uml: miscellaneous code cleanups

Code tidying -
	the pid field of struct irq_fd isn't used, so it is removed
     	os_set_fd_async needed to read flags before changing them, it
doesn't need a pid passed in because it can call getpid itself, and a
block of unused code needed deleting
	os_get_exec_close was unused, so it is removed
	ptrace_child called _exit for historical reasons which are no
longer valid, so just calls exit instead

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 4 deletions

diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index ba11ccd6a8a3..91587f8db340 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -107,10 +107,9 @@ int activate_fd(int irq, int fd, int type, void *dev_id)
         struct pollfd *tmp_pfd;
         struct irq_fd *new_fd, *irq_fd;
         unsigned long flags;
-        int pid, events, err, n;
+        int events, err, n;
 
-        pid = os_getpid();
-        err = os_set_fd_async(fd, pid);
+        err = os_set_fd_async(fd);
         if (err < 0)
                 goto out;
 
@@ -127,7 +126,6 @@ int activate_fd(int irq, int fd, int type, void *dev_id)
                                      .fd                = fd,
                                      .type              = type,
                                      .irq               = irq,
-                                     .pid               = pid,
                                      .events            = events,
                                      .current_events    = 0 } );