brcm80211: fmac: abstract bus_init interface function pointer

Abstract bus layer brcmf_bus_init function pointer 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

@@ -51,6 +51,8 @@ struct brcmf_bus {
 	/* interface functions pointers */
 	/* Stop bus module: clear pending frames, disable data flow */
 	void (*brcmf_bus_stop)(struct device *);
+	/* Initialize bus module: prepare for communication w/dongle */
+	int (*brcmf_bus_init)(struct device *);
 };
 
 /*
@@ -97,9 +99,6 @@ extern int brcmf_add_if(struct device *dev, int ifidx,
 /*
  * Exported from brcmf bus module (brcmf_usb, brcmf_sdio)
  */
-/* Initialize bus module: prepare for communication w/dongle */
-extern int brcmf_sdbrcm_bus_init(struct device *dev);
-
 /* Send a data frame to the dongle.  Callee disposes of txp. */
 extern int brcmf_sdbrcm_bus_txdata(struct device *dev, struct sk_buff *txp);
 

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

@@ -971,7 +971,7 @@ int brcmf_bus_start(struct device *dev)
 	brcmf_dbg(TRACE, "\n");
 
 	/* Bring up the bus */
-	ret = brcmf_sdbrcm_bus_init(dev);
+	ret = bus_if->brcmf_bus_init(dev);
 	if (ret != 0) {
 		brcmf_dbg(ERROR, "brcmf_sdbrcm_bus_init failed %d\n", ret);
 		return ret;

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

@@ -3423,7 +3423,7 @@ brcmf_sdbrcm_download_firmware(struct brcmf_sdio *bus)
 	return ret;
 }
 
-int brcmf_sdbrcm_bus_init(struct device *dev)
+static int brcmf_sdbrcm_bus_init(struct device *dev)
 {
 	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 	struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv;
@@ -3954,6 +3954,7 @@ void *brcmf_sdbrcm_probe(u32 regsva, struct brcmf_sdio_dev *sdiodev)
 
 	/* Assign bus interface call back */
 	bus->sdiodev->bus_if->brcmf_bus_stop = brcmf_sdbrcm_bus_stop;
+	bus->sdiodev->bus_if->brcmf_bus_init = brcmf_sdbrcm_bus_init;
 	/* Attach to the brcmf/OS/network interface */
 	ret = brcmf_attach(SDPCM_RESERVE, bus->sdiodev->dev);
 	if (ret != 0) {