[PATCH 3/12] drivers/mtd: Correct redundant test

From: Julia Lawall
Date: Mon Jul 27 2009 - 12:16:34 EST


From: Julia Lawall <julia@xxxxxxx>

info has already been tested. It seems that this test should be on the
recently returned value mtd_list.

A simplified version of the semantic match that finds this problem is as
follows: (http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@r exists@
local idexpression x;
expression E;
@@

if (x == NULL || ...) { ... when forall
return ...; }
... when != \(x=E\|x--\|x++\|--x\|++x\|x-=E\|x+=E\|x|=E\|x&=E\|&x\)
(
*x == NULL
|
*x != NULL
)
// </smpl>

Signed-off-by: Julia Lawall <julia@xxxxxxx>

---
drivers/mtd/maps/physmap_of.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c
index 39d357b..2cc0b0d 100644
--- a/drivers/mtd/maps/physmap_of.c
+++ b/drivers/mtd/maps/physmap_of.c
@@ -215,7 +215,7 @@ static int __devinit of_flash_probe(struct of_device *dev,
goto err_out;

mtd_list = kzalloc(sizeof(struct mtd_info) * count, GFP_KERNEL);
- if (!info)
+ if (!mtd_list)
goto err_out;

dev_set_drvdata(&dev->dev, info);
--
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