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test_firmware: fix error return getting clobbered 

In the case where eq->fw->size > PAGE_SIZE the error return rc
is being set to EINVAL however this is being overwritten to
rc = req->fw->size because the error exit path via label 'out' is
not being taken.  Fix this by adding the jump to the error exit
path 'out'.

Detected by CoverityScan, CID#1453465 ("Unused value")

Fixes: c92316bf8e ("test_firmware: add batched firmware tests")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Colin Ian King 2018-10-19 13:58:01 +01:00 committed by Greg Kroah-Hartman
parent 0749aa25af
commit 8bb0a88600
1 changed files with 1 additions and 0 deletions
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lib/test_firmware.c
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@ -837,6 +837,7 @@ static ssize_t read_firmware_show(struct device *dev,
if (req->fw->size > PAGE_SIZE) {
pr_err("Testing interface must use PAGE_SIZE firmware for now\n");
rc = -EINVAL;
goto out;
}
memcpy(buf, req->fw->data, req->fw->size);