From d41e8009994f429ef7198a750c37fd9660366fab Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Wed, 7 Jan 2009 23:14:38 +0800 Subject: [PATCH] Blackfin arch: dma code: cannot simply OR the ndsize cannot simply OR the ndsize ... need to clear out the old value first Signed-off-by: Mike Frysinger Signed-off-by: Bryan Wu --- arch/blackfin/include/asm/dma.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/blackfin/include/asm/dma.h b/arch/blackfin/include/asm/dma.h index 264feb4eb175..f58ca64d729c 100644 --- a/arch/blackfin/include/asm/dma.h +++ b/arch/blackfin/include/asm/dma.h @@ -205,7 +205,9 @@ static inline unsigned long get_dma_curr_addr(unsigned int channel) static inline void set_dma_sg(unsigned int channel, struct dmasg *sg, int ndsize) { - dma_ch[channel].regs->cfg |= ((ndsize & 0x0F) << 8); + dma_ch[channel].regs->cfg = + (dma_ch[channel].regs->cfg & ~(0xf << 8)) | + ((ndsize & 0xf) << 8); dma_ch[channel].regs->next_desc_ptr = sg; } -- 2.39.5