[PATCH 6/12] drivers/platform/x86: Correct redundant test

From: Julia Lawall
Date: Mon Jul 27 2009 - 12:19:40 EST


From: Julia Lawall <julia@xxxxxxx>

device and acpi_driver_data(device) were tested just a few lines above.

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/platform/x86/fujitsu-laptop.c | 3 ---
1 files changed, 0 insertions(+), 3 deletions(-)

diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index 218b9a1..5306901 100644
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -745,9 +745,6 @@ static int acpi_fujitsu_remove(struct acpi_device *device, int type)

fujitsu = acpi_driver_data(device);

- if (!device || !acpi_driver_data(device))
- return -EINVAL;
-
fujitsu->acpi_handle = NULL;

return 0;
--
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