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| author | Mike Christie <michaelc@cs.wisc.edu> | 2010-02-10 16:51:44 -0600 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-02-17 13:40:07 -0600 |
| commit | 9010b94636312c7fb12b591ef09e915f8f80bbd5 (patch) | |
| tree | d84995617c8d9b1ac9b5dba2576c28a2429cc58f /drivers/scsi | |
| parent | d9573e7af16de0e3aa55db1703dbe544faf391de (diff) | |
| download | linux-9010b94636312c7fb12b591ef09e915f8f80bbd5.tar.gz linux-9010b94636312c7fb12b591ef09e915f8f80bbd5.tar.bz2 linux-9010b94636312c7fb12b591ef09e915f8f80bbd5.zip | |
[SCSI] cxgb3i: check for setup netdev
If the netdev has not been setup when the host is, we will oops when
the iscsi layer calls into the driver and a it tries to reference the
netdev in hba->ndev.
This can happen if the iscsi driver is loaded before ifup is
done. This patch just adds a check, so we can gracefully fail the
operation.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/cxgb3i/cxgb3i_iscsi.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/scsi/cxgb3i/cxgb3i_iscsi.c b/drivers/scsi/cxgb3i/cxgb3i_iscsi.c index 1fd89b229c87..412853c65372 100644 --- a/drivers/scsi/cxgb3i/cxgb3i_iscsi.c +++ b/drivers/scsi/cxgb3i/cxgb3i_iscsi.c @@ -708,6 +708,12 @@ static int cxgb3i_host_set_param(struct Scsi_Host *shost, { struct cxgb3i_hba *hba = iscsi_host_priv(shost); + if (!hba->ndev) { + shost_printk(KERN_ERR, shost, "Could not set host param. " + "Netdev for host not set.\n"); + return -ENODEV; + } + cxgb3i_api_debug("param %d, buf %s.\n", param, buf); switch (param) { @@ -738,6 +744,12 @@ static int cxgb3i_host_get_param(struct Scsi_Host *shost, struct cxgb3i_hba *hba = iscsi_host_priv(shost); int len = 0; + if (!hba->ndev) { + shost_printk(KERN_ERR, shost, "Could not set host param. " + "Netdev for host not set.\n"); + return -ENODEV; + } + cxgb3i_api_debug("hba %s, param %d.\n", hba->ndev->name, param); switch (param) { |