[PATCH 1/4] vdpa_sim: Fix return value check for vdpa_alloc_device()
From: Xie Yongji
Date: Thu Jul 15 2021 - 04:00:03 EST
The vdpa_alloc_device() returns an error pointer upon
failure, not NULL. To handle the failure correctly, this
replaces NULL check with IS_ERR() check and propagate the
error upwards.
Fixes: 2c53d0f64c06 ("vdpasim: vDPA device simulator")
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Xie Yongji <xieyongji@xxxxxxxxxxxxx>
---
drivers/vdpa/vdpa_sim/vdpa_sim.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c
index 14e024de5cbf..c621cf7feec0 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
@@ -251,8 +251,10 @@ struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr)
vdpasim = vdpa_alloc_device(struct vdpasim, vdpa, NULL, ops,
dev_attr->name);
- if (!vdpasim)
+ if (IS_ERR(vdpasim)) {
+ ret = PTR_ERR(vdpasim);
goto err_alloc;
+ }
vdpasim->dev_attr = *dev_attr;
INIT_WORK(&vdpasim->work, dev_attr->work_fn);
--
2.11.0