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authorStephen Warren <swarren@nvidia.com>2014-02-06 13:13:06 -0700
committerMarek Vasut <marex@denx.de>2014-03-10 18:53:36 +0100
commit8165e34bf4f1b663ca37f7ead4bb029b4d9da74e (patch)
tree645ab73d4a6fbdd83608dd8876f1c7cf9cefbbe0 /drivers/usb
parent2456b97f0c9411d0bc2637ba1033a910c8b4b971 (diff)
usb: ehci: fully align interrupt QHs/QTDs
These data structures are passed to cache-flushing routines, and hence must be conform to both the USB the cache-flusing alignment requirements. That means aligning to USB_DMA_MINALIGN. This is important on systems where cache lines are >32 bytes. Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/host/ehci-hcd.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 7068b762d8..6017090ebe 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1162,14 +1162,16 @@ create_int_queue(struct usb_device *dev, unsigned long pipe, int queuesize,
debug("ehci intr queue: out of memory\n");
goto fail1;
}
- result->first = memalign(32, sizeof(struct QH) * queuesize);
+ result->first = memalign(USB_DMA_MINALIGN,
+ sizeof(struct QH) * queuesize);
if (!result->first) {
debug("ehci intr queue: out of memory\n");
goto fail2;
}
result->current = result->first;
result->last = result->first + queuesize - 1;
- result->tds = memalign(32, sizeof(struct qTD) * queuesize);
+ result->tds = memalign(USB_DMA_MINALIGN,
+ sizeof(struct qTD) * queuesize);
if (!result->tds) {
debug("ehci intr queue: out of memory\n");
goto fail3;