USB: whci-hcd: support urbs with scatter-gather lists

Support urbs with scatter-gather lists by trying to fit sg list elements
into page lists in one or more qTDs.  qTDs must end on a wMaxPacketSize
boundary so if this isn't possible the urb's sg list must be copied into
bounce buffers.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/usb/host/whci/whci-hc.h b/drivers/usb/host/whci/whci-hc.h
index e8d0001605be..d5e5c3aacced 100644
--- a/drivers/usb/host/whci/whci-hc.h
+++ b/drivers/usb/host/whci/whci-hc.h
@@ -267,8 +267,9 @@ struct whc_qset {
         unsigned reset:1;
         struct urb *pause_after_urb;
         struct completion remove_complete;
-        int max_burst;
-        int max_seq;
+        uint16_t max_packet;
+        uint8_t max_burst;
+        uint8_t max_seq;
 };
 
 static inline void whc_qset_set_link_ptr(u64 *ptr, u64 target)