Commit de7548d0 authored Mar 25, 2005 by Mike Habeck Committed by Tony Luck May 03, 2005

[IA64-SGI] Altix only: Fix for sn_dma_flush



The following patch fixes a bug in the SGI Altix sn_dma_flush code.  
sn_dma_flush is broken in 2.6.  The code isn't waiting for the DMA 
data to be flushed out of the PIC ASIC. This patch is based off the 
linux-ia64-test-2.6.12 tree

Signed-off-by: Mike Habeck <habeck@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

parent bb0fc085

arch/ia64/sn/pci/pcibr/pcibr_dma.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -301,7 +301,7 @@ void sn_dma_flush(uint64_t addr)
		spin_lock_irqsave(&((struct sn_flush_device_list *)p)->
		sfdl_flush_lock, flags);

		p->sfdl_flush_value = 0;
		*p->sfdl_flush_addr = 0;

		/* force an interrupt. */
		(volatile uint32_t )(p->sfdl_force_int_addr) = 1;