Altix only: Fix for sn_dma_flush

PATCH New Mike Habeck 1 participant 1 message Mar 25, 2005

lore

Share & tools

lore

Mike Habeck

author

2005-03-25 19:34 UTC #0 lore raw

cover Altix only: Fix for sn_dma_flush

Tony,

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 <[email protected]>

arch/ia64/sn/pci/pcibr/pcibr_dma.c +1 -1

Index: test-2.6.12/arch/ia64/sn/pci/pcibr/pcibr_dma.c
===================================================================
@@ -301,7 +301,7 @@
 		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;