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test_firmware: wrap sysfs timeout test into helper 

This cannot run on all kernel builds. This will help us later
skip this test on kernel configs where non-applicable.

Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Luis R. Rodriguez 2017-11-20 10:23:59 -08:00 committed by Greg Kroah-Hartman
parent 3f72271233
commit 881c23de02
1 changed files with 35 additions and 30 deletions
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65
tools/testing/selftests/firmware/fw_fallback.sh
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@ -175,39 +175,44 @@ trap "test_finish" EXIT
echo "ABCD0123" >"$FW"
NAME=$(basename "$FW")
DEVPATH="$DIR"/"nope-$NAME"/loading
test_syfs_timeout()
{
DEVPATH="$DIR"/"nope-$NAME"/loading
# Test failure when doing nothing (timeout works).
echo -n 2 >/sys/class/firmware/timeout
echo -n "nope-$NAME" >"$DIR"/trigger_request 2>/dev/null &
# Test failure when doing nothing (timeout works).
echo -n 2 >/sys/class/firmware/timeout
echo -n "nope-$NAME" >"$DIR"/trigger_request 2>/dev/null &
# Give the kernel some time to load the loading file, must be less
# than the timeout above.
sleep 1
if [ ! -f $DEVPATH ]; then
echo "$0: fallback mechanism immediately cancelled"
echo ""
echo "The file never appeared: $DEVPATH"
echo ""
echo "This might be a distribution udev rule setup by your distribution"
echo "to immediately cancel all fallback requests, this must be"
echo "removed before running these tests. To confirm look for"
echo "a firmware rule like /lib/udev/rules.d/50-firmware.rules"
echo "and see if you have something like this:"
echo ""
echo "SUBSYSTEM==\"firmware\", ACTION==\"add\", ATTR{loading}=\"-1\""
echo ""
echo "If you do remove this file or comment out this line before"
echo "proceeding with these tests."
exit 1
fi
# Give the kernel some time to load the loading file, must be less
# than the timeout above.
sleep 1
if [ ! -f $DEVPATH ]; then
echo "$0: fallback mechanism immediately cancelled"
echo ""
echo "The file never appeared: $DEVPATH"
echo ""
echo "This might be a distribution udev rule setup by your distribution"
echo "to immediately cancel all fallback requests, this must be"
echo "removed before running these tests. To confirm look for"
echo "a firmware rule like /lib/udev/rules.d/50-firmware.rules"
echo "and see if you have something like this:"
echo ""
echo "SUBSYSTEM==\"firmware\", ACTION==\"add\", ATTR{loading}=\"-1\""
echo ""
echo "If you do remove this file or comment out this line before"
echo "proceeding with these tests."
exit 1
fi
if diff -q "$FW" /dev/test_firmware >/dev/null ; then
echo "$0: firmware was not expected to match" >&2
exit 1
else
echo "$0: timeout works"
fi
if diff -q "$FW" /dev/test_firmware >/dev/null ; then
echo "$0: firmware was not expected to match" >&2
exit 1
else
echo "$0: timeout works"
fi
}
test_syfs_timeout
# Put timeout high enough for us to do work but not so long that failures
# slow down this test too much.