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Merge tag 'dmaengine-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine

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Pull dmaengine fixes from Dan Williams:

1/ regression fix for Xen as it now trips over a broken assumption
   about the dma address size on 32-bit builds

2/ new quirk for netdma to ignore dma channels that cannot meet
   netdma alignment requirements

3/ fixes for two long standing issues in ioatdma (ring size overflow)
   and iop-adma (potential stack corruption)

* tag 'dmaengine-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine:
  netdma: adding alignment check for NETDMA ops
  ioatdma: DMA copy alignment needed to address IOAT DMA silicon errata
  ioat: ring size variables need to be 32bit to avoid overflow
  iop-adma: Corrected array overflow in RAID6 Xscale(R) test.
  ioat: fix size of 'completion' for Xen
This commit is contained in:
Linus Torvalds
2012-04-10 15:30:16 -07:00
parent a9e1e53bcf a2bd1140a2
commit 94fb175c04
12 changed files with 86 additions and 30 deletions
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16
drivers/dma/ioat/dma.c
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@@ -546,9 +546,9 @@ void ioat_dma_unmap(struct ioat_chan_common *chan, enum dma_ctrl_flags flags,
PCI_DMA_TODEVICE, flags, 0);
}
unsigned long ioat_get_current_completion(struct ioat_chan_common *chan)
dma_addr_t ioat_get_current_completion(struct ioat_chan_common *chan)
{
unsigned long phys_complete;
dma_addr_t phys_complete;
u64 completion;
completion = *chan->completion;
@@ -569,7 +569,7 @@ unsigned long ioat_get_current_completion(struct ioat_chan_common *chan)
}
bool ioat_cleanup_preamble(struct ioat_chan_common *chan,
unsigned long *phys_complete)
dma_addr_t *phys_complete)
{
*phys_complete = ioat_get_current_completion(chan);
if (*phys_complete == chan->last_completion)
@@ -580,14 +580,14 @@ bool ioat_cleanup_preamble(struct ioat_chan_common *chan,
return true;
}
static void __cleanup(struct ioat_dma_chan *ioat, unsigned long phys_complete)
static void __cleanup(struct ioat_dma_chan *ioat, dma_addr_t phys_complete)
{
struct ioat_chan_common *chan = &ioat->base;
struct list_head *_desc, *n;
struct dma_async_tx_descriptor *tx;
dev_dbg(to_dev(chan), "%s: phys_complete: %lx\n",
__func__, phys_complete);
dev_dbg(to_dev(chan), "%s: phys_complete: %llx\n",
__func__, (unsigned long long) phys_complete);
list_for_each_safe(_desc, n, &ioat->used_desc) {
struct ioat_desc_sw *desc;
@@ -652,7 +652,7 @@ static void __cleanup(struct ioat_dma_chan *ioat, unsigned long phys_complete)
static void ioat1_cleanup(struct ioat_dma_chan *ioat)
{
struct ioat_chan_common *chan = &ioat->base;
unsigned long phys_complete;
dma_addr_t phys_complete;
prefetch(chan->completion);
@@ -698,7 +698,7 @@ static void ioat1_timer_event(unsigned long data)
mod_timer(&chan->timer, jiffies + COMPLETION_TIMEOUT);
spin_unlock_bh(&ioat->desc_lock);
} else if (test_bit(IOAT_COMPLETION_PENDING, &chan->state)) {
unsigned long phys_complete;
dma_addr_t phys_complete;
spin_lock_bh(&ioat->desc_lock);
/* if we haven't made progress and we have already