From a5c277ec5a331171c6508924ce7767e363bf3a05 Mon Sep 17 00:00:00 2001
From: Maurizio Lombardi <mlombard@redhat.com>
Date: Mon, 28 Jul 2014 14:55:27 +0200
Subject: [PATCH] qla4xxx: check the return value of dma_alloc_coherent()

the qla4xxx_alloc_fw_dump() calls dma_alloc_coherent() but does not
check its return value.

Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Acked-By: Nilesh Javali <nilesh.javali@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/scsi/qla4xxx/ql4_init.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/scsi/qla4xxx/ql4_init.c b/drivers/scsi/qla4xxx/ql4_init.c
index 6f12f859b11d..4180d6d9fe78 100644
--- a/drivers/scsi/qla4xxx/ql4_init.c
+++ b/drivers/scsi/qla4xxx/ql4_init.c
@@ -334,6 +334,12 @@ void qla4xxx_alloc_fw_dump(struct scsi_qla_host *ha)
 	/* Allocate memory for saving the template */
 	md_tmp = dma_alloc_coherent(&ha->pdev->dev, ha->fw_dump_tmplt_size,
 				    &md_tmp_dma, GFP_KERNEL);
+	if (!md_tmp) {
+		ql4_printk(KERN_INFO, ha,
+			   "scsi%ld: Failed to allocate DMA memory\n",
+			   ha->host_no);
+		return;
+	}
 
 	/* Request template */
 	status =  qla4xxx_get_minidump_template(ha, md_tmp_dma);
-- 
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