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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/tools/testing/selftests/firmware/fw_userhelper.sh | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/tools/testing/selftests/firmware/fw_userhelper.sh')
-rwxr-xr-x | kernel/tools/testing/selftests/firmware/fw_userhelper.sh | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/kernel/tools/testing/selftests/firmware/fw_userhelper.sh b/kernel/tools/testing/selftests/firmware/fw_userhelper.sh new file mode 100755 index 000000000..6efbade12 --- /dev/null +++ b/kernel/tools/testing/selftests/firmware/fw_userhelper.sh @@ -0,0 +1,89 @@ +#!/bin/sh +# This validates that the kernel will fall back to using the user helper +# to load firmware it can't find on disk itself. We must request a firmware +# that the kernel won't find, and any installed helper (e.g. udev) also +# won't find so that we can do the load ourself manually. +set -e + +modprobe test_firmware + +DIR=/sys/devices/virtual/misc/test_firmware + +OLD_TIMEOUT=$(cat /sys/class/firmware/timeout) + +FWPATH=$(mktemp -d) +FW="$FWPATH/test-firmware.bin" + +test_finish() +{ + echo "$OLD_TIMEOUT" >/sys/class/firmware/timeout + rm -f "$FW" + rmdir "$FWPATH" +} + +load_fw() +{ + local name="$1" + local file="$2" + + # This will block until our load (below) has finished. + echo -n "$name" >"$DIR"/trigger_request & + + # Give kernel a chance to react. + local timeout=10 + while [ ! -e "$DIR"/"$name"/loading ]; do + sleep 0.1 + timeout=$(( $timeout - 1 )) + if [ "$timeout" -eq 0 ]; then + echo "$0: firmware interface never appeared" >&2 + exit 1 + fi + done + + echo 1 >"$DIR"/"$name"/loading + cat "$file" >"$DIR"/"$name"/data + echo 0 >"$DIR"/"$name"/loading + + # Wait for request to finish. + wait +} + +trap "test_finish" EXIT + +# This is an unlikely real-world firmware content. :) +echo "ABCD0123" >"$FW" +NAME=$(basename "$FW") + +# Test failure when doing nothing (timeout works). +echo 1 >/sys/class/firmware/timeout +echo -n "$NAME" >"$DIR"/trigger_request +if diff -q "$FW" /dev/test_firmware >/dev/null ; then + echo "$0: firmware was not expected to match" >&2 + exit 1 +else + echo "$0: timeout works" +fi + +# Put timeout high enough for us to do work but not so long that failures +# slow down this test too much. +echo 4 >/sys/class/firmware/timeout + +# Load this script instead of the desired firmware. +load_fw "$NAME" "$0" +if diff -q "$FW" /dev/test_firmware >/dev/null ; then + echo "$0: firmware was not expected to match" >&2 + exit 1 +else + echo "$0: firmware comparison works" +fi + +# Do a proper load, which should work correctly. +load_fw "$NAME" "$FW" +if ! diff -q "$FW" /dev/test_firmware >/dev/null ; then + echo "$0: firmware was not loaded" >&2 + exit 1 +else + echo "$0: user helper firmware loading works" +fi + +exit 0 |