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staging: rtl8188eu: use GFP_ATOMIC under spinlock 

We're holding a spinlock here so we can't do sleeping allocations.
The call tree is:
  rtw_sta_flush() <-- takes spin_lock_bh(&pstapriv->asoc_list_lock);
  --> ap_free_sta()
      --> rtw_clearstakey_cmd()

Originally these calls were rtw_zmalloc() and then we switched them to
kzalloc() in fadbe0cd52 ('staging: rtl8188eu:Remove rtw_zmalloc(),
wrapper for kzalloc()') and that made the bugs show up for my static
checker.  The original code was buggy as well but my static checker
couldn't parse it.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter 2014-07-08 13:54:23 +03:00 committed by Greg Kroah-Hartman
parent a5bde3a163
commit 11306d1f20
1 changed files with 3 additions and 3 deletions
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6
drivers/staging/rtl8188eu/core/rtw_cmd.c
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@ -1106,20 +1106,20 @@ u8 rtw_clearstakey_cmd(struct adapter *padapter, u8 *psta, u8 entry, u8 enqueue)
if (!enqueue) {
clear_cam_entry(padapter, entry);
} else {
ph2c = kzalloc(sizeof(struct cmd_obj), GFP_KERNEL);
ph2c = kzalloc(sizeof(struct cmd_obj), GFP_ATOMIC);
if (ph2c == NULL) {
res = _FAIL;
goto exit;
}
psetstakey_para = kzalloc(sizeof(struct set_stakey_parm), GFP_KERNEL);
psetstakey_para = kzalloc(sizeof(struct set_stakey_parm), GFP_ATOMIC);
if (psetstakey_para == NULL) {
kfree(ph2c);
res = _FAIL;
goto exit;
}
psetstakey_rsp = kzalloc(sizeof(struct set_stakey_rsp), GFP_KERNEL);
psetstakey_rsp = kzalloc(sizeof(struct set_stakey_rsp), GFP_ATOMIC);
if (psetstakey_rsp == NULL) {
kfree(ph2c);
kfree(psetstakey_para);