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authorDavid S. Miller <davem@davemloft.net>2005-05-31 16:57:59 -0700
committerDavid S. Miller <davem@davemloft.net>2005-05-31 16:57:59 -0700
commit7c963ad1d113790a8c723a178988b675868f3abe (patch)
tree2e1cc54795aeca06a11801636737901ba71a2ed8 /arch/sparc64/kernel/pci_psycho.c
parent2e3e80c2b75e3815a0160cbd23d4fdb767d66b35 (diff)
[SPARC64]: Fix streaming buffer flushing on PCI and SBUS.
Firstly, if the direction is TODEVICE, then dirty data in the streaming cache is impossible so we can elide the flush-flag synchronization in that case. Next, the context allocator is broken. It is highly likely that contexts get used multiple times for different dma mappings, which confuses the strbuf flushing code and makes it run inefficiently. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/pci_psycho.c')
-rw-r--r--arch/sparc64/kernel/pci_psycho.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc64/kernel/pci_psycho.c b/arch/sparc64/kernel/pci_psycho.c
index 3567fa879e1..534320ef0db 100644
--- a/arch/sparc64/kernel/pci_psycho.c
+++ b/arch/sparc64/kernel/pci_psycho.c
@@ -1212,7 +1212,7 @@ static void __init psycho_iommu_init(struct pci_controller_info *p)
/* Setup initial software IOMMU state. */
spin_lock_init(&iommu->lock);
- iommu->iommu_cur_ctx = 0;
+ iommu->ctx_lowest_free = 1;
/* Register addresses. */
iommu->iommu_control = p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL;