[PATCH v1] vdpa: Consider device id larger than 31

From: Parav Pandit
Date: Mon Nov 29 2021 - 23:30:09 EST


virtio device id value can be more than 31. Hence, use BIT_ULL in
assignment.

Fixes: 33b347503f01 ("vdpa: Define vdpa mgmt device, ops and a netlink interface")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Parav Pandit <parav@xxxxxxxxxx>
Acked-by: Jason Wang <jasowang@xxxxxxxxxx>
---
changelog:
v0->v1:
- supporting device id up to 63
---
drivers/vdpa/vdpa.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c
index 7332a74a4b00..09bbe53c3ac4 100644
--- a/drivers/vdpa/vdpa.c
+++ b/drivers/vdpa/vdpa.c
@@ -404,7 +404,8 @@ static int vdpa_mgmtdev_fill(const struct vdpa_mgmt_dev *mdev, struct sk_buff *m
goto msg_err;

while (mdev->id_table[i].device) {
- supported_classes |= BIT(mdev->id_table[i].device);
+ if (mdev->id_table[i].device <= 63)
+ supported_classes |= BIT_ULL(mdev->id_table[i].device);
i++;
}

--
2.26.2