#!/bin/sh # This validates that the kernel will load firmware out of its list of # firmware locations on disk. Since the user helper does similar work, # we reset the custom load directory to a location the user helper doesn't # know so we can be sure we're not accidentally testing the user helper. set -e modprobe test_firmware DIR=/sys/devices/virtual/misc/test_firmware # CONFIG_FW_LOADER_USER_HELPER has a sysfs class under /sys/class/firmware/ # These days no one enables CONFIG_FW_LOADER_USER_HELPER so check for that # as an indicator for CONFIG_FW_LOADER_USER_HELPER. HAS_FW_LOADER_USER_HELPER=$(if [ -d /sys/class/firmware/ ]; then echo yes; else echo no; fi) if [ "$HAS_FW_LOADER_USER_HELPER" = "yes" ]; then OLD_TIMEOUT=$(cat /sys/class/firmware/timeout) fi OLD_FWPATH=$(cat /sys/module/firmware_class/parameters/path) FWPATH=$(mktemp -d) FW="$FWPATH/test-firmware.bin" test_finish() { if [ "$HAS_FW_LOADER_USER_HELPER" = "yes" ]; then echo "$OLD_TIMEOUT" >/sys/class/firmware/timeout fi echo -n "$OLD_PATH" >/sys/module/firmware_class/parameters/path rm -f "$FW" rmdir "$FWPATH" } trap "test_finish" EXIT if [ "$HAS_FW_LOADER_USER_HELPER" = "yes" ]; then # Turn down the timeout so failures don't take so long. echo 1 >/sys/class/firmware/timeout fi # Set the kernel search path. echo -n "$FWPATH" >/sys/module/firmware_class/parameters/path # This is an unlikely real-world firmware content. :) echo "ABCD0123" >"$FW" NAME=$(basename "$FW") if printf '\000' >"$DIR"/trigger_request; then echo "$0: empty filename should not succeed" >&2 exit 1 fi if printf '\000' >"$DIR"/trigger_async_request; then echo "$0: empty filename should not succeed (async)" >&2 exit 1 fi # Request a firmware that doesn't exist, it should fail. if echo -n "nope-$NAME" >"$DIR"/trigger_request; then echo "$0: firmware shouldn't have loaded" >&2 exit 1 fi if diff -q "$FW" /dev/test_firmware >/dev/null ; then echo "$0: firmware was not expected to match" >&2 exit 1 else if [ "$HAS_FW_LOADER_USER_HELPER" = "yes" ]; then echo "$0: timeout works" fi fi # This should succeed via kernel load or will fail after 1 second after # being handed over to the user helper, which won't find the fw either. if ! echo -n "$NAME" >"$DIR"/trigger_request ; then echo "$0: could not trigger request" >&2 exit 1 fi # Verify the contents are what we expect. if ! diff -q "$FW" /dev/test_firmware >/dev/null ; then echo "$0: firmware was not loaded" >&2 exit 1 else echo "$0: filesystem loading works" fi # Try the asynchronous version too if ! echo -n "$NAME" >"$DIR"/trigger_async_request ; then echo "$0: could not trigger async request" >&2 exit 1 fi # Verify the contents are what we expect. if ! diff -q "$FW" /dev/test_firmware >/dev/null ; then echo "$0: firmware was not loaded (async)" >&2 exit 1 else echo "$0: async filesystem loading works" fi exit 0 t.git/commit/?id=e7aa8c2eb11ba69b1b69099c3c7bd6be3087b0ba'>root/Documentation/ABI/testing/sysfs-platform-dell-laptop
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 21:58:13 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 21:58:13 -0800
commite7aa8c2eb11ba69b1b69099c3c7bd6be3087b0ba (patch)
treef63906f41699c8e38af9d12b063e2ceab0286ef2 /Documentation/ABI/testing/sysfs-platform-dell-laptop
parente34bac726d27056081d0250c0e173e4b155aa340 (diff)
parent868c97a846a73e937d835b09b8c885a69df50ec8 (diff)
Merge tag 'docs-4.10' of git://git.lwn.net/linuxHEADmaster
Pull documentation update from Jonathan Corbet: "These are the documentation changes for 4.10. It's another busy cycle for the docs tree, as the sphinx conversion continues. Highlights include: - Further work on PDF output, which remains a bit of a pain but should be more solid now. - Five more DocBook template files converted to Sphinx. Only 27 to go... Lots of plain-text files have also been converted and integrated. - Images in binary formats have been replaced with more source-friendly versions. - Various bits of organizational work, including the renaming of various files discussed at the kernel summit. - New documentation for the device_link mechanism. ... and, of course, lots of typo fixes and small updates" * tag 'docs-4.10' of git://git.lwn.net/linux: (193 commits) dma-buf: Extract dma-buf.rst Update Documentation/00-INDEX docs: 00-INDEX: document directories/files with no docs docs: 00-INDEX: remove non-existing entries docs: 00-INDEX: add missing entries for documentation files/dirs docs: 00-INDEX: consolidate process/ and admin-guide/ description scripts: add a script to check if Documentation/00-INDEX is sane Docs: change sh -> awk in REPORTING-BUGS Documentation/core-api/device_link: Add initial documentation core-api: remove an unexpected unident ppc/idle: Add documentation for powersave=off Doc: Correct typo, "Introdution" => "Introduction" Documentation/atomic_ops.txt: convert to ReST markup Documentation/local_ops.txt: convert to ReST markup Documentation/assoc_array.txt: convert to ReST markup docs-rst: parse-headers.pl: cleanup the documentation docs-rst: fix media cleandocs target docs-rst: media/Makefile: reorganize the rules docs-rst: media: build SVG from graphviz files docs-rst: replace bayer.png by a SVG image ...
Diffstat (limited to 'Documentation/ABI/testing/sysfs-platform-dell-laptop')