arch/um/kernel/irq.c: clean up some functions

Make activate_fd() and free_irq_by_irq_and_dev() static.  Remove
init_aio_irq() since it has no users.

Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: WANG Cong <wangcong@zeuux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 2 insertions, 37 deletions

diff --git a/arch/um/include/irq_kern.h b/arch/um/include/irq_kern.h
index 4f775597fd5f..fba3895274f9 100644
--- a/arch/um/include/irq_kern.h
+++ b/arch/um/include/irq_kern.h
@@ -13,8 +13,6 @@ extern int um_request_irq(unsigned int irq, int fd, int type,
                           irq_handler_t handler,
                           unsigned long irqflags,  const char * devname,
                           void *dev_id);
-extern int init_aio_irq(int irq, char *name,
-                        irq_handler_t handler);
 
 #endif
 
diff --git a/arch/um/include/irq_user.h b/arch/um/include/irq_user.h
index e60b31873de1..c6c784df2673 100644
--- a/arch/um/include/irq_user.h
+++ b/arch/um/include/irq_user.h
@@ -21,8 +21,6 @@ struct irq_fd {
 enum { IRQ_READ, IRQ_WRITE };
 
 extern void sigio_handler(int sig, struct uml_pt_regs *regs);
-extern int activate_fd(int irq, int fd, int type, void *dev_id);
-extern void free_irq_by_irq_and_dev(unsigned int irq, void *dev_id);
 extern void free_irq_by_fd(int fd);
 extern void reactivate_fd(int fd, int irqnum);
 extern void deactivate_fd(int fd, int irqnum);
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index 91587f8db340..3d7aad09b171 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -102,7 +102,7 @@ void sigio_handler(int sig, struct uml_pt_regs *regs)
 
 static DEFINE_SPINLOCK(irq_lock);
 
-int activate_fd(int irq, int fd, int type, void *dev_id)
+static int activate_fd(int irq, int fd, int type, void *dev_id)
 {
         struct pollfd *tmp_pfd;
         struct irq_fd *new_fd, *irq_fd;
@@ -216,7 +216,7 @@ static int same_irq_and_dev(struct irq_fd *irq, void *d)
         return ((irq->irq == data->irq) && (irq->id == data->dev));
 }
 
-void free_irq_by_irq_and_dev(unsigned int irq, void *dev)
+static void free_irq_by_irq_and_dev(unsigned int irq, void *dev)
 {
         struct irq_and_dev data = ((struct irq_and_dev) { .irq  = irq,
                                                           .dev  = dev });
@@ -403,37 +403,6 @@ void __init init_IRQ(void)
         }
 }
 
-int init_aio_irq(int irq, char *name, irq_handler_t handler)
-{
-        int fds[2], err;
-
-        err = os_pipe(fds, 1, 1);
-        if (err) {
-                printk(KERN_ERR "init_aio_irq - os_pipe failed, err = %d\n",
-                       -err);
-                goto out;
-        }
-
-        err = um_request_irq(irq, fds[0], IRQ_READ, handler,
-                             IRQF_DISABLED | IRQF_SAMPLE_RANDOM, name,
-                             (void *) (long) fds[0]);
-        if (err) {
-                printk(KERN_ERR "init_aio_irq - : um_request_irq failed, "
-                       "err = %d\n",
-                       err);
-                goto out_close;
-        }
-
-        err = fds[1];
-        goto out;
-
- out_close:
-        os_close_file(fds[0]);
-        os_close_file(fds[1]);
- out:
-        return err;
-}
-
 /*
  * IRQ stack entry and exit:
  *