brcm80211: fmac: abstract ctrl frames interface function pointers

Abstract bus layer brcmf_bus_txctl/brcmf_bus_rxctl function
pointers for common layer. This patch is part of the fullmac bus
interface refactoring.
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Arend van Spriel <arend@broadcom.com>
Reviewed-by: Alwin Beukers <alwin@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/brcm80211/brcmfmac/dhd_bus.h

@@ -55,6 +55,11 @@ struct brcmf_bus {
 	int (*brcmf_bus_init)(struct device *);
 	/* Send a data frame to the dongle.  Callee disposes of txp. */
 	int (*brcmf_bus_txdata)(struct device *, struct sk_buff *);
+	/* Send/receive a control message to/from the dongle.
+	 * Expects caller to enforce a single outstanding transaction.
+	 */
+	int (*brcmf_bus_txctl)(struct device *, unsigned char *, uint);
+	int (*brcmf_bus_rxctl)(struct device *, unsigned char *, uint);
 };
 
 /*
@@ -97,16 +102,4 @@ extern int brcmf_bus_start(struct device *dev);
 
 extern int brcmf_add_if(struct device *dev, int ifidx,
 			char *name, u8 *mac_addr);
-
-/*
- * Exported from brcmf bus module (brcmf_usb, brcmf_sdio)
- */
-/* Send/receive a control message to/from the dongle.
- * Expects caller to enforce a single outstanding transaction.
- */
-extern int
-brcmf_sdbrcm_bus_txctl(struct device *dev, unsigned char *msg, uint msglen);
-
-extern int
-brcmf_sdbrcm_bus_rxctl(struct device *dev, unsigned char *msg, uint msglen);
 #endif				/* _BRCMF_BUS_H_ */

drivers/net/wireless/brcm80211/brcmfmac/dhd_cdc.c

@@ -117,8 +117,9 @@ static int brcmf_proto_cdc_msg(struct brcmf_pub *drvr)
 		len = CDC_MAX_MSG_SIZE;
 
 	/* Send request */
-	return brcmf_sdbrcm_bus_txctl(drvr->dev, (unsigned char *)&prot->msg,
-				      len);
+	return drvr->bus_if->brcmf_bus_txctl(drvr->dev,
+					     (unsigned char *)&prot->msg,
+					     len);
 }
 
 static int brcmf_proto_cdc_cmplt(struct brcmf_pub *drvr, u32 id, u32 len)
@@ -129,7 +130,7 @@ static int brcmf_proto_cdc_cmplt(struct brcmf_pub *drvr, u32 id, u32 len)
 	brcmf_dbg(TRACE, "Enter\n");
 
 	do {
-		ret = brcmf_sdbrcm_bus_rxctl(drvr->dev,
+		ret = drvr->bus_if->brcmf_bus_rxctl(drvr->dev,
 				(unsigned char *)&prot->msg,
 				len + sizeof(struct brcmf_proto_cdc_dcmd));
 		if (ret < 0)

drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c

@@ -2892,7 +2892,7 @@ static int brcmf_tx_frame(struct brcmf_sdio *bus, u8 *frame, u16 len)
 	return ret;
 }
 
-int
+static int
 brcmf_sdbrcm_bus_txctl(struct device *dev, unsigned char *msg, uint msglen)
 {
 	u8 *frame;
@@ -3010,7 +3010,7 @@ brcmf_sdbrcm_bus_txctl(struct device *dev, unsigned char *msg, uint msglen)
 	return ret ? -EIO : 0;
 }
 
-int
+static int
 brcmf_sdbrcm_bus_rxctl(struct device *dev, unsigned char *msg, uint msglen)
 {
 	int timeleft;
@@ -3956,6 +3956,8 @@ void *brcmf_sdbrcm_probe(u32 regsva, struct brcmf_sdio_dev *sdiodev)
 	bus->sdiodev->bus_if->brcmf_bus_stop = brcmf_sdbrcm_bus_stop;
 	bus->sdiodev->bus_if->brcmf_bus_init = brcmf_sdbrcm_bus_init;
 	bus->sdiodev->bus_if->brcmf_bus_txdata = brcmf_sdbrcm_bus_txdata;
+	bus->sdiodev->bus_if->brcmf_bus_txctl = brcmf_sdbrcm_bus_txctl;
+	bus->sdiodev->bus_if->brcmf_bus_rxctl = brcmf_sdbrcm_bus_rxctl;
 	/* Attach to the brcmf/OS/network interface */
 	ret = brcmf_attach(SDPCM_RESERVE, bus->sdiodev->dev);
 	if (ret != 0) {