acpi_video(4): Fix detach panic.

[dragonfly.git] / sys / kern / kern_xio.c

diff --git a/sys/kern/kern_xio.c b/sys/kern/kern_xio.c
index 64416d5..6697006 100644 (file)
--- a/sys/kern/kern_xio.c
+++ b/sys/kern/kern_xio.c
@@ -177,8 +177,6 @@ xio_init_kbuf(xio_t xio, void *kbase, size_t kbytes)
     xio->xio_error = 0;
     if ((n = PAGE_SIZE - xio->xio_offset) > kbytes)
        n = kbytes;
-    lwkt_gettoken(&vm_token);
-    crit_enter();
     for (i = 0; n && i < XIO_INTERNAL_PAGES; ++i) {
        if ((paddr = pmap_kextract(addr)) == 0)
            break;
@@ -191,8 +189,6 @@ xio_init_kbuf(xio_t xio, void *kbase, size_t kbytes)
            n = PAGE_SIZE;
        addr += PAGE_SIZE;
     }
-    crit_exit();
-    lwkt_reltoken(&vm_token);
     xio->xio_npages = i;
 
     /*
@@ -223,14 +219,10 @@ xio_init_pages(xio_t xio, struct vm_page **mbase, int npages, int xflags)
     xio->xio_pages = xio->xio_internal_pages;
     xio->xio_npages = npages;
     xio->xio_error = 0;
-    lwkt_gettoken(&vm_token);
-    crit_enter();
     for (i = 0; i < npages; ++i) {
        vm_page_hold(mbase[i]);
        xio->xio_pages[i] = mbase[i];
     }
-    crit_exit();
-    lwkt_reltoken(&vm_token);
     return(0);
 }
 
@@ -244,16 +236,12 @@ xio_release(xio_t xio)
     int i;
     vm_page_t m;
 
-    lwkt_gettoken(&vm_token);
-    crit_enter();
     for (i = 0; i < xio->xio_npages; ++i) {
        m = xio->xio_pages[i];
        if (xio->xio_flags & XIOF_WRITE)
                vm_page_dirty(m);
        vm_page_unhold(m);
     }
-    crit_exit();
-    lwkt_reltoken(&vm_token);
     xio->xio_offset = 0;
     xio->xio_npages = 0;
     xio->xio_bytes = 0;