staging: brcm80211: removed unused fullmac spinlock

Usage of spinlock depended on module parameters that are going to
be removed in a subsequent patch. Parameter wlc->threads_only is
always 'true'.

Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Arend van Spriel <arend@broadcom.com>
Reviewed-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c b/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c
index 0def6e3..198d544 100644 (file)
--- a/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c
+++ b/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c
@@ -655,7 +655,6 @@ struct brcmf_bus {
 
        bool threads_only;
        struct semaphore sdsem;
-       spinlock_t sdlock;
 
        const char *fw_name;
        const struct firmware *firmware;
@@ -812,22 +811,6 @@ static void brcmf_sdbrcm_pktfree2(struct brcmf_bus *bus, struct sk_buff *pkt)
                brcmu_pkt_buf_free_skb(pkt);
 }
 
-static void brcmf_sdbrcm_sdlock(struct brcmf_bus *bus)
-{
-       if (bus->threads_only)
-               down(&bus->sdsem);
-       else
-               spin_lock_bh(&bus->sdlock);
-}
-
-static void brcmf_sdbrcm_sdunlock(struct brcmf_bus *bus)
-{
-       if (bus->threads_only)
-               up(&bus->sdsem);
-       else
-               spin_unlock_bh(&bus->sdlock);
-}
-
 /* Turn backplane clock on or off */
 static int brcmf_sdbrcm_htclk(struct brcmf_bus *bus, bool on, bool pendok)
 {
@@ -1622,9 +1605,9 @@ static u8 brcmf_sdbrcm_rxglom(struct brcmf_bus *bus, u8 rxseq)
 #endif                         /* BCMDBG */
                }
                if (num) {
-                       brcmf_sdbrcm_sdunlock(bus);
+                       up(&bus->sdsem);
                        brcmf_rx_frame(bus->drvr, ifidx, save_pfirst, num);
-                       brcmf_sdbrcm_sdlock(bus);
+                       down(&bus->sdsem);
                }
 
                bus->rxglomframes++;
@@ -2225,9 +2208,9 @@ deliver:
                }
 
                /* Unlock during rx call */
-               brcmf_sdbrcm_sdunlock(bus);
+               up(&bus->sdsem);
                brcmf_rx_frame(bus->drvr, ifidx, pkt, 1);
-               brcmf_sdbrcm_sdlock(bus);
+               down(&bus->sdsem);
        }
        rxcount = maxframes - rxleft;
 #ifdef BCMDBG
@@ -2257,10 +2240,10 @@ brcmf_sdbrcm_send_buf(struct brcmf_bus *bus, u32 addr, uint fn, uint flags,
 static void
 brcmf_sdbrcm_wait_for_event(struct brcmf_bus *bus, bool *lockvar)
 {
-       brcmf_sdbrcm_sdunlock(bus);
+       up(&bus->sdsem);
        wait_event_interruptible_timeout(bus->ctrl_wait,
                                         (*lockvar == false), HZ * 2);
-       brcmf_sdbrcm_sdlock(bus);
+       down(&bus->sdsem);
        return;
 }
 
@@ -2407,9 +2390,9 @@ static int brcmf_sdbrcm_txpkt(struct brcmf_bus *bus, struct sk_buff *pkt,
 done:
        /* restore pkt buffer pointer before calling tx complete routine */
        skb_pull(pkt, SDPCM_HDRLEN + pad);
-       brcmf_sdbrcm_sdunlock(bus);
+       up(&bus->sdsem);
        brcmf_txcomplete(bus->drvr, pkt, ret != 0);
-       brcmf_sdbrcm_sdlock(bus);
+       down(&bus->sdsem);
 
        if (free_pkt)
                brcmu_pkt_buf_free_skb(pkt);
@@ -2487,7 +2470,7 @@ static bool brcmf_sdbrcm_dpc(struct brcmf_bus *bus)
        /* Start with leftover status bits */
        intstatus = bus->intstatus;
 
-       brcmf_sdbrcm_sdlock(bus);
+       down(&bus->sdsem);
 
        /* If waiting for HTAVAIL, check status */
        if (bus->clkstate == CLK_PENDING) {
@@ -2711,7 +2694,7 @@ clkwait:
                brcmf_sdbrcm_clkctl(bus, CLK_NONE, false);
        }
 
