From: Roland Vossen Date: Sun, 2 Oct 2011 17:14:39 +0000 (-0700) Subject: staging: brcm80211: removed unused fullmac spinlock X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=93a03c62ed26db436559dcd14f18fc65d77b3cd9;p=openwrt%2Fstaging%2Fblogic.git 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 Reviewed-by: Arend van Spriel Reviewed-by: Franky Lin Signed-off-by: Franky Lin Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c b/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c index 0def6e3ad015..198d544ffb70 100644 --- 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) {