linux-kernel - [PATCH] fpga: stratix10-soc: Fix return value check in s10_ops_write

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Message-ID: <20221126071430.19540-1-zhengyongjun3@huawei.com>
Date:   Sat, 26 Nov 2022 07:14:30 +0000
From:   Zheng Yongjun <zhengyongjun3@...wei.com>
To:     <mdf@...nel.org>, <hao.wu@...el.com>, <yilun.xu@...el.com>,
        <linux-fpga@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <trix@...hat.com>
Subject: [PATCH] fpga: stratix10-soc: Fix return value check in s10_ops_write_init()

In case of error, the function stratix10_svc_allocate_memory()
returns ERR_PTR() and never returns NULL. The NULL test in the
return value check should be replaced with IS_ERR().

Fixes: e7eef1d7633a ("fpga: add intel stratix10 soc fpga manager driver")
Signed-off-by: Zheng Yongjun <zhengyongjun3@...wei.com>
---
 drivers/fpga/stratix10-soc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/fpga/stratix10-soc.c b/drivers/fpga/stratix10-soc.c
index 357cea58ec98..f7f01982a512 100644
--- a/drivers/fpga/stratix10-soc.c
+++ b/drivers/fpga/stratix10-soc.c
@@ -213,9 +213,9 @@ static int s10_ops_write_init(struct fpga_manager *mgr,
 	/* Allocate buffers from the service layer's pool. */
 	for (i = 0; i < NUM_SVC_BUFS; i++) {
 		kbuf = stratix10_svc_allocate_memory(priv->chan, SVC_BUF_SIZE);
-		if (!kbuf) {
+		if (IS_ERR(kbuf)) {
 			s10_free_buffers(mgr);
-			ret = -ENOMEM;
+			ret = PTR_ERR(kbuf);
 			goto init_done;
 		}

--
2.17.1