diff options
| author | Michael Chan <mchan@broadcom.com> | 2014-06-03 08:08:47 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-06-03 08:16:41 +0200 |
| commit | 437b8a26f9d057505e631b9b556e9d80c1987aca (patch) | |
| tree | 8ae56824c481cde1fdb5504be48a21475e8d4272 /drivers/net/ethernet/broadcom/cnic.c | |
| parent | cnic: Don't take rcu_read_lock in cnic_rcv_netevent() (diff) | |
| download | linux-437b8a26f9d057505e631b9b556e9d80c1987aca.tar.xz linux-437b8a26f9d057505e631b9b556e9d80c1987aca.zip | |
cnic: Don't take cnic_dev_lock in cnic_alloc_uio_rings()
We are allocating memory with GFP_KERNEL under spinlock. Since this is
the only call manipulating the cnic_udev_list and it is always under
rtnl_lock, cnic_dev_lock can be safely removed.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom/cnic.c')
| -rw-r--r-- | drivers/net/ethernet/broadcom/cnic.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/net/ethernet/broadcom/cnic.c b/drivers/net/ethernet/broadcom/cnic.c index a0aae722ffcf..8da1060f03f0 100644 --- a/drivers/net/ethernet/broadcom/cnic.c +++ b/drivers/net/ethernet/broadcom/cnic.c @@ -1039,21 +1039,17 @@ static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages) struct cnic_local *cp = dev->cnic_priv; struct cnic_uio_dev *udev; - read_lock(&cnic_dev_lock); 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; } } - read_unlock(&cnic_dev_lock); udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC); if (!udev) @@ -1067,9 +1063,7 @@ static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages) if (__cnic_alloc_uio_rings(udev, pages)) goto err_udev; - write_lock(&cnic_dev_lock); list_add(&udev->list, &cnic_udev_list); - write_unlock(&cnic_dev_lock); pci_dev_get(udev->pdev); |