[PATCH 2/2] staging: remove null checks before kree(x); x = NULL;

From: Ilia Mirkin
Date: Tue Feb 22 2011 - 03:57:23 EST

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This patch was generated by the following semantic patch:
// <smpl>
@@
expression E;
@@

- if (E != NULL) { kfree(E); E = NULL; }
+ kfree(E);
+ E = NULL;
// </smpl>

(And there was one instance in bcm/CmHost.c where I removed the NULL
assignment since that variable was getting immediately reassigned.)

Signed-off-by: Ilia Mirkin <imirkin@xxxxxxxxxxxx>
---
drivers/staging/ath6kl/os/linux/ar6k_pal.c | 6 +--
drivers/staging/ath6kl/os/linux/hci_bridge.c | 6 +--
drivers/staging/bcm/CmHost.c | 6 +--
drivers/staging/brcm80211/brcmfmac/dhd_sdio.c | 6 +--
drivers/staging/brcm80211/brcmsmac/wlc_alloc.c | 41 +++++++-------------
drivers/staging/brcm80211/brcmsmac/wlc_bmac.c | 6 +--
drivers/staging/brcm80211/brcmsmac/wlc_mac80211.c | 12 ++----
drivers/staging/comedi/drivers/usbdux.c | 8 +---
drivers/staging/cx25821/cx25821-audio-upstream.c | 6 +--
.../staging/cx25821/cx25821-video-upstream-ch2.c | 6 +--
drivers/staging/cx25821/cx25821-video-upstream.c | 6 +--
drivers/staging/keucr/ms.c | 14 ++-----
.../staging/rtl8192e/ieee80211/ieee80211_module.c | 7 +--
drivers/staging/rtl8192e/ieee80211/ieee80211_rx.c | 7 +--
.../staging/rtl8192e/ieee80211/ieee80211_softmac.c | 7 +--
.../staging/rtl8192u/ieee80211/ieee80211_module.c | 7 +--
drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c | 7 +--
.../staging/rtl8192u/ieee80211/ieee80211_softmac.c | 7 +--
drivers/staging/rtl8192u/r8192U_core.c | 31 +++++----------
drivers/staging/speakup/main.c | 6 +--
drivers/staging/wlan-ng/hfa384x_usb.c | 6 +--
21 files changed, 65 insertions(+), 143 deletions(-)

diff --git a/drivers/staging/ath6kl/os/linux/ar6k_pal.c b/drivers/staging/ath6kl/os/linux/ar6k_pal.c
index 831b2e3..34d4dc9 100644
--- a/drivers/staging/ath6kl/os/linux/ar6k_pal.c
+++ b/drivers/staging/ath6kl/os/linux/ar6k_pal.c
@@ -260,10 +260,8 @@ static void bt_cleanup_hci_pal(ar6k_hci_pal_info_t *pHciPalInfo)
}
}

- if (pHciPalInfo->hdev != NULL) {
- kfree(pHciPalInfo->hdev);
- pHciPalInfo->hdev = NULL;
- }
+ kfree(pHciPalInfo->hdev);
+ pHciPalInfo->hdev = NULL;
}

/*********************************************************
diff --git a/drivers/staging/ath6kl/os/linux/hci_bridge.c b/drivers/staging/ath6kl/os/linux/hci_bridge.c
index f170382..3c886f3 100644
--- a/drivers/staging/ath6kl/os/linux/hci_bridge.c
+++ b/drivers/staging/ath6kl/os/linux/hci_bridge.c
@@ -929,10 +929,8 @@ static void bt_cleanup_hci(AR6K_HCI_BRIDGE_INFO *pHcidevInfo)
}
}

