firmware: fix __getname() missing failure check
The request_firmware*() APIs uses __getname() to iterate over the list of paths possible for firmware to be found, the code however never checked for failure on __getname(). Although *very unlikely*, this can still happen. Add the missing check. There is still no checks on the concatenation of the path and filename passed, that requires a bit more work and subsequent patches address this. The commit that introduced this isabb139e7
("firmware: teach the kernel to load firmware files directly from the filesystem"). mcgrof@ergon ~/linux (git::firmware-fixes) $ git describe --containsabb139e7
v3.7-rc1~120 Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Ming Lei <ming.lei@canonical.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: David Howells <dhowells@redhat.com> Cc: Kyle McMartin <kyle@kernel.org> Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -322,7 +322,11 @@ static int fw_get_filesystem_firmware(struct device *device,
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{
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int i;
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int rc = -ENOENT;
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char *path = __getname();
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char *path;
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path = __getname();
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if (!path)
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return -ENOMEM;
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for (i = 0; i < ARRAY_SIZE(fw_path); i++) {
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struct file *file;
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