linux-kernel - [PATCH] arch: cris: arch-v32: drivers: axisflashmap.c: Cleaning up inconsistent NULL checks

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Message-Id: <1400796009-12716-1-git-send-email-rickard_strandqvist@spectrumdigital.se>
Date:	Fri, 23 May 2014 00:00:09 +0200
From:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
To:	Mikael Starvik <starvik@...s.com>,
	Jesper Nilsson <jesper.nilsson@...s.com>
Cc:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>,
	Al Viro <viro@...iv.linux.org.uk>, linux-cris-kernel@...s.com,
	linux-kernel@...r.kernel.org
Subject: [PATCH] arch: cris: arch-v32: drivers: axisflashmap.c:  Cleaning up inconsistent NULL checks

Cleaning up inconsistent NULL checks.
There is otherwise a risk of a possible null pointer dereference.

Was largely found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
---
 arch/cris/arch-v32/drivers/axisflashmap.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/cris/arch-v32/drivers/axisflashmap.c b/arch/cris/arch-v32/drivers/axisflashmap.c
index 28dd771..e359cd7 100644
--- a/arch/cris/arch-v32/drivers/axisflashmap.c
+++ b/arch/cris/arch-v32/drivers/axisflashmap.c
@@ -487,7 +487,7 @@ static int __init init_axis_flash(void)
 
 			axis_partitions[pidx].offset = offset + ptable->offset;
 #ifdef CONFIG_ETRAX_NANDFLASH
-			if (main_mtd->type == MTD_NANDFLASH) {
+			if (main_mtd && main_mtd->type == MTD_NANDFLASH) {
 				axis_partitions[pidx].size =
 					(((ptable+1)->offset ==
 					  PARTITIONTABLE_END_MARKER) ?
-- 
1.7.10.4

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