- if (pHcidevInfo->pBtStackHCIDev != NULL) {
- kfree(pHcidevInfo->pBtStackHCIDev);
- pHcidevInfo->pBtStackHCIDev = NULL;
- }
+ kfree(pHcidevInfo->pBtStackHCIDev);
+ pHcidevInfo->pBtStackHCIDev = NULL;
}

static int bt_register_hci(AR6K_HCI_BRIDGE_INFO *pHcidevInfo)
diff --git a/drivers/staging/bcm/CmHost.c b/drivers/staging/bcm/CmHost.c
index 5ac4582..51d37b0 100644
--- a/drivers/staging/bcm/CmHost.c
+++ b/drivers/staging/bcm/CmHost.c
@@ -974,11 +974,7 @@ static VOID CopyToAdapter( register PMINI_ADAPTER Adapter, /**<Pointer to the A
!(psfLocalSet->u8RequesttransmissionPolicy &
MASK_DISABLE_HEADER_SUPPRESSION);

- if(Adapter->PackInfo[uiSearchRuleIndex].pstSFIndication)
- {
- kfree(Adapter->PackInfo[uiSearchRuleIndex].pstSFIndication);
- Adapter->PackInfo[uiSearchRuleIndex].pstSFIndication = NULL;
- }
+ kfree(Adapter->PackInfo[uiSearchRuleIndex].pstSFIndication);
Adapter->PackInfo[uiSearchRuleIndex].pstSFIndication = pstAddIndication;

//Re Sort the SF list in PackInfo according to Traffic Priority
diff --git a/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c b/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c
index 061cc82..a2751ff 100644
--- a/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c
+++ b/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c
@@ -5568,10 +5568,8 @@ static void dhdsdio_release_malloc(dhd_bus_t *bus, struct osl_info *osh)
bus->rxlen = 0;
}

- if (bus->databuf) {
- kfree(bus->databuf);
- bus->databuf = NULL;
- }
+ kfree(bus->databuf);
+ bus->databuf = NULL;
}

static void dhdsdio_release_dongle(dhd_bus_t *bus, struct osl_info *osh)
diff --git a/drivers/staging/brcm80211/brcmsmac/wlc_alloc.c b/drivers/staging/brcm80211/brcmsmac/wlc_alloc.c
index b7934ed..9e1adcd 100644
--- a/drivers/staging/brcm80211/brcmsmac/wlc_alloc.c
+++ b/drivers/staging/brcm80211/brcmsmac/wlc_alloc.c
@@ -140,10 +140,8 @@ void wlc_bsscfg_mfree(struct osl_info *osh, wlc_bsscfg_t *cfg)
if (cfg == NULL)
return;

- if (cfg->maclist) {
- kfree(cfg->maclist);
- cfg->maclist = NULL;
- }
+ kfree(cfg->maclist);
+ cfg->maclist = NULL;

if (cfg->current_bss != NULL) {
wlc_bss_info_t *current_bss = cfg->current_bss;
@@ -306,15 +304,11 @@ void wlc_detach_mfree(struct wlc_info *wlc, struct osl_info *osh)
if (wlc == NULL)
return;

- if (wlc->modulecb) {
- kfree(wlc->modulecb);
- wlc->modulecb = NULL;
- }
+ kfree(wlc->modulecb);
+ wlc->modulecb = NULL;

- if (wlc->default_bss) {
- kfree(wlc->default_bss);
- wlc->default_bss = NULL;
- }
+ kfree(wlc->default_bss);
+ wlc->default_bss = NULL;
if (wlc->cfg) {
wlc_bsscfg_mfree(osh, wlc->cfg);
wlc->cfg = NULL;
@@ -326,22 +320,17 @@ void wlc_detach_mfree(struct wlc_info *wlc, struct osl_info *osh)
}

kfree(wlc->wsec_def_keys[0]);
- if (wlc->protection) {
- kfree(wlc->protection);
- wlc->protection = NULL;
- }
+ kfree(wlc->protection);
+ wlc->protection = NULL;

