[PATCH] staging: rtl8192u: move stats_IndicateArray off stack

From: Arnd Bergmann
Date: Thu Feb 02 2017 - 09:39:06 EST


Putting 128 pointers on the stack is rather wasteful, in particular
on 64-bit architectures:

drivers/staging/rtl8192u/ieee80211/rtl819x_TSProc.c: In function 'RxPktPendingTimeout':
drivers/staging/rtl8192u/ieee80211/rtl819x_TSProc.c:92:1: warning: the frame size of 1072 bytes is larger than 1024 bytes [-Wframe-larger-than=]

The rtl8192e driver has the exact same function, except that stores the
array in its 'ieee' structure. Let's do it the same way here for consistency.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
drivers/staging/rtl8192u/ieee80211/ieee80211.h | 1 +
drivers/staging/rtl8192u/ieee80211/rtl819x_TSProc.c | 5 ++---
2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211.h b/drivers/staging/rtl8192u/ieee80211/ieee80211.h
index 17e985a1babf..10bb23739748 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211.h
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211.h
@@ -1894,6 +1894,7 @@ struct ieee80211_device {
//u32 STA_EDCA_PARAM[4];
//CHANNEL_ACCESS_SETTING ChannelAccessSetting;

+ struct ieee80211_rxb *stats_IndicateArray[REORDER_WIN_SIZE];

/* Callback functions */
void (*set_security)(struct net_device *dev,
diff --git a/drivers/staging/rtl8192u/ieee80211/rtl819x_TSProc.c b/drivers/staging/rtl8192u/ieee80211/rtl819x_TSProc.c
index 6033502eff3d..b9ff8fec2edf 100644
--- a/drivers/staging/rtl8192u/ieee80211/rtl819x_TSProc.c
+++ b/drivers/staging/rtl8192u/ieee80211/rtl819x_TSProc.c
@@ -31,7 +31,6 @@ static void RxPktPendingTimeout(unsigned long data)

//u32 flags = 0;
unsigned long flags = 0;
- struct ieee80211_rxb *stats_IndicateArray[REORDER_WIN_SIZE];
u8 index = 0;
bool bPktInBuf = false;

@@ -55,7 +54,7 @@ static void RxPktPendingTimeout(unsigned long data)
pRxTs->RxIndicateSeq = (pRxTs->RxIndicateSeq + 1) % 4096;

IEEE80211_DEBUG(IEEE80211_DL_REORDER,"RxPktPendingTimeout(): IndicateSeq: %d\n", pReorderEntry->SeqNum);
- stats_IndicateArray[index] = pReorderEntry->prxb;
+ ieee->stats_IndicateArray[index] = pReorderEntry->prxb;
index++;

list_add_tail(&pReorderEntry->List, &ieee->RxReorder_Unused_List);
@@ -79,7 +78,7 @@ static void RxPktPendingTimeout(unsigned long data)
spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
return;
}
- ieee80211_indicate_packets(ieee, stats_IndicateArray, index);
+ ieee80211_indicate_packets(ieee, ieee->stats_IndicateArray, index);
}

if(bPktInBuf && (pRxTs->RxTimeoutIndicateSeq==0xffff))
--
2.9.0