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>
diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c
index 1774ba5..4914553 100644
--- a/drivers/usb/mon/mon_bin.c
+++ b/drivers/usb/mon/mon_bin.c
@@ -1026,8 +1026,6 @@
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 @@
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 @@
return 0;
}
-#endif /* 0 */
-
static const struct file_operations mon_fops_binary = {
.owner = THIS_MODULE,
.open = mon_bin_open,
@@ -1090,6 +1086,7 @@
.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)