linux-kernel - [PATCH] sample: vfio mdev display - Fix a missing error code in an error handling path

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Date:   Mon, 16 Sep 2019 22:22:40 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     kwankhede@...dia.com
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] sample: vfio mdev display - Fix a missing error code in an error handling path

'ret' is known to be 0 at this point. So explicitly set it to -ENOMEM if
'framebuffer_alloc()' fails.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 samples/vfio-mdev/mdpy-fb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/samples/vfio-mdev/mdpy-fb.c b/samples/vfio-mdev/mdpy-fb.c
index 2719bb259653..6fe0187f47a2 100644
--- a/samples/vfio-mdev/mdpy-fb.c
+++ b/samples/vfio-mdev/mdpy-fb.c
@@ -131,8 +131,10 @@ static int mdpy_fb_probe(struct pci_dev *pdev,
 		 width, height);
 
 	info = framebuffer_alloc(sizeof(struct mdpy_fb_par), &pdev->dev);
-	if (!info)
+	if (!info) {
+		ret = -ENOMEM;
 		goto err_release_regions;
+	}
 	pci_set_drvdata(pdev, info);
 	par = info->par;
 
-- 
2.20.1