This is a note to let you know that I've just added the patch titled

test: firmware_class: report errors properly on failure

to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: test-firmware_class-report-errors-properly-on-failure.patch and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 47e0bbb7fa985a0f1b5794a8653fae4f8f49de77 Mon Sep 17 00:00:00 2001

From: Brian Norris computersforpeace@gmail.com Date: Wed, 9 Dec 2015 14:50:25 -0800 Subject: test: firmware_class: report errors properly on failure

From: Brian Norris computersforpeace@gmail.com

commit 47e0bbb7fa985a0f1b5794a8653fae4f8f49de77 upstream.

request_firmware() failures currently won't get reported at all (the error code is discarded). What's more, we get confusing messages, like:

# echo -n notafile > /sys/devices/virtual/misc/test_firmware/trigger_request [ 8280.311856] test_firmware: loading 'notafile' [ 8280.317042] test_firmware: load of 'notafile' failed: -2 [ 8280.322445] test_firmware: loaded: 0 # echo $? 0

Report the failures via write() errors, and don't say we "loaded" anything.

Signed-off-by: Brian Norris computersforpeace@gmail.com Acked-by: Kees Cook keescook@chromium.org Signed-off-by: Shuah Khan shuahkh@osg.samsung.com Signed-off-by: Amit Pundir amit.pundir@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- lib/test_firmware.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)

--- a/lib/test_firmware.c +++ b/lib/test_firmware.c @@ -65,14 +65,19 @@ static ssize_t trigger_request_store(str release_firmware(test_firmware); test_firmware = NULL; rc = request_firmware(&test_firmware, name, dev); - if (rc) + if (rc) { pr_info("load of '%s' failed: %d\n", name, rc); - pr_info("loaded: %zu\n", test_firmware ? test_firmware->size : 0); + goto out; + } + pr_info("loaded: %zu\n", test_firmware->size); + rc = count; + +out: mutex_unlock(&test_fw_mutex);

kfree(name);

- return count; + return rc; } static DEVICE_ATTR_WO(trigger_request);

Patches currently in stable-queue which might be from computersforpeace@gmail.com are

queue-4.4/selftests-firmware-add-empty-string-and-async-tests.patch queue-4.4/test-firmware_class-report-errors-properly-on-failure.patch