Staging: iio: industrialio-ring.c: fix up sparse warnings

Cc: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/iio/industrialio-ring.c b/drivers/staging/iio/industrialio-ring.c
index fc27d22a7ab104c21f7affa84a2aebc8147e8dfa..ada159bbb1f703a5df0e9aad54f00834890fa636 100644 (file)
--- a/drivers/staging/iio/industrialio-ring.c
+++ b/drivers/staging/iio/industrialio-ring.c
@@ -58,7 +58,7 @@ EXPORT_SYMBOL(iio_push_or_escallate_ring_event);
  * This function relies on all ring buffer implementations having an
  * iio_ring_buffer as their first element.
  **/
-int iio_ring_open(struct inode *inode, struct file *filp)
+static int iio_ring_open(struct inode *inode, struct file *filp)
 {
        struct iio_handler *hand
                = container_of(inode->i_cdev, struct iio_handler, chrdev);
@@ -77,7 +77,7 @@ int iio_ring_open(struct inode *inode, struct file *filp)
  * This function relies on all ring buffer implementations having an
  * iio_ring_buffer as their first element.
  **/
-int iio_ring_release(struct inode *inode, struct file *filp)
+static int iio_ring_release(struct inode *inode, struct file *filp)
 {
        struct cdev *cd = inode->i_cdev;
        struct iio_handler *hand = iio_cdev_to_handler(cd);
@@ -96,10 +96,8 @@ int iio_ring_release(struct inode *inode, struct file *filp)
  * This function relies on all ring buffer implementations having an
  * iio_ring _bufer as their first element.
  **/
-ssize_t iio_ring_rip_outer(struct file *filp,
-                          char *buf,
-                          size_t count,
-                          loff_t *f_ps)
+static ssize_t iio_ring_rip_outer(struct file *filp, char __user *buf,
+                                 size_t count, loff_t *f_ps)
 {
        struct iio_ring_buffer *rb = filp->private_data;
        int ret, dead_offset, copied;
@@ -251,7 +249,7 @@ void iio_ring_buffer_init(struct iio_ring_buffer *ring,
        ring->indio_dev = dev_info;
        ring->ev_int.private = ring;
        ring->access_handler.private = ring;
-       ring->shared_ev_pointer.ev_p = 0;
+       ring->shared_ev_pointer.ev_p = NULL;
        spin_lock_init(&ring->shared_ev_pointer.lock);
 }
 EXPORT_SYMBOL(iio_ring_buffer_init);