cnic: Free UIO rings when the device is closed.
This will free up unneeded memory.
Reviewed-by: Eddie Wai <eddie.wai@broadcom.com>
Reviewed-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/broadcom/cnic.c b/drivers/net/ethernet/broadcom/cnic.c
index ff35894..38be4d9 100644
--- a/drivers/net/ethernet/broadcom/cnic.c
+++ b/drivers/net/ethernet/broadcom/cnic.c
@@ -868,6 +868,8 @@
if (udev) {
udev->dev = NULL;
cp->udev = NULL;
+ if (udev->uio_dev == -1)
+ __cnic_free_uio_rings(udev);
}
cnic_free_context(dev);
@@ -1039,6 +1041,11 @@
list_for_each_entry(udev, &cnic_udev_list, list) {
if (udev->pdev == dev->pcidev) {
udev->dev = dev;
+ if (__cnic_alloc_uio_rings(udev, pages)) {
+ udev->dev = NULL;
+ read_unlock(&cnic_dev_lock);
+ return -ENOMEM;
+ }
cp->udev = udev;
read_unlock(&cnic_dev_lock);
return 0;