linux-kernel - [PATCH -mm] IPS SCSI driver: Check return of scsi_add

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Date:	Mon, 3 Sep 2007 01:43:49 +0530 (IST)
From:	Satyam Sharma <satyam@...radead.org>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
cc:	James Bottomley <james.bottomley@...eleye.com>,
	aacraid@...ptec.com, linux-scsi@...r.kernel.org
Subject: [PATCH -mm] IPS SCSI driver: Check return of scsi_add_host()


drivers/scsi/ips.c: In function ‘ips_register_scsi’:
drivers/scsi/ips.c:6869:
warning: ignoring return value of ‘scsi_add_host’, declared with attribute warn_unused_result

scsi_add_host() is __must_check, so let's check it's return and cleanup
appropriately on errors.

Signed-off-by: Satyam Sharma <satyam@...radead.org>

---

 drivers/scsi/ips.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- linux-2.6.23-rc4-mm1/drivers/scsi/ips.c‾fix	2007-09-02 20:21:27.000000000 +0530
+++ linux-2.6.23-rc4-mm1/drivers/scsi/ips.c	2007-09-02 20:25:58.000000000 +0530
@@ -6866,7 +6866,12 @@ ips_register_scsi(int index)
 	sh->max_channel = ha->nbus - 1;
 	sh->can_queue = ha->max_cmds - 1;
 
-	scsi_add_host(sh, NULL);
+	if (scsi_add_host(sh, NULL)) {
+		IPS_PRINTK(KERN_WARNING, ha->pcidev, "Unable to add SCSI host¥n");
+		free_irq(ha->irq, ha);
+		scsi_host_put(sh);
+		return -1;
+	}
 	scsi_scan_host(sh);
 
 	return 0;