[PATCH] USB: UHCI: change uhci_explen macro

[~andy/linux] / drivers / usb / host / uhci-hcd.h

diff --git a/drivers/usb/host/uhci-hcd.h b/drivers/usb/host/uhci-hcd.h
index e576db57a926f3b6152b59e60b6b3df152263f4b..e43282e4e806c2b56e625fdd354597355a01dc2b 100644 (file)
--- a/drivers/usb/host/uhci-hcd.h
+++ b/drivers/usb/host/uhci-hcd.h
@@ -71,8 +71,6 @@
 #define   USBLEGSUP_RWC                0x8f00  /* the R/WC bits */
 #define   USBLEGSUP_RO         0x5040  /* R/O and reserved bits */
 
-#define UHCI_NULL_DATA_SIZE    0x7FF   /* for UHCI controller TD */
-
 #define UHCI_PTR_BITS          cpu_to_le32(0x000F)
 #define UHCI_PTR_TERM          cpu_to_le32(0x0001)
 #define UHCI_PTR_QH            cpu_to_le32(0x0002)
@@ -168,9 +166,11 @@ static __le32 inline qh_element(struct uhci_qh *qh) {
 #define TD_TOKEN_EXPLEN_MASK   0x7FF           /* expected length, encoded as n - 1 */
 #define TD_TOKEN_PID_MASK      0xFF
 
-#define uhci_explen(len)       ((len) << TD_TOKEN_EXPLEN_SHIFT)
+#define uhci_explen(len)       ((((len) - 1) & TD_TOKEN_EXPLEN_MASK) << \
+                                       TD_TOKEN_EXPLEN_SHIFT)
 
-#define uhci_expected_length(token) ((((token) >> 21) + 1) & TD_TOKEN_EXPLEN_MASK)
+#define uhci_expected_length(token) ((((token) >> TD_TOKEN_EXPLEN_SHIFT) + \
+                                       1) & TD_TOKEN_EXPLEN_MASK)
 #define uhci_toggle(token)     (((token) >> TD_TOKEN_TOGGLE_SHIFT) & 1)
 #define uhci_endpoint(token)   (((token) >> 15) & 0xf)
 #define uhci_devaddr(token)    (((token) >> TD_TOKEN_DEVADDR_SHIFT) & 0x7f)