airo: reduce stack memory footprint

Applying kernel janitors todos (reduce stack
footprint where possible) to airo wireless driver.
(Before 1124 bytes on i386, now 876)

Signed-off-by: Frank Seidel <frank@f-seidel.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c
index a3e324e0ca83..f5e2dca083cb 100644
--- a/drivers/net/wireless/airo.c
+++ b/drivers/net/wireless/airo.c
@@ -7148,11 +7148,15 @@ static int airo_get_aplist(struct net_device *dev,
 {
         struct airo_info *local = dev->ml_priv;
         struct sockaddr *address = (struct sockaddr *) extra;
-        struct iw_quality qual[IW_MAX_AP];
+        struct iw_quality *qual;
         BSSListRid BSSList;
         int i;
         int loseSync = capable(CAP_NET_ADMIN) ? 1: -1;
 
+        qual = kmalloc(IW_MAX_AP * sizeof(*qual), GFP_KERNEL);
+        if (!qual)
+                return -ENOMEM;
+
         for (i = 0; i < IW_MAX_AP; i++) {
                 u16 dBm;
                 if (readBSSListRid(local, loseSync, &BSSList))
@@ -7207,6 +7211,7 @@ static int airo_get_aplist(struct net_device *dev,
         }
         dwrq->length = i;
 
+        kfree(qual);
         return 0;
 }