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-rw-r--r--cpukit/sapi/include/rtems/io.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/cpukit/sapi/include/rtems/io.h b/cpukit/sapi/include/rtems/io.h
index ba867c46f3..bf0057e5e6 100644
--- a/cpukit/sapi/include/rtems/io.h
+++ b/cpukit/sapi/include/rtems/io.h
@@ -92,6 +92,7 @@ rtems_status_code rtems_io_driver_io_error(
* @retval RTEMS_INVALID_NUMBER Invalid major number.
* @retval RTEMS_TOO_MANY No major number available.
* @retval RTEMS_RESOURCE_IN_USE Major number in use.
+ * @retval RTEMS_CALLED_FROM_ISR Called from interrupt context.
* @retval * Status code depends on rtems_io_initialize().
*/
rtems_status_code rtems_io_register_driver(
@@ -105,6 +106,7 @@ rtems_status_code rtems_io_register_driver(
*
* @retval RTEMS_SUCCESSFUL Device driver successfully unregistered.
* @retval RTEMS_UNSATISFIED Invalid major number.
+ * @retval RTEMS_CALLED_FROM_ISR Called from interrupt context.
*/
rtems_status_code rtems_io_unregister_driver(
rtems_device_major_number major