[patch] brcmfmac: use kcalloc() to prevent integer overflow

[Dan Carpenter <dan.carpenter@oracle.com>]

The multiplication here looks like it could overflow.  I've changed it
to use kcalloc() to prevent that.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
Only needed in linux-next.  This was added in e58060723c "brcmfmac:
introduce scheduled scan support".

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
index af396e4..7983be1 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
@@ -3299,8 +3299,8 @@ brcmf_notify_sched_scan_results(struct brcmf_cfg80211_priv *cfg_priv,
 		int i;
 
 		request = kzalloc(sizeof(*request), GFP_KERNEL);
-		ssid = kzalloc(sizeof(*ssid) * result_count, GFP_KERNEL);
-		channel = kzalloc(sizeof(*channel) * result_count, GFP_KERNEL);
+		ssid = kcalloc(result_count, sizeof(*ssid), GFP_KERNEL);
+		channel = kcalloc(result_count, sizeof(*channel), GFP_KERNEL);
 		if (!request || !ssid || !channel) {
 			err = -ENOMEM;
 			goto out_err;