Staging: ced1401: usb1401: fix build errors.

This fixes up the usb1401.c file to remove the usage of err() (which is
gone), and the two-argument kmap_atomic() call, and the compat_ioctl
pointer warning.

The code now builds properly, there are lots of warnings still, but it's
a start.

Cc: Alois Schlögl <alois.schloegl@ist.ac.at>
Cc: Greg P. Smith <greg@ced.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ced1401/usb1401.c

@@ -171,7 +171,7 @@ static int ced_open(struct inode *inode, struct file *file)
     struct usb_interface* interface = usb_find_interface(&ced_driver, subminor);
     if (!interface)
     {
-        err("%s - error, can't find device for minor %d", __func__, subminor);
+        pr_err("%s - error, can't find device for minor %d", __func__, subminor);
         retval = -ENODEV;
         goto exit;
     }
@@ -491,7 +491,7 @@ static void CopyUserSpace(DEVICE_EXTENSION *pdx, int n)
             int nPage = dwOffset >> PAGE_SHIFT;    // page number in table
             if (nPage < pArea->nPages)
             {
-                char *pvAddress = (char*)kmap_atomic(pArea->pPages[nPage], KM_IRQ0);
+                char *pvAddress = (char*)kmap_atomic(pArea->pPages[nPage]);
                 if (pvAddress)
                 {
                     unsigned int uiPageOff = dwOffset & (PAGE_SIZE-1);   // offset into the page
@@ -502,7 +502,7 @@ static void CopyUserSpace(DEVICE_EXTENSION *pdx, int n)
                         memcpy(pvAddress+uiPageOff, pCoherBuf, uiXfer);
                     else
                         memcpy(pCoherBuf, pvAddress+uiPageOff, uiXfer);
-                    kunmap_atomic(pvAddress, KM_IRQ0);
+                    kunmap_atomic(pvAddress);
                     dwOffset += uiXfer;
                     pCoherBuf += uiXfer;
                     n -= uiXfer;
@@ -1198,7 +1198,7 @@ int Allowi(DEVICE_EXTENSION* pdx, bool bInCallback)
 **          enough for a 64-bit pointer.
 *****************************************************************************/
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)
-static int ced_ioctl(struct file * file, unsigned int cmd, unsigned long ulArg)
+static long ced_ioctl(struct file * file, unsigned int cmd, unsigned long ulArg)
 #else
 static int ced_ioctl(struct inode * node, struct file * file, unsigned int cmd, unsigned long ulArg)
 #endif
@@ -1367,7 +1367,7 @@ static int ced_probe(struct usb_interface *interface, const struct usb_device_id
     pdx = kzalloc(sizeof(*pdx), GFP_KERNEL);
     if (!pdx)
     {
-        err("Out of memory");
+        dev_err(&interface->dev, "Out of memory\n");
         goto error;
     }
 
@@ -1458,7 +1458,7 @@ static int ced_probe(struct usb_interface *interface, const struct usb_device_id
     if (retval)
     {
         /* something prevented us from registering this driver */
-        err("Not able to get a minor for this device.");
+        dev_err(&interface->dev, "Not able to get a minor for this device.\n");
         usb_set_intfdata(interface, NULL);
         goto error;
     }
@@ -1578,11 +1578,7 @@ static struct usb_driver ced_driver =
 static int __init usb_skel_init(void)
 {
     /* register this driver with the USB subsystem */
-    int result = usb_register(&ced_driver);
-    if (result)
-        err("usb_register failed. Error number %d", result);
-
-    return result;
+    return usb_register(&ced_driver);
 }
 
 static void __exit usb_skel_exit(void)