linux-kernel - [PATCH] hwmon: (xgene) fix return value in xgene_hwmon

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Date:   Fri, 22 Oct 2021 16:44:46 +0800
From:   Kai Song <songkai01@...pur.com>
To:     <jdelvare@...e.com>, <linux@...ck-us.net>
CC:     <linux-hwmon@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Kai Song <songkai01@...pur.com>
Subject: [PATCH] hwmon: (xgene) fix return value in xgene_hwmon_probe()

It uses IS_ERR to judge the return value of mbox_request_channel()
and pcc_mbox_request_channel().If it is invalid, maybe we should
use PTR_ERR to get the correct return value.

Signed-off-by: Kai Song <songkai01@...pur.com>
---
 drivers/hwmon/xgene-hwmon.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hwmon/xgene-hwmon.c b/drivers/hwmon/xgene-hwmon.c
index 382ef0395d8e..fd0847f251c0 100644
--- a/drivers/hwmon/xgene-hwmon.c
+++ b/drivers/hwmon/xgene-hwmon.c
@@ -648,7 +648,7 @@ static int xgene_hwmon_probe(struct platform_device *pdev)
 		if (IS_ERR(ctx->mbox_chan)) {
 			dev_err(&pdev->dev,
 				"SLIMpro mailbox channel request failed\n");
-			rc = -ENODEV;
+			rc = PTR_ERR(ctx->mbox_chan);
 			goto out_mbox_free;
 		}
 	} else {
@@ -675,7 +675,7 @@ static int xgene_hwmon_probe(struct platform_device *pdev)
 		if (IS_ERR(ctx->mbox_chan)) {
 			dev_err(&pdev->dev,
 				"PPC channel request failed\n");
-			rc = -ENODEV;
+			rc = PTR_ERR(ctx->mbox_chan);
 			goto out_mbox_free;
 		}
 
-- 
2.27.0