From 9b56938faf0a480af6940edd46d2364e9c778ed1 Mon Sep 17 00:00:00 2001
From: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Date: Wed, 22 Dec 2021 15:12:07 +0800
Subject: [PATCH 23/37] fjes: Check for error irq
Git-commit: db6d6afe382de5a65d6ccf51253ab48b8e8336c3
Patch-mainline: v5.16-rc7
References: git-fixes

I find that platform_get_irq() will not always succeed.
It will return error irq in case of the failure.
Therefore, it might be better to check it if order to avoid the use of
error irq.

Fixes: 658d439b2292 ("fjes: Introduce FUJITSU Extended Socket Network Device driver")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Denis Kirjanov <denis.kirjanov@suse.com>
---
 drivers/net/fjes/fjes_main.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/fjes/fjes_main.c b/drivers/net/fjes/fjes_main.c
index 185c8a398681..1d1808afd529 100644
--- a/drivers/net/fjes/fjes_main.c
+++ b/drivers/net/fjes/fjes_main.c
@@ -1261,6 +1261,11 @@ static int fjes_probe(struct platform_device *plat_dev)
 	hw->hw_res.start = res->start;
 	hw->hw_res.size = resource_size(res);
 	hw->hw_res.irq = platform_get_irq(plat_dev, 0);
+	if (hw->hw_res.irq < 0) {
+		err = hw->hw_res.irq;
+		goto err_free_control_wq;
+	}
+
 	err = fjes_hw_init(&adapter->hw);
 	if (err)
 		goto err_free_control_wq;
-- 
2.16.4