Merge tag 'efi-urgent' into x86/urgent

 * Avoid WARN_ON() when mapping BGRT on Baytrail (EFI 32-bit).

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h
index 15607b45221a..519392763393 100644
--- a/include/linux/iio/buffer.h
+++ b/include/linux/iio/buffer.h
@@ -21,6 +21,8 @@ struct iio_buffer;
  * struct iio_buffer_access_funcs - access functions for buffers.
  * @store_to:           actually store stuff to the buffer
  * @read_first_n:       try to get a specified number of bytes (must exist)
+ * @data_available:     indicates whether data for reading from the buffer is
+ *                      available.
  * @request_update:     if a parameter change has been marked, update underlying
  *                      storage.
  * @get_bytes_per_datum:get current bytes per datum
@@ -43,6 +45,7 @@ struct iio_buffer_access_funcs {
         int (*read_first_n)(struct iio_buffer *buffer,
                             size_t n,
                             char __user *buf);
+        bool (*data_available)(struct iio_buffer *buffer);
 
         int (*request_update)(struct iio_buffer *buffer);