tests: lib: filter out SSP timeouts

In legacy SSP driver, DMA request request is enabled
during FIFO drain, causing DMA keeps filling FIFO
and preventing empty, which leads to timeout.
ERROR is logged by poll_for_register_delay()
while ssp_empty_tx_fifo() returns WARN,
so there is inconsistent error handling between
this two functions.

Issue#4369 describe issue on older firmware version.

Signed-off-by: Mateusz Junkier <mateusz.junkier@intel.com>

Author: majunkier

case-lib/lib.sh

@@ -547,10 +547,16 @@ check_error_in_fw_logfile()
         dloge "file NOT FOUND: '$1'"
         return 1
     }
+    # Filter out SSP timeout errors and check for remaining errors
+    SSP_timeout_msgs=(
+        -e 'poll timeout reg .* mask .* val .* us .*'
+        -e 'ssp_empty_tx_fifo() warning: timeout'
+    )
     # -B 2 shows the header line when the first etrace message is an ERROR
     # -A 1 shows whether the ERROR is last or not.
     if (set -x
-        grep -B 2 -A 1 -i --word-regexp -e 'ERR' -e 'ERROR' -e '<err>' -e OSError "$1"
+        grep -v "${SSP_timeout_msgs[@]}" "$1" | \
+            grep -B 2 -A 1 -i --word-regexp -e 'ERR' -e 'ERROR' -e '<err>' -e OSError
        ); then
         # See internal Intel bug #448
         dlogw 'An HTML display bug hides the bracketed Zephyr &lt;loglevels&gt; in this tab,'