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-rw-r--r--include/linux/iio/consumer.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h
index a38b277c2c02..5039558267e4 100644
--- a/include/linux/iio/consumer.h
+++ b/include/linux/iio/consumer.h
@@ -131,7 +131,8 @@ struct iio_cb_buffer;
/**
* iio_channel_get_all_cb() - register callback for triggered capture
* @dev: Pointer to client device.
- * @cb: Callback function.
+ * @cb: Callback function. Must be safe to call from any context
+ * (e.g. must not sleep).
* @private: Private data passed to callback.
*
* NB right now we have no ability to mux data from multiple devices.