- if (wlc->stf) {
- kfree(wlc->stf);
- wlc->stf = NULL;
- }
+ kfree(wlc->stf);
+ wlc->stf = NULL;

kfree(wlc->bandstate[0]);

if (wlc->corestate) {
- if (wlc->corestate->macstat_snapshot) {
- kfree(wlc->corestate->macstat_snapshot); wlc->corestate->macstat_snapshot = NULL;
- }
+ kfree(wlc->corestate->macstat_snapshot);
+ wlc->corestate->macstat_snapshot = NULL;
kfree(wlc->corestate);
wlc->corestate = NULL;
}
@@ -353,10 +342,8 @@ void wlc_detach_mfree(struct wlc_info *wlc, struct osl_info *osh)
}

if (wlc->hw) {
- if (wlc->hw->bandstate[0]) {
- kfree(wlc->hw->bandstate[0]);
- wlc->hw->bandstate[0] = NULL;
- }
+ kfree(wlc->hw->bandstate[0]);
+ wlc->hw->bandstate[0] = NULL;

/* free hw struct */
kfree(wlc->hw);
diff --git a/drivers/staging/brcm80211/brcmsmac/wlc_bmac.c b/drivers/staging/brcm80211/brcmsmac/wlc_bmac.c
index ac068cd..7aeddaf 100644
--- a/drivers/staging/brcm80211/brcmsmac/wlc_bmac.c
+++ b/drivers/staging/brcm80211/brcmsmac/wlc_bmac.c
@@ -1045,10 +1045,8 @@ int wlc_bmac_detach(struct wlc_info *wlc)
wlc_phy_shim_detach(wlc_hw->physhim);

/* free vars */
- if (wlc_hw->vars) {
- kfree(wlc_hw->vars);
- wlc_hw->vars = NULL;
- }
+ kfree(wlc_hw->vars);
+ wlc_hw->vars = NULL;

if (wlc_hw->sih) {
si_detach(wlc_hw->sih);
diff --git a/drivers/staging/brcm80211/brcmsmac/wlc_mac80211.c b/drivers/staging/brcm80211/brcmsmac/wlc_mac80211.c
index 91a2de2..0c3f791 100644
--- a/drivers/staging/brcm80211/brcmsmac/wlc_mac80211.c
+++ b/drivers/staging/brcm80211/brcmsmac/wlc_mac80211.c
@@ -2175,10 +2175,8 @@ uint wlc_detach(struct wlc_info *wlc)

#ifdef BCMDBG
- if (wlc->country_ie_override) {
- kfree(wlc->country_ie_override);
- wlc->country_ie_override = NULL;
- }
+ kfree(wlc->country_ie_override);
+ wlc->country_ie_override = NULL;
#endif /* BCMDBG */

{
@@ -8024,10 +8022,8 @@ static void wlc_process_eventq(void *arg)
while ((etmp = wlc_eventq_deq(wlc->eventq))) {
/* Perform OS specific event processing */
wl_event(wlc->wl, etmp->event.ifname, etmp);
- if (etmp->data) {
- kfree(etmp->data);
- etmp->data = NULL;
- }
+ kfree(etmp->data);
+ etmp->data = NULL;
wlc_event_free(wlc->eventq, etmp);
}
}
diff --git a/drivers/staging/comedi/drivers/usbdux.c b/drivers/staging/comedi/drivers/usbdux.c
index 696ee04..be93c30 100644
--- a/drivers/staging/comedi/drivers/usbdux.c
+++ b/drivers/staging/comedi/drivers/usbdux.c
@@ -2265,12 +2265,8 @@ static void tidy_up(struct usbduxsub *usbduxsub_tmp)
usbduxsub_unlink_OutURBs(usbduxsub_tmp);
}
for (i = 0; i < usbduxsub_tmp->numOfOutBuffers; i++) {
- if (usbduxsub_tmp->urbOut[i]->transfer_buffer) {
- kfree(usbduxsub_tmp->
- urbOut[i]->transfer_buffer);
- usbduxsub_tmp->urbOut[i]->transfer_buffer =
- NULL;
- }
+ kfree(usbduxsub_tmp->urbOut[i]->transfer_buffer);
+ usbduxsub_tmp->urbOut[i]->transfer_buffer = NULL;
if (usbduxsub_tmp->urbOut[i]) {
usb_kill_urb(usbduxsub_tmp->urbOut[i]);
usb_free_urb(usbduxsub_tmp->urbOut[i]);
diff --git a/drivers/staging/cx25821/cx25821-audio-upstream.c b/drivers/staging/cx25821/cx25821-audio-upstream.c
index be657df..0f9ca77 100644
--- a/drivers/staging/cx25821/cx25821-audio-upstream.c
+++ b/drivers/staging/cx25821/cx25821-audio-upstream.c
@@ -244,10 +244,8 @@ void cx25821_stop_upstream_audio(struct cx25821_dev *dev)
dev->_audioframe_count = 0;
dev->_audiofile_status = END_OF_FILE;

