linux-kernel - [PATCH v1] dtivers: ntb: fix parameter check in perf_setup

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Message-Id: <20230713034728.2157-1-duminjie@vivo.com>
Date:   Thu, 13 Jul 2023 11:47:27 +0800
From:   Minjie Du <duminjie@...o.com>
To:     Jon Mason <jdmason@...zu.us>, Dave Jiang <dave.jiang@...el.com>,
        Allen Hubbe <allenbh@...il.com>, Minjie Du <duminjie@...o.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        ntb@...ts.linux.dev (open list:NTB DRIVER CORE),
        linux-kernel@...r.kernel.org (open list)
Cc:     opensource.kernel@...o.com
Subject: [PATCH v1] dtivers: ntb: fix parameter check in perf_setup_dbgfs()

Make IS_ERR() judge the debugfs_create_dir() function return
in perf_setup_dbgfs().

Signed-off-by: Minjie Du <duminjie@...o.com>
---
 drivers/ntb/test/ntb_perf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ntb/test/ntb_perf.c b/drivers/ntb/test/ntb_perf.c
index 65e1e5cf1..553f1f46b 100644
--- a/drivers/ntb/test/ntb_perf.c
+++ b/drivers/ntb/test/ntb_perf.c
@@ -1355,7 +1355,7 @@ static void perf_setup_dbgfs(struct perf_ctx *perf)
 	struct pci_dev *pdev = perf->ntb->pdev;
 
 	perf->dbgfs_dir = debugfs_create_dir(pci_name(pdev), perf_dbgfs_topdir);
-	if (!perf->dbgfs_dir) {
+	if (IS_ERR(perf->dbgfs_dir)) {
 		dev_warn(&perf->ntb->dev, "DebugFS unsupported\n");
 		return;
 	}
-- 
2.39.0