From 9f173b33843552c48e0136e02e7362c8229c8e57 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 5 Nov 2014 23:39:09 +0300
Subject: [PATCH] NVMe: blk_mq_alloc_request() returns error pointers

We recently converted this to blk_mq but the error checks have to be
updated to check for IS_ERR() instead of NULL.

Fixes: a4aea5623d4a ('NVMe: Convert to blk-mq')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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