linux-kernel - [PATCH 5.8 102/255] vdpa: ifcvf: return err when fail to request config irq

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Message-Id: <20200901151005.601082207@linuxfoundation.org>
Date:   Tue,  1 Sep 2020 17:09:18 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Zhu Lingshan <lingshan.zhu@...el.com>,
        Jason Wang <jasowang@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Maxime Coquelin <maxime.coquelin@...hat.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.8 102/255] vdpa: ifcvf: return err when fail to request config irq

From: Jason Wang <jasowang@...hat.com>

[ Upstream commit 9f4ce5d72b8e7a1f750598407c99f9e39dfb12fc ]

We ignore the err of requesting config interrupt, fix this.

Fixes: e7991f376a4d ("ifcvf: implement config interrupt in IFCVF")
Cc: Zhu Lingshan <lingshan.zhu@...el.com>
Signed-off-by: Jason Wang <jasowang@...hat.com>
Link: https://lore.kernel.org/r/20200723091254.20617-1-jasowang@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
Reviewed-by: Zhu Lingshan <lingshan.zhu@...el.com>
Fixes: e7991f376a4d ("ifcvf: implement config interrupt in IFCVF")
Cc: Zhu Lingshan <a class="moz-txt-link-rfc2396E" href="mailto:lingshan.zhu@...el.com">&lt;lingshan.zhu@...el.com&gt;</a>
Signed-off-by: Jason Wang <a class="moz-txt-link-rfc2396E" href="mailto:jasowang@...hat.com">&lt;jasowang@...hat.com&gt;</a>
Tested-by: Maxime Coquelin <maxime.coquelin@...hat.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/vdpa/ifcvf/ifcvf_main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c
index f5a60c14b9799..ae7110955a44d 100644
--- a/drivers/vdpa/ifcvf/ifcvf_main.c
+++ b/drivers/vdpa/ifcvf/ifcvf_main.c
@@ -76,6 +76,10 @@ static int ifcvf_request_irq(struct ifcvf_adapter *adapter)
 	ret = devm_request_irq(&pdev->dev, irq,
 			       ifcvf_config_changed, 0,
 			       vf->config_msix_name, vf);
+	if (ret) {
+		IFCVF_ERR(pdev, "Failed to request config irq\n");
+		return ret;
+	}
 
 	for (i = 0; i < IFCVF_MAX_QUEUE_PAIRS * 2; i++) {
 		snprintf(vf->vring[i].msix_name, 256, "ifcvf[%s]-%d\n",
-- 
2.25.1