usbmon: restore mmap

Paolo asked to enable the mmap. I kept it off because I'm do not
entirely understand how it workse these days after ->nopage etc.
But it seems like working somewhat at least.

Signed-Off-By: Pete Zaitcev <zaitcev@gmail.com>
Cc: Paolo Abeni <paolo.abeni@email.it>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 4 insertions, 8 deletions

diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c
index 1774ba5c4c3b..49145534e06e 100644
--- a/drivers/usb/mon/mon_bin.c
+++ b/drivers/usb/mon/mon_bin.c
@@ -1026,8 +1026,6 @@ mon_bin_poll(struct file *file, struct poll_table_struct *wait)
         return mask;
 }
 
-#if 0
-
 /*
  * open and close: just keep track of how many times the device is
  * mapped, to use the proper memory allocation function.
@@ -1063,13 +1061,13 @@ static int mon_bin_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
         return 0;
 }
 
-struct vm_operations_struct mon_bin_vm_ops = {
+static struct vm_operations_struct mon_bin_vm_ops = {
         .open =     mon_bin_vma_open,
         .close =    mon_bin_vma_close,
         .fault =    mon_bin_vma_fault,
 };
 
-int mon_bin_mmap(struct file *filp, struct vm_area_struct *vma)
+static int mon_bin_mmap(struct file *filp, struct vm_area_struct *vma)
 {
         /* don't do anything here: "fault" will set up page table entries */
         vma->vm_ops = &mon_bin_vm_ops;
@@ -1079,8 +1077,6 @@ int mon_bin_mmap(struct file *filp, struct vm_area_struct *vma)
         return 0;
 }
 
-#endif  /*  0  */
-
 static const struct file_operations mon_fops_binary = {
         .owner =        THIS_MODULE,
         .open =         mon_bin_open,
@@ -1090,6 +1086,7 @@ static const struct file_operations mon_fops_binary = {
         .poll =         mon_bin_poll,
         .ioctl =        mon_bin_ioctl,
         .release =      mon_bin_release,
+        .mmap =         mon_bin_mmap,
 };
 
 static int mon_bin_wait_event(struct file *file, struct mon_reader_bin *rp)
diff --git a/drivers/usb/mon/mon_main.c b/drivers/usb/mon/mon_main.c
index b371ffd39d36..442d8076b201 100644
--- a/drivers/usb/mon/mon_main.c
+++ b/drivers/usb/mon/mon_main.c
@@ -129,8 +129,7 @@ static void mon_submit_error(struct usb_bus *ubus, struct urb *urb, int error)
 
 /*
  */
-static void mon_bus_complete(struct mon_bus *mbus, struct urb *urb,
-                int status)
+static void mon_bus_complete(struct mon_bus *mbus, struct urb *urb, int status)
 {
         unsigned long flags;
         struct list_head *pos;