revert "blackfin: dma: current count mmr is read only"
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=ff5ae12d84d3f7eaeb3850ff6de4289c0c849344;p=deliverable%2Flinux.git

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>
---

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);