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Commit 70774b47 authored by Chris Leech's avatar Chris Leech Committed by Dan Williams
Browse files

ioatdma: Remove the use of writeq from the ioatdma driver 


There's only one now anyway, and it's not in a performance path,
so make it behave the same on 32-bit and 64-bit CPUs.

Signed-off-by: default avatarChris Leech <christopher.leech@intel.com>
parent e3828811

drivers/dma/ioatdma.c

+4 −6
Original line number Diff line number Diff line
@@ -608,13 +608,11 @@ static void ioat_start_null_desc(struct ioat_dma_chan *ioat_chan) 
	list_add_tail(&desc->node, &ioat_chan->used_desc);

	spin_unlock_bh(&ioat_chan->desc_lock);



#if (BITS_PER_LONG == 64)

	writeq(desc->phys, ioat_chan->reg_base + IOAT_CHAINADDR_OFFSET);

#else

	writel((u32) desc->phys,

	writel(((u64) desc->phys) & 0x00000000FFFFFFFF,

	       ioat_chan->reg_base + IOAT_CHAINADDR_OFFSET_LOW);

	writel(0, ioat_chan->reg_base + IOAT_CHAINADDR_OFFSET_HIGH);

#endif

	writel(((u64) desc->phys) >> 32,

	       ioat_chan->reg_base + IOAT_CHAINADDR_OFFSET_HIGH);



	writeb(IOAT_CHANCMD_START, ioat_chan->reg_base + IOAT_CHANCMD_OFFSET);

}