This adds a local variable to store the user pointer cast result from arg.
It avoids the repeated casts in the code when more ioctls are added.
Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Yi Liu <yi.l.liu@xxxxxxxxx>
---
drivers/vfio/vfio_main.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/vfio/vfio_main.c b/drivers/vfio/vfio_main.c
index 5f7c3151d8c0..a2744cb64c6d 100644
--- a/drivers/vfio/vfio_main.c
+++ b/drivers/vfio/vfio_main.c
@@ -1146,6 +1146,7 @@ static long vfio_device_fops_unl_ioctl(struct file *filep,
{
struct vfio_device_file *df = filep->private_data;
struct vfio_device *device = df->device;
+ void __user *uptr = (void __user *)arg;
int ret;
/* Paired with smp_store_release() following vfio_df_open() */
@@ -1158,7 +1159,7 @@ static long vfio_device_fops_unl_ioctl(struct file *filep,
switch (cmd) {
case VFIO_DEVICE_FEATURE:
- ret = vfio_ioctl_device_feature(device, (void __user *)arg);
+ ret = vfio_ioctl_device_feature(device, uptr);
break;
default:
--
2.34.1
