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| author | Hans de Goede <hdegoede@redhat.com> | 2013-10-04 00:29:46 +0200 |
|---|---|---|
| committer | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2014-03-04 15:38:01 -0800 |
| commit | ee4aa54bce2ae27c36998da3d32d9f55cb48ca21 (patch) | |
| tree | 40dbe2943ab92a3c2175b554c47237d7fb6e5a6f /drivers/usb/host/xhci-mem.c | |
| parent | df6138347bcde316e4d4b24ae4d9d0296461c79a (diff) | |
| download | op-kernel-dev-ee4aa54bce2ae27c36998da3d32d9f55cb48ca21.zip op-kernel-dev-ee4aa54bce2ae27c36998da3d32d9f55cb48ca21.tar.gz | |
xhci: Check size rather then number of streams when allocating stream ctxs
Before this a device needing ie 32 stream ctxs would end up with an entry from
the small_streams_pool which has 256 bytes entries, where as 32 stream ctxs
need 512 bytes. Things actually keep running for a surprisingly long time
before crashing because of this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Diffstat (limited to 'drivers/usb/host/xhci-mem.c')
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 39f9a99..be7b7b6 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -520,12 +520,12 @@ static void xhci_free_stream_ctx(struct xhci_hcd *xhci, struct xhci_stream_ctx *stream_ctx, dma_addr_t dma) { struct device *dev = xhci_to_hcd(xhci)->self.controller; + size_t size = sizeof(struct xhci_stream_ctx) * num_stream_ctxs; - if (num_stream_ctxs > MEDIUM_STREAM_ARRAY_SIZE) - dma_free_coherent(dev, - sizeof(struct xhci_stream_ctx)*num_stream_ctxs, + if (size > MEDIUM_STREAM_ARRAY_SIZE) + dma_free_coherent(dev, size, stream_ctx, dma); - else if (num_stream_ctxs <= SMALL_STREAM_ARRAY_SIZE) + else if (size <= SMALL_STREAM_ARRAY_SIZE) return dma_pool_free(xhci->small_streams_pool, stream_ctx, dma); else @@ -548,12 +548,12 @@ static struct xhci_stream_ctx *xhci_alloc_stream_ctx(struct xhci_hcd *xhci, gfp_t mem_flags) { struct device *dev = xhci_to_hcd(xhci)->self.controller; + size_t size = sizeof(struct xhci_stream_ctx) * num_stream_ctxs; - if (num_stream_ctxs > MEDIUM_STREAM_ARRAY_SIZE) - return dma_alloc_coherent(dev, - sizeof(struct xhci_stream_ctx)*num_stream_ctxs, + if (size > MEDIUM_STREAM_ARRAY_SIZE) + return dma_alloc_coherent(dev, size, dma, mem_flags); - else if (num_stream_ctxs <= SMALL_STREAM_ARRAY_SIZE) + else if (size <= SMALL_STREAM_ARRAY_SIZE) return dma_pool_alloc(xhci->small_streams_pool, mem_flags, dma); else |
