tests: subsys: settings: Increase stack size

Fixes #62324

Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>

include/zephyr/storage/stream_flash.h

@@ -108,9 +108,11 @@ size_t stream_flash_bytes_written(struct stream_flash_ctx *ctx);
  * @param data data to write
  * @param len Number of bytes to write
  * @param flush when true this forces any buffered data to be written to flash
- *        A flush write should be the last write operation in a sequence of
- *        write operations for given context (although this is not mandatory
- *        if the total data size is a multiple of the buffer size).
+ *        A write with the @p flush set to true has to be issued as the last
+ *        write request for a given context, as it concludes write of a stream;
+ *        there must not be issued any more write requests for given context,
+ *        unless it is re-initialized, and such write attempts may result in the
+ *        function returning error.
  *
  * @return non-negative on success, negative errno code on fail
  */

tests/subsys/settings/fcb_init/prj.conf

@@ -4,6 +4,7 @@ CONFIG_FLASH_PAGE_LAYOUT=y
 CONFIG_FLASH_MAP=y
 CONFIG_FCB=y
 
+CONFIG_MAIN_STACK_SIZE=4096
 CONFIG_SETTINGS=y
 CONFIG_SETTINGS_RUNTIME=y
 CONFIG_SETTINGS_FCB=y