staging: brcm80211: bugfix for fullmac return codes

Some code paths in the fullmac driver did not return a negative value
on error. This has been corrected.

Cc: devel@linuxdriverproject.org
Cc: linux-wireless@vger.kernel.org
Cc: Brett Rudley <brudley@broadcom.com>
Cc: Henry Ptasinski <henryp@broadcom.com>
Cc: Roland Vossen <rvossen@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/brcm80211/brcmfmac/dhd_common.c

@@ -432,7 +432,7 @@ int dhd_ioctl(dhd_pub_t *dhd_pub, dhd_ioctl_t *ioc, void *buf, uint buflen)
 
 	case DHD_GET_VERSION:
 		if (buflen < sizeof(int))
-			bcmerror = BCME_BUFTOOSHORT;
+			bcmerror = -BCME_BUFTOOSHORT;
 		else
 			*(int *)buf = DHD_IOCTL_VERSION;
 		break;

drivers/staging/brcm80211/brcmfmac/dhd_linux.c

@@ -1699,7 +1699,7 @@ static int dhd_ioctl_entry(struct net_device *net, struct ifreq *ifr, int cmd)
 
 	/* Copy the ioc control structure part of ioctl request */
 	if (copy_from_user(&ioc, ifr->ifr_data, sizeof(wl_ioctl_t))) {
-		bcmerror = BCME_BADADDR;
+		bcmerror = -BCME_BADADDR;
 		goto done;
 	}
 
@@ -1715,11 +1715,11 @@ static int dhd_ioctl_entry(struct net_device *net, struct ifreq *ifr, int cmd)
 		{
 			buf = kmalloc(buflen, GFP_ATOMIC);
 			if (!buf) {
-				bcmerror = BCME_NOMEM;
+				bcmerror = -BCME_NOMEM;
 				goto done;
 			}
 			if (copy_from_user(buf, ioc.buf, buflen)) {
-				bcmerror = BCME_BADADDR;
+				bcmerror = -BCME_BADADDR;
 				goto done;
 			}
 		}
@@ -1728,12 +1728,12 @@ static int dhd_ioctl_entry(struct net_device *net, struct ifreq *ifr, int cmd)
 	/* To differentiate between wl and dhd read 4 more byes */
 	if ((copy_from_user(&driver, (char *)ifr->ifr_data + sizeof(wl_ioctl_t),
 			    sizeof(uint)) != 0)) {
-		bcmerror = BCME_BADADDR;
+		bcmerror = -BCME_BADADDR;
 		goto done;
 	}
 
 	if (!capable(CAP_NET_ADMIN)) {
-		bcmerror = BCME_EPERM;
+		bcmerror = -BCME_EPERM;
 		goto done;
 	}