linux-kernel - [PATCH] x86/platform/uv: move kmalloc() NULL check routine

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Message-ID: <20190905232951.GA28779@LGEARND20B15>
Date:   Fri, 6 Sep 2019 08:29:51 +0900
From:   Austin Kim <austindh.kim@...il.com>
To:     tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, x86@...nel.org
Cc:     dvhart@...radead.org, andy@...radead.org, hpa@...or.com,
        x86@...nel.org, gregkh@...uxfoundation.org, allison@...utok.net,
        armijn@...ldur.nl, kjlu@....edu,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] x86/platform/uv: move kmalloc() NULL check routine

The result of kmalloc should have been checked ahead of below statement:
	pqp = (struct bau_pq_entry *)vp;

Move BUG_ON(!vp) before above statement.

Signed-off-by: Austin Kim <austindh.kim@...il.com>
---
 arch/x86/platform/uv/tlb_uv.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c
index 20c389a..5f0a96bf 100644
--- a/arch/x86/platform/uv/tlb_uv.c
+++ b/arch/x86/platform/uv/tlb_uv.c
@@ -1804,9 +1804,9 @@ static void pq_init(int node, int pnode)
 
 	plsize = (DEST_Q_SIZE + 1) * sizeof(struct bau_pq_entry);
 	vp = kmalloc_node(plsize, GFP_KERNEL, node);
-	pqp = (struct bau_pq_entry *)vp;
-	BUG_ON(!pqp);
+	BUG_ON(!vp);
 
+	pqp = (struct bau_pq_entry *)vp;
 	cp = (char *)pqp + 31;
 	pqp = (struct bau_pq_entry *)(((unsigned long)cp >> 5) << 5);
 
-- 
2.6.2