[SCSI] handle scsi_add_host failure for aic79xx and fix compiler warning

Add scsi_add_host() failure handling for aic79xx
Also silence a compiler warning :
 drivers/scsi/aic7xxx/aic79xx_osm.c: In function `ahd_linux_register_host':
 drivers/scsi/aic7xxx/aic79xx_osm.c:1099: warning: ignoring return value of `scsi_add_host', declared with attribute warn_unused_result

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c
index 6aab9da..1c8f872 100644 (file)
--- a/drivers/scsi/aic7xxx/aic79xx_osm.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.c
@@ -1064,6 +1064,7 @@ ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *templa
        struct  Scsi_Host *host;
        char    *new_name;
        u_long  s;
+       int     retval;
 
        template->name = ahd->description;
        host = scsi_host_alloc(template, sizeof(struct ahd_softc *));
@@ -1096,9 +1097,15 @@ ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *templa
 
        host->transportt = ahd_linux_transport_template;
 
-       scsi_add_host(host, &ahd->dev_softc->dev); /* XXX handle failure */
+       retval = scsi_add_host(host, &ahd->dev_softc->dev);
+       if (retval) {
+               printk(KERN_WARNING "aic79xx: scsi_add_host failed\n");
+               scsi_host_put(host);
+               return retval;
+       }
+
        scsi_scan_host(host);
-       return (0);
+       return 0;
 }
 
 uint64_t