- if (dev->_irq_audio_queues) {
- kfree(dev->_irq_audio_queues);
- dev->_irq_audio_queues = NULL;
- }
+ kfree(dev->_irq_audio_queues);
+ dev->_irq_audio_queues = NULL;

kfree(dev->_audiofilename);
}
diff --git a/drivers/staging/cx25821/cx25821-video-upstream-ch2.c b/drivers/staging/cx25821/cx25821-video-upstream-ch2.c
index 586739d..655357d 100644
--- a/drivers/staging/cx25821/cx25821-video-upstream-ch2.c
+++ b/drivers/staging/cx25821/cx25821-video-upstream-ch2.c
@@ -234,10 +234,8 @@ void cx25821_stop_upstream_video_ch2(struct cx25821_dev *dev)
dev->_frame_count_ch2 = 0;
dev->_file_status_ch2 = END_OF_FILE;

- if (dev->_irq_queues_ch2) {
- kfree(dev->_irq_queues_ch2);
- dev->_irq_queues_ch2 = NULL;
- }
+ kfree(dev->_irq_queues_ch2);
+ dev->_irq_queues_ch2 = NULL;

kfree(dev->_filename_ch2);

diff --git a/drivers/staging/cx25821/cx25821-video-upstream.c b/drivers/staging/cx25821/cx25821-video-upstream.c
index 25bfd8a..eb0172b 100644
--- a/drivers/staging/cx25821/cx25821-video-upstream.c
+++ b/drivers/staging/cx25821/cx25821-video-upstream.c
@@ -279,10 +279,8 @@ void cx25821_stop_upstream_video_ch1(struct cx25821_dev *dev)
dev->_frame_count = 0;
dev->_file_status = END_OF_FILE;

- if (dev->_irq_queues) {
- kfree(dev->_irq_queues);
- dev->_irq_queues = NULL;
- }
+ kfree(dev->_irq_queues);
+ dev->_irq_queues = NULL;

kfree(dev->_filename);

diff --git a/drivers/staging/keucr/ms.c b/drivers/staging/keucr/ms.c
index 7779d3b..b8ced85 100644
--- a/drivers/staging/keucr/ms.c
+++ b/drivers/staging/keucr/ms.c
@@ -322,17 +322,11 @@ void MS_LibFreeWriteBuf(struct us_data *us)
//----- MS_LibFreeLogicalMap() ---------------------------------------
int MS_LibFreeLogicalMap(struct us_data *us)
{
- if (us->MS_Lib.Phy2LogMap)
- {
- kfree(us->MS_Lib.Phy2LogMap);
- us->MS_Lib.Phy2LogMap = NULL;
- }
+ kfree(us->MS_Lib.Phy2LogMap);
+ us->MS_Lib.Phy2LogMap = NULL;