-       brcmf_sdbrcm_sdunlock(bus);
+       up(&bus->sdsem);
 
        return resched;
 }
@@ -3048,7 +3031,7 @@ brcmf_sdbrcm_bus_txctl(struct brcmf_bus *bus, unsigned char *msg, uint msglen)
        /* precondition: IS_ALIGNED((unsigned long)frame, 2) */
 
        /* Need to lock here to protect txseq and SDIO tx calls */
-       brcmf_sdbrcm_sdlock(bus);
+       down(&bus->sdsem);
 
        bus_wake(bus);
 
@@ -3110,7 +3093,7 @@ brcmf_sdbrcm_bus_txctl(struct brcmf_bus *bus, unsigned char *msg, uint msglen)
                brcmf_sdbrcm_clkctl(bus, CLK_NONE, true);
        }
 
-       brcmf_sdbrcm_sdunlock(bus);
+       up(&bus->sdsem);
 
        if (ret)
                bus->drvr->tx_ctlerrs++;
@@ -3135,11 +3118,11 @@ brcmf_sdbrcm_bus_rxctl(struct brcmf_bus *bus, unsigned char *msg, uint msglen)
        /* Wait until control frame is available */
        timeleft = brcmf_sdbrcm_ioctl_resp_wait(bus, &bus->rxlen, &pending);
 
-       brcmf_sdbrcm_sdlock(bus);
+       down(&bus->sdsem);
        rxlen = bus->rxlen;
        memcpy(msg, bus->rxctl, min(msglen, rxlen));
        bus->rxlen = 0;
-       brcmf_sdbrcm_sdunlock(bus);
+       up(&bus->sdsem);
 
        if (rxlen) {
                brcmf_dbg(CTL, "resumed on rxctl frame, got %d expected %d\n",
@@ -3677,7 +3660,7 @@ void brcmf_sdbrcm_bus_stop(struct brcmf_bus *bus, bool enforce_mutex)
        brcmf_dbg(TRACE, "Enter\n");
 
        if (enforce_mutex)
-               brcmf_sdbrcm_sdlock(bus);
+               down(&bus->sdsem);
 
        bus_wake(bus);
 
@@ -3749,7 +3732,7 @@ void brcmf_sdbrcm_bus_stop(struct brcmf_bus *bus, bool enforce_mutex)
        bus->tx_seq = bus->rx_seq = 0;
 
        if (enforce_mutex)
-               brcmf_sdbrcm_sdunlock(bus);
+               up(&bus->sdsem);
 }
 
 int brcmf_sdbrcm_bus_init(struct brcmf_pub *drvr, bool enforce_mutex)
@@ -3777,7 +3760,7 @@ int brcmf_sdbrcm_bus_init(struct brcmf_pub *drvr, bool enforce_mutex)
        brcmf_sdbrcm_wd_timer(bus, BRCMF_WD_POLL_MS);
 
        if (enforce_mutex)
-               brcmf_sdbrcm_sdlock(bus);
+               down(&bus->sdsem);
 
        /* Make sure backplane clock is on, needed to generate F2 interrupt */
        brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
@@ -3851,7 +3834,7 @@ int brcmf_sdbrcm_bus_init(struct brcmf_pub *drvr, bool enforce_mutex)
 
 exit:
        if (enforce_mutex)
-               brcmf_sdbrcm_sdunlock(bus);
+               up(&bus->sdsem);
 
        return ret;
 }
@@ -3904,7 +3887,7 @@ static bool brcmf_sdbrcm_bus_watchdog(struct brcmf_pub *drvr)
        if (bus->sleeping)
                return false;
 
-       brcmf_sdbrcm_sdlock(bus);
+       down(&bus->sdsem);
 
        /* Poll period: check device if appropriate. */
        if (bus->poll && (++bus->polltick >= bus->pollrate)) {
@@ -3969,7 +3952,7 @@ static bool brcmf_sdbrcm_bus_watchdog(struct brcmf_pub *drvr)
                }
        }
 
-       brcmf_sdbrcm_sdunlock(bus);
+       up(&bus->sdsem);
 
        return bus->ipend;
 }
@@ -4562,7 +4545,6 @@ void *brcmf_sdbrcm_probe(u16 bus_no, u16 slot, u16 func, uint bustype,
                sema_init(&bus->sdsem, 1);
        } else {
                bus->threads_only = false;
-               spin_lock_init(&bus->sdlock);
        }
 
        if (brcmf_dpc_prio >= 0) {