1 files changed, 20 insertions, 5 deletions

diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c
index b899f1a59c26..cd07ea3f0c63 100644
--- a/drivers/usb/host/isp1760-hcd.c
+++ b/drivers/usb/host/isp1760-hcd.c
@@ -644,7 +644,7 @@ static void transform_add_int(struct isp1760_hcd *priv, struct isp1760_qh *qh,
 
         if (urb->dev->speed != USB_SPEED_HIGH) {
                 /* split */
-                ptd->dw5 = __constant_cpu_to_le32(0x1c);
+                ptd->dw5 = cpu_to_le32(0x1c);
 
                 if (qh->period >= 32)
                         period = qh->period / 2;
@@ -819,6 +819,13 @@ static void enqueue_an_ATL_packet(struct usb_hcd *hcd, struct isp1760_qh *qh,
         u32 atl_regs, payload;
         u32 buffstatus;
 
+        /*
+         * When this function is called from the interrupt handler to enqueue
+         * a follow-up packet, the SKIP register gets written and read back
+         * almost immediately. With ISP1761, this register requires a delay of
+         * 195ns between a write and subsequent read (see section 15.1.1.3).
+         */
+        ndelay(195);
         skip_map = isp1760_readl(hcd->regs + HC_ATL_PTD_SKIPMAP_REG);
 
         BUG_ON(!skip_map);
@@ -853,6 +860,13 @@ static void enqueue_an_INT_packet(struct usb_hcd *hcd, struct isp1760_qh *qh,
         u32 int_regs, payload;
         u32 buffstatus;
 
+        /*
+         * When this function is called from the interrupt handler to enqueue
+         * a follow-up packet, the SKIP register gets written and read back
+         * almost immediately. With ISP1761, this register requires a delay of
+         * 195ns between a write and subsequent read (see section 15.1.1.3).
+         */
+        ndelay(195);
         skip_map = isp1760_readl(hcd->regs + HC_INT_PTD_SKIPMAP_REG);
 
         BUG_ON(!skip_map);
@@ -1054,7 +1068,7 @@ static void do_atl_int(struct usb_hcd *usb_hcd)
                         priv_write_copy(priv, (u32 *)&ptd, usb_hcd->regs +
                                         atl_regs, sizeof(ptd));
 
-                        ptd.dw0 |= __constant_cpu_to_le32(PTD_VALID);
+                        ptd.dw0 |= cpu_to_le32(PTD_VALID);
                         priv_write_copy(priv, (u32 *)&ptd, usb_hcd->regs +
                                         atl_regs, sizeof(ptd));
 
@@ -2235,9 +2249,10 @@ void deinit_kmem_cache(void)
         kmem_cache_destroy(qh_cachep);
 }
 
-struct usb_hcd *isp1760_register(u64 res_start, u64 res_len, int irq,
-                u64 irqflags, struct device *dev, const char *busname,
-                unsigned int devflags)
+struct usb_hcd *isp1760_register(phys_addr_t res_start, resource_size_t res_len,
+                                 int irq, unsigned long irqflags,
+                                 struct device *dev, const char *busname,
+                                 unsigned int devflags)
 {
         struct usb_hcd *hcd;
         struct isp1760_hcd *priv;