- if (us->MS_Lib.Log2PhyMap)
- {
- kfree(us->MS_Lib.Log2PhyMap);
- us->MS_Lib.Log2PhyMap = NULL;
- }
+ kfree(us->MS_Lib.Log2PhyMap);
+ us->MS_Lib.Log2PhyMap = NULL;

return 0;
}
diff --git a/drivers/staging/rtl8192e/ieee80211/ieee80211_module.c b/drivers/staging/rtl8192e/ieee80211/ieee80211_module.c
index 67bcd41..663b0b8 100644
--- a/drivers/staging/rtl8192e/ieee80211/ieee80211_module.c
+++ b/drivers/staging/rtl8192e/ieee80211/ieee80211_module.c
@@ -195,11 +195,8 @@ void free_ieee80211(struct net_device *dev)
{
struct ieee80211_device *ieee = netdev_priv(dev);
int i;
- if (ieee->pHTInfo != NULL)
- {
- kfree(ieee->pHTInfo);
- ieee->pHTInfo = NULL;
- }
+ kfree(ieee->pHTInfo);
+ ieee->pHTInfo = NULL;
RemoveAllTS(ieee);
ieee80211_softmac_free(ieee);
del_timer_sync(&ieee->crypt_deinit_timer);
diff --git a/drivers/staging/rtl8192e/ieee80211/ieee80211_rx.c b/drivers/staging/rtl8192e/ieee80211/ieee80211_rx.c
index e2eac7c..57acb3f 100644
--- a/drivers/staging/rtl8192e/ieee80211/ieee80211_rx.c
+++ b/drivers/staging/rtl8192e/ieee80211/ieee80211_rx.c
@@ -1411,11 +1411,8 @@ int ieee80211_rtl_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
return 1;

rx_dropped:
- if (rxb != NULL)
- {
- kfree(rxb);
- rxb = NULL;
- }
+ kfree(rxb);
+ rxb = NULL;
stats->rx_dropped++;

/* Returning 0 indicates to caller that we have not handled the SKB--
diff --git a/drivers/staging/rtl8192e/ieee80211/ieee80211_softmac.c b/drivers/staging/rtl8192e/ieee80211/ieee80211_softmac.c
index 2640a4f..0de6867 100644
--- a/drivers/staging/rtl8192e/ieee80211/ieee80211_softmac.c
+++ b/drivers/staging/rtl8192e/ieee80211/ieee80211_softmac.c
@@ -2829,11 +2829,8 @@ void ieee80211_softmac_free(struct ieee80211_device *ieee)
{
down(&ieee->wx_sem);
#ifdef ENABLE_DOT11D
- if(NULL != ieee->pDot11dInfo)
- {
- kfree(ieee->pDot11dInfo);
- ieee->pDot11dInfo = NULL;
- }
+ kfree(ieee->pDot11dInfo);
+ ieee->pDot11dInfo = NULL;
#endif
del_timer_sync(&ieee->associate_timer);

diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_module.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_module.c
index 7455264..fe978f3 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_module.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_module.c
@@ -198,11 +198,8 @@ void free_ieee80211(struct net_device *dev)
int i;
//struct list_head *p, *q;
// del_timer_sync(&ieee->SwBwTimer);
- if (ieee->pHTInfo != NULL)
- {
- kfree(ieee->pHTInfo);
- ieee->pHTInfo = NULL;
- }
+ kfree(ieee->pHTInfo);
+ ieee->pHTInfo = NULL;
RemoveAllTS(ieee);
ieee80211_softmac_free(ieee);
del_timer_sync(&ieee->crypt_deinit_timer);
diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c
index 1ea8da3..498b520 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c
@@ -1384,11 +1384,8 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
return 1;

rx_dropped:
- if (rxb != NULL)
- {
- kfree(rxb);
- rxb = NULL;
- }
+ kfree(rxb);
+ rxb = NULL;
stats->rx_dropped++;

/* Returning 0 indicates to caller that we have not handled the SKB--
diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
index 20f8c34..4992d63 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
@@ -2755,11 +2755,8 @@ void ieee80211_softmac_init(struct ieee80211_device *ieee)
void ieee80211_softmac_free(struct ieee80211_device *ieee)
{
down(&ieee->wx_sem);
- if(NULL != ieee->pDot11dInfo)
- {
- kfree(ieee->pDot11dInfo);
- ieee->pDot11dInfo = NULL;
- }
+ kfree(ieee->pDot11dInfo);
+ ieee->pDot11dInfo = NULL;
del_timer_sync(&ieee->associate_timer);

