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staging: rtl8188eu: core: fix null dereference on exit path in rtw_mlme.c

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If adapter is null, null dereference may occur. This patch fixes it.
The following Coccinelle semantic patch was used to find the case.

@@
expression E, E1;
identifier f;
statement S1,S2,S3;
@@

* if (E == NULL)
{
 ... when != if (E == NULL) S1 else S2
     when != E = E1
* E->f
 ... when any
 return ...;
}
else S3

Signed-off-by: Jiayi Ye <yejiayily@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiayi Ye 2014-10-23 22:05:10 +08:00 committed by Greg Kroah-Hartman
parent 861374fcf3
commit 7424a06090
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/rtl8188eu/core/rtw_mlme.c
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@ -1437,7 +1437,7 @@ void rtw_dynamic_check_timer_handlder(void *function_context)
struct registry_priv *pregistrypriv = &adapter->registrypriv;
if (!adapter)
goto exit;
return;
if (!adapter->hw_init_completed)
goto exit;
if ((adapter->bDriverStopped) || (adapter->bSurpriseRemoved))