linux-kernel - [PATCH 3/3] staging: lustre: lnet/selftest: don't ignore status from lstcon_test

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Date:   Fri, 23 Feb 2018 09:09:33 +1100
From:   NeilBrown <neilb@...e.com>
To:     devel@...verdev.osuosl.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Oleg Drokin <oleg.drokin@...el.com>,
        James Simmons <jsimmons@...radead.org>,
        Andreas Dilger <andreas.dilger@...el.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Lustre Development List <lustre-devel@...ts.lustre.org>
Subject: [PATCH 3/3] staging: lustre: lnet/selftest: don't ignore status
 from lstcon_test_add

If lstcon_test_add sets 'ret' (passed by reference) to 1,
then lst_test_add_ioctl() ignores the return value.
This isn't justified - the return value must be zero for 'ret'
to be meaningful.

Signed-off-by: NeilBrown <neilb@...e.com>
---
 drivers/staging/lustre/lnet/selftest/conctl.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/lustre/lnet/selftest/conctl.c b/drivers/staging/lustre/lnet/selftest/conctl.c
index 51497cf9a832..a2d8092bdeb7 100644
--- a/drivers/staging/lustre/lnet/selftest/conctl.c
+++ b/drivers/staging/lustre/lnet/selftest/conctl.c
@@ -670,7 +670,7 @@ static int lst_test_add_ioctl(struct lstio_test_args *args)
 			     args->lstio_tes_param_len,
 			     &ret, args->lstio_tes_resultp);
 
-	if (ret)
+	if (!rc && ret)
 		rc = (copy_to_user(args->lstio_tes_retp, &ret,
 				   sizeof(ret))) ? -EFAULT : 0;
 out: