fjes: Check for error irq

[ Upstream commit db6d6afe382de5a65d6ccf51253ab48b8e8336c3 ]

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: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/fjes/fjes_main.c b/drivers/net/fjes/fjes_main.c
index 778d3729f460a938d18fe9158c54450f8e8ed9b5..89b3bc389f469a469bf4dffb205144feeca6fc1c 100644 (file)
--- a/drivers/net/fjes/fjes_main.c
+++ b/drivers/net/fjes/fjes_main.c
@@ -1284,6 +1284,11 @@ 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;