[Bluetooth] Disconnect HID interrupt channel first

[pandora-kernel.git] / kernel / ptrace.c

diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 9a111f7..4d50e06 100644 (file)
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -241,60 +241,6 @@ int ptrace_detach(struct task_struct *child, unsigned int data)
        return 0;
 }
 
-/*
- * Access another process' address space.
- * Source/target buffer must be kernel space, 
- * Do not walk the page table directly, use get_user_pages
- */
-
-int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write)
-{
-       struct mm_struct *mm;
-       struct vm_area_struct *vma;
-       struct page *page;
-       void *old_buf = buf;
-
-       mm = get_task_mm(tsk);
-       if (!mm)
-               return 0;
-
-       down_read(&mm->mmap_sem);
-       /* ignore errors, just check how much was sucessfully transfered */
-       while (len) {
-               int bytes, ret, offset;
-               void *maddr;
-
-               ret = get_user_pages(tsk, mm, addr, 1,
-                               write, 1, &page, &vma);
-               if (ret <= 0)
-                       break;
-
-               bytes = len;
-               offset = addr & (PAGE_SIZE-1);
-               if (bytes > PAGE_SIZE-offset)
-                       bytes = PAGE_SIZE-offset;
-
-               maddr = kmap(page);
-               if (write) {
-                       copy_to_user_page(vma, page, addr,
-                                         maddr + offset, buf, bytes);
-                       set_page_dirty_lock(page);
-               } else {
-                       copy_from_user_page(vma, page, addr,
-                                           buf, maddr + offset, bytes);
-               }
-               kunmap(page);
-               page_cache_release(page);
-               len -= bytes;
-               buf += bytes;
-               addr += bytes;
-       }
-       up_read(&mm->mmap_sem);
-       mmput(mm);
-       
-       return buf - old_buf;
-}
-
 int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __user *dst, int len)
 {
        int copied = 0;
@@ -494,6 +440,7 @@ struct task_struct *ptrace_get_task_struct(pid_t pid)
        child = find_task_by_pid(pid);
        if (child)
                get_task_struct(child);
+
        read_unlock(&tasklist_lock);
        if (!child)
                return ERR_PTR(-ESRCH);