linux-kernel - [PATCH -next] hv_utils: Fix passing zero to 'PTR

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Date:   Fri, 14 May 2021 15:01:16 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <kys@...rosoft.com>, <haiyangz@...rosoft.com>,
        <sthemmin@...rosoft.com>, <wei.liu@...nel.org>,
        <decui@...rosoft.com>, <lkmlabelt@...il.com>
CC:     <linux-hyperv@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH -next] hv_utils: Fix passing zero to 'PTR_ERR' warning

Sparse warn this:

drivers/hv/hv_util.c:753 hv_timesync_init() warn:
 passing zero to 'PTR_ERR'

Use PTR_ERR_OR_ZERO instead of PTR_ERR to fix this.

Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/hv/hv_util.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c
index e4aefeb330da..367fc6b3db3e 100644
--- a/drivers/hv/hv_util.c
+++ b/drivers/hv/hv_util.c
@@ -751,7 +751,7 @@ static int hv_timesync_init(struct hv_util_service *srv)
 	hv_ptp_clock = ptp_clock_register(&ptp_hyperv_info, NULL);
 	if (IS_ERR_OR_NULL(hv_ptp_clock)) {
 		pr_err("cannot register PTP clock: %ld\n",
-		       PTR_ERR(hv_ptp_clock));
+		       PTR_ERR_OR_ZERO(hv_ptp_clock));
 		hv_ptp_clock = NULL;
 	}
 
-- 
2.17.1