[SCSI] zfcp: Reference counting for cfdc requests

Before dropping the reference count with zfcp_adapter_put, increase it
with zfcp_adapter_get when issuing cfdc requests.

Reviewed-by: Martin Petermann <martin@linux.vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

diff --git a/drivers/s390/scsi/zfcp_cfdc.c b/drivers/s390/scsi/zfcp_cfdc.c
index 10cbfd172a28fc2078b35dc3033a2ec1d77c1236..8305c874e86f7e5b2e4ed0f5711ec139b144d51a 100644 (file)
--- a/drivers/s390/scsi/zfcp_cfdc.c
+++ b/drivers/s390/scsi/zfcp_cfdc.c
@@ -4,7 +4,7 @@
  * Userspace interface for accessing the
  * Access Control Lists / Control File Data Channel
  *
- * Copyright IBM Corporation 2008
+ * Copyright IBM Corporation 2008, 2009
  */
 
 #define KMSG_COMPONENT "zfcp"
@@ -197,6 +197,7 @@ static long zfcp_cfdc_dev_ioctl(struct file *file, unsigned int command,
                retval = -ENXIO;
                goto free_buffer;
        }
+       zfcp_adapter_get(adapter);
 
        retval = zfcp_cfdc_sg_setup(data->command, fsf_cfdc->sg,
                                    data_user->control_file);