selftests: kmod: use variable NAME in kmod_test_0001()

Patch series "kmod/umh: a few fixes".

Tiezhu Yang had sent out a patch set with a slew of kmod selftest fixes,
and one patch which modified kmod to return 254 when a module was not
found.  This opened up pandora's box about why that was being used for and
low and behold its because when UMH_WAIT_PROC is used we call a
kernel_wait4() call but have never unwrapped the error code.  The commit
log for that fix details the rationale for the approach taken.  I'd
appreciate some review on that, in particular nfs folks as it seems a case
was never really hit before.

This patch (of 5):

Use the variable NAME instead of "\000" directly in kmod_test_0001().

Signed-off-by: Tiezhu Yang <[email protected]>
Signed-off-by: Luis Chamberlain <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Acked-by: Luis Chamberlain <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Philipp Reisner <[email protected]>
Cc: Lars Ellenberg <[email protected]>
Cc: Jens Axboe <[email protected]>
Cc: J. Bruce Fields <[email protected]>
Cc: Chuck Lever <[email protected]>
Cc: Roopa Prabhu <[email protected]>
Cc: Nikolay Aleksandrov <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: Jakub Kicinski <[email protected]>
Cc: David Howells <[email protected]>
Cc: Jarkko Sakkinen <[email protected]>
Cc: James Morris <[email protected]>
Cc: "Serge E. Hallyn" <[email protected]>
Cc: Christian Brauner <[email protected]>
Cc: Sergei Trofimovich <[email protected]>
Cc: Alexei Starovoitov <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Josh Triplett <[email protected]>
Cc: Sergey Kvachonok <[email protected]>
Cc: Tony Vroon <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>

tools/testing/selftests/kmod/kmod.sh

@@ -343,7 +343,7 @@ kmod_test_0001_driver()
 
 	kmod_defaults_driver
 	config_num_threads 1
-	printf '\000' >"$DIR"/config_test_driver
+	printf $NAME >"$DIR"/config_test_driver
 	config_trigger ${FUNCNAME[0]}
 	config_expect_result ${FUNCNAME[0]} MODULE_NOT_FOUND
 }
@@ -354,7 +354,7 @@ kmod_test_0001_fs()
 
 	kmod_defaults_fs
 	config_num_threads 1
-	printf '\000' >"$DIR"/config_test_fs
+	printf $NAME >"$DIR"/config_test_fs
 	config_trigger ${FUNCNAME[0]}
 	config_expect_result ${FUNCNAME[0]} -EINVAL
 }