staging: brcm80211: change interface for common rssi compute function

The function wlc_phy_rssi_compute() now uses d11rxhdr struct as
purely input parameter and returns the computed rssi value.
Reviewed-by: Roland Vossen <rvossen@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/brcm80211/brcmsmac/main.c

@@ -806,15 +806,17 @@ brcms_b_recv(struct brcms_hardware *wlc_hw, uint fifo, bool bound)
 
 	/* process each frame */
 	while ((p = head) != NULL) {
+		struct d11rxhdr *rxh;
 		head = head->prev;
 		p->prev = NULL;
 
 		wlc_rxhdr = (struct brcms_d11rxhdr *) p->data;
+		rxh = (struct d11rxhdr *)p->data;
 
 		/*
 		 * compute the RSSI from d11rxhdr and record it in wlc_rxd11hr
 		 */
-		wlc_phy_rssi_compute(wlc_hw->band->pi, wlc_rxhdr);
+		wlc_rxhdr->rssi = wlc_phy_rssi_compute(wlc_hw->band->pi, rxh);
 
 		brcms_c_recv(wlc_hw->wlc, p);
 	}

drivers/staging/brcm80211/brcmsmac/phy/phy_cmn.c

@@ -2610,10 +2610,9 @@ void wlc_phy_compute_dB(u32 *cmplx_pwr, s8 *p_cmplx_pwr_dB, u8 core)
 	}
 }
 
-void wlc_phy_rssi_compute(struct brcms_phy_pub *pih,
-			  struct brcms_d11rxhdr *wlc_rxhdr)
+int wlc_phy_rssi_compute(struct brcms_phy_pub *pih,
+			 struct d11rxhdr *rxh)
 {
-	struct d11rxhdr *rxh = &wlc_rxhdr->rxhdr;
 	int rssi = le16_to_cpu(rxh->PhyRxStatus_1) & PRXS1_JSSI_MASK;
 	uint radioid = pih->radioid;
 	struct brcms_phy *pi = (struct brcms_phy *) pih;
@@ -2650,7 +2649,7 @@ void wlc_phy_rssi_compute(struct brcms_phy_pub *pih,
 	}
 
 end:
-	wlc_rxhdr->rssi = (s8) rssi;
+	return rssi;
 }
 
 void wlc_phy_freqtrack_start(struct brcms_phy_pub *pih)

drivers/staging/brcm80211/brcmsmac/phy/phy_hal.h

@@ -212,8 +212,8 @@ extern void wlc_phy_chanspec_radio_set(struct brcms_phy_pub *ppi,
 extern u16 wlc_phy_bw_state_get(struct brcms_phy_pub *ppi);
 extern void wlc_phy_bw_state_set(struct brcms_phy_pub *ppi, u16 bw);
 
-extern void wlc_phy_rssi_compute(struct brcms_phy_pub *pih,
-				 struct brcms_d11rxhdr *wlc_rxhdr);
+extern int wlc_phy_rssi_compute(struct brcms_phy_pub *pih,
+				struct d11rxhdr *rxh);
 extern void wlc_phy_por_inform(struct brcms_phy_pub *ppi);
 extern void wlc_phy_noise_sample_intr(struct brcms_phy_pub *ppi);
 extern bool wlc_phy_bist_check_phy(struct brcms_phy_pub *ppi);