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authorAndiry Xu <andiry.xu@amd.com>2011-09-02 11:05:57 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2011-09-09 15:52:54 -0700
commit2ffdea25f054439c31c24b248faa647685280571 (patch)
treee15603e52db3cd197642fccc115bc58abb4185bb /drivers/usb/host/xhci-mem.c
parentfd984d242afbe13bd94c60b6754feda93be69bd7 (diff)
xHCI: refine td allocation
In xhci_urb_enqueue(), allocate a block of memory for all the TDs instead of allocating memory for each of them separately. This reduces the number of kzalloc calling when an isochronous usb is submitted. Signed-off-by: Andiry Xu <andiry.xu@amd.com> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/xhci-mem.c')
-rw-r--r--drivers/usb/host/xhci-mem.c14
1 files changed, 3 insertions, 11 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 1c5c9ba141db..c4b8959e01e7 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1666,18 +1666,10 @@ struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci,
void xhci_urb_free_priv(struct xhci_hcd *xhci, struct urb_priv *urb_priv)
{
- int last;
-
- if (!urb_priv)
- return;
-
- last = urb_priv->length - 1;
- if (last >= 0) {
- int i;
- for (i = 0; i <= last; i++)
- kfree(urb_priv->td[i]);
+ if (urb_priv) {
+ kfree(urb_priv->td[0]);
+ kfree(urb_priv);
}
- kfree(urb_priv);
}
void xhci_free_command(struct xhci_hcd *xhci,