linux-kernel - [PATCH v2] NTB: Fix an error code in ntb_msit

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Date:   Mon,  7 Jun 2021 13:56:20 +0800
From:   Yang Li <yang.lee@...ux.alibaba.com>
To:     jdmason@...zu.us
Cc:     dave.jiang@...el.com, allenbh@...il.com, logang@...tatee.com,
        linux-ntb@...glegroups.com, linux-kernel@...r.kernel.org,
        Yang Li <yang.lee@...ux.alibaba.com>
Subject: [PATCH v2] NTB: Fix an error code in ntb_msit_probe()

When the value of nm->isr_ctx is false, the value of ret is 0.
So, we set ret to -ENOMEM to indicate this error.

Clean up smatch warning:
drivers/ntb/test/ntb_msi_test.c:373 ntb_msit_probe() warn: missing
error code 'ret'.

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>
---

Change in v2:
--revise typo

 drivers/ntb/test/ntb_msi_test.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/ntb/test/ntb_msi_test.c b/drivers/ntb/test/ntb_msi_test.c
index 7095ecd..4e18e08 100644
--- a/drivers/ntb/test/ntb_msi_test.c
+++ b/drivers/ntb/test/ntb_msi_test.c
@@ -369,8 +369,10 @@ static int ntb_msit_probe(struct ntb_client *client, struct ntb_dev *ntb)
 	if (ret)
 		goto remove_dbgfs;
 
-	if (!nm->isr_ctx)
+	if (!nm->isr_ctx) {
+		ret = -ENOMEM;
 		goto remove_dbgfs;
+	}
 
 	ntb_link_enable(ntb, NTB_SPEED_AUTO, NTB_WIDTH_AUTO);
 
-- 
1.8.3.1