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vxge: fix memory leak in vxge_alloc_msix() error path

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When pci_enable_msix() returned ret<0, entries and vxge_entries were leaked.
While at it, use the centralized exit idiom in the function.

Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Acked-by: Ram Vepa <ram.vepa@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michal Schmidt 2010-06-24 04:13:44 +00:00 committed by David S. Miller
parent 1b4843c5e8
commit cc413d9097
1 changed files with 20 additions and 9 deletions
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29
drivers/net/vxge/vxge-main.c
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@ -2262,7 +2262,8 @@ static int vxge_alloc_msix(struct vxgedev *vdev)
vxge_debug_init(VXGE_ERR,
"%s: memory allocation failed",
VXGE_DRIVER_NAME);
return -ENOMEM;
ret = -ENOMEM;
goto alloc_entries_failed;
}
vdev->vxge_entries =
@ -2271,8 +2272,8 @@ static int vxge_alloc_msix(struct vxgedev *vdev)
if (!vdev->vxge_entries) {
vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
VXGE_DRIVER_NAME);
kfree(vdev->entries);
return -ENOMEM;
ret = -ENOMEM;
goto alloc_vxge_entries_failed;
}
for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
@ -2303,22 +2304,32 @@ static int vxge_alloc_msix(struct vxgedev *vdev)
vxge_debug_init(VXGE_ERR,
"%s: MSI-X enable failed for %d vectors, ret: %d",
VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
ret = -ENODEV;
goto enable_msix_failed;
}
kfree(vdev->entries);
kfree(vdev->vxge_entries);
vdev->entries = NULL;
vdev->vxge_entries = NULL;
if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3))
return -ENODEV;
/* Try with less no of vector by reducing no of vpaths count */
temp = (ret - 1)/2;
vxge_close_vpaths(vdev, temp);
vdev->no_of_vpath = temp;
goto start;
} else if (ret < 0)
return -ENODEV;
} else if (ret < 0) {
ret = -ENODEV;
goto enable_msix_failed;
}
return 0;
enable_msix_failed:
kfree(vdev->vxge_entries);
alloc_vxge_entries_failed:
kfree(vdev->entries);
alloc_entries_failed:
return ret;
}
static int vxge_enable_msix(struct vxgedev *vdev)