linux-kernel - [PATCH] lib/decompress_unlzma: Do a NULL check for pointer

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Date:	Thu, 13 Aug 2015 23:52:30 -0300
From:	Fabio Estevam <festevam@...il.com>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org,
	Fabio Estevam <fabio.estevam@...escale.com>
Subject: [PATCH] lib/decompress_unlzma: Do a NULL check for pointer

From: Fabio Estevam <fabio.estevam@...escale.com>

Compare pointer-typed values to NULL rather than 0.

The semantic patch that makes this change is available
in scripts/coccinelle/null/badzero.cocci.

Signed-off-by: Fabio Estevam <fabio.estevam@...escale.com>
---
 lib/decompress_unlzma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/decompress_unlzma.c b/lib/decompress_unlzma.c
index 0be83af..04d6813 100644
--- a/lib/decompress_unlzma.c
+++ b/lib/decompress_unlzma.c
@@ -620,7 +620,7 @@ STATIC inline int INIT unlzma(unsigned char *buf, long in_len,
 
 	num_probs = LZMA_BASE_SIZE + (LZMA_LIT_SIZE << (lc + lp));
 	p = (uint16_t *) large_malloc(num_probs * sizeof(*p));
-	if (p == 0)
+	if (p == NULL)
 		goto exit_2;
 	num_probs = LZMA_LITERAL + (LZMA_LIT_SIZE << (lc + lp));
 	for (i = 0; i < num_probs; i++)
-- 
1.9.1

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