cancel_delayed_work(&ieee->associate_retry_wq);
diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c
index ae4f2b9..8d4142a 100644
--- a/drivers/staging/rtl8192u/r8192U_core.c
+++ b/drivers/staging/rtl8192u/r8192U_core.c
@@ -2276,10 +2276,8 @@ void rtl8192_usb_deleteendpoints(struct net_device *dev)
kfree(priv->rx_urb);
priv->rx_urb = NULL;
}
- if(priv->oldaddr){
- kfree(priv->oldaddr);
- priv->oldaddr = NULL;
- }
+ kfree(priv->oldaddr);
+ priv->oldaddr = NULL;
if (priv->pp_rxskb) {
kfree(priv->pp_rxskb);
priv->pp_rxskb = 0;
@@ -2304,14 +2302,10 @@ void rtl8192_usb_deleteendpoints(struct net_device *dev)

}
#else
- if(priv->rx_urb){
- kfree(priv->rx_urb);
- priv->rx_urb = NULL;
- }
- if(priv->oldaddr){
- kfree(priv->oldaddr);
- priv->oldaddr = NULL;
- }
+ kfree(priv->rx_urb);
+ priv->rx_urb = NULL;
+ kfree(priv->oldaddr);
+ priv->oldaddr = NULL;
if (priv->pp_rxskb) {
kfree(priv->pp_rxskb);
priv->pp_rxskb = 0;
@@ -5828,10 +5822,8 @@ static int __devinit rtl8192_usb_probe(struct usb_interface *intf,

fail2:
rtl8192_down(dev);
- if (priv->pFirmware) {
- kfree(priv->pFirmware);
- priv->pFirmware = NULL;
- }
+ kfree(priv->pFirmware);
+ priv->pFirmware = NULL;
rtl8192_usb_deleteendpoints(dev);
destroy_workqueue(priv->priv_wq);
mdelay(10);
@@ -5869,11 +5861,8 @@ static void __devexit rtl8192_usb_disconnect(struct usb_interface *intf)
rtl8192_proc_remove_one(dev);

rtl8192_down(dev);
- if (priv->pFirmware)
- {
- kfree(priv->pFirmware);
- priv->pFirmware = NULL;
- }
+ kfree(priv->pFirmware);
+ priv->pFirmware = NULL;
// priv->rf_close(dev);
// rtl8192_SetRFPowerState(dev, eRfOff);
rtl8192_usb_deleteendpoints(dev);
diff --git a/drivers/staging/speakup/main.c b/drivers/staging/speakup/main.c
index cd981a1..42fcf7e 100644
--- a/drivers/staging/speakup/main.c
+++ b/drivers/staging/speakup/main.c
@@ -1305,10 +1305,8 @@ void speakup_deallocate(struct vc_data *vc)
int vc_num;

vc_num = vc->vc_num;
- if (speakup_console[vc_num] != NULL) {
- kfree(speakup_console[vc_num]);
- speakup_console[vc_num] = NULL;
- }
+ kfree(speakup_console[vc_num]);
+ speakup_console[vc_num] = NULL;
}

static u_char is_cursor;
diff --git a/drivers/staging/wlan-ng/hfa384x_usb.c b/drivers/staging/wlan-ng/hfa384x_usb.c
index a6efc03..7843dfd 100644
--- a/drivers/staging/wlan-ng/hfa384x_usb.c
+++ b/drivers/staging/wlan-ng/hfa384x_usb.c
@@ -612,10 +612,8 @@ void hfa384x_destroy(hfa384x_t *hw)
hfa384x_drvr_stop(hw);
hw->state = HFA384x_STATE_PREINIT;

- if (hw->scanresults) {
- kfree(hw->scanresults);
- hw->scanresults = NULL;
- }
+ kfree(hw->scanresults);
+ hw->scanresults = NULL;

/* Now to clean out the auth queue */
while ((skb = skb_dequeue(&hw->authq)))
--
1.7.3.4

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