From 797fe5cbefdb91f796502677e3a6623262eb9fcd Mon Sep 17 00:00:00 2001 From: Sujith Date: Mon, 30 Mar 2009 15:28:45 +0530 Subject: [PATCH] ath9k: Remove the useless do..while loops These are unnecessary constructs in a function. This patch removes these from both RX and TX init routines. Signed-off-by: Sujith Signed-off-by: John W. Linville --- drivers/net/wireless/ath9k/ath9k.h | 2 +- drivers/net/wireless/ath9k/recv.c | 83 ++++++++++++++---------------- drivers/net/wireless/ath9k/xmit.c | 40 ++++++-------- 3 files changed, 57 insertions(+), 68 deletions(-) diff --git a/drivers/net/wireless/ath9k/ath9k.h b/drivers/net/wireless/ath9k/ath9k.h index 0ef89bb73f31..c92d46fa9d51 100644 --- a/drivers/net/wireless/ath9k/ath9k.h +++ b/drivers/net/wireless/ath9k/ath9k.h @@ -340,7 +340,7 @@ void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an); void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an); void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq); int ath_tx_init(struct ath_softc *sc, int nbufs); -int ath_tx_cleanup(struct ath_softc *sc); +void ath_tx_cleanup(struct ath_softc *sc); struct ath_txq *ath_test_get_txq(struct ath_softc *sc, struct sk_buff *skb); int ath_txq_update(struct ath_softc *sc, int qnum, struct ath9k_tx_queue_info *q); diff --git a/drivers/net/wireless/ath9k/recv.c b/drivers/net/wireless/ath9k/recv.c index efa57ae8901c..b46badd21f73 100644 --- a/drivers/net/wireless/ath9k/recv.c +++ b/drivers/net/wireless/ath9k/recv.c @@ -283,54 +283,51 @@ int ath_rx_init(struct ath_softc *sc, int nbufs) struct ath_buf *bf; int error = 0; - do { - spin_lock_init(&sc->rx.rxflushlock); - sc->sc_flags &= ~SC_OP_RXFLUSH; - spin_lock_init(&sc->rx.rxbuflock); - - sc->rx.bufsize = roundup(IEEE80211_MAX_MPDU_LEN, - min(sc->cachelsz, - (u16)64)); + spin_lock_init(&sc->rx.rxflushlock); + sc->sc_flags &= ~SC_OP_RXFLUSH; + spin_lock_init(&sc->rx.rxbuflock); - DPRINTF(sc, ATH_DBG_CONFIG, "cachelsz %u rxbufsize %u\n", - sc->cachelsz, sc->rx.bufsize); + sc->rx.bufsize = roundup(IEEE80211_MAX_MPDU_LEN, + min(sc->cachelsz, (u16)64)); - /* Initialize rx descriptors */ + DPRINTF(sc, ATH_DBG_CONFIG, "cachelsz %u rxbufsize %u\n", + sc->cachelsz, sc->rx.bufsize); - error = ath_descdma_setup(sc, &sc->rx.rxdma, &sc->rx.rxbuf, - "rx", nbufs, 1); - if (error != 0) { - DPRINTF(sc, ATH_DBG_FATAL, - "failed to allocate rx descriptors: %d\n", error); - break; - } + /* Initialize rx descriptors */ - list_for_each_entry(bf, &sc->rx.rxbuf, list) { - skb = ath_rxbuf_alloc(sc, sc->rx.bufsize, GFP_KERNEL); - if (skb == NULL) { - error = -ENOMEM; - break; - } + error = ath_descdma_setup(sc, &sc->rx.rxdma, &sc->rx.rxbuf, + "rx", nbufs, 1); + if (error != 0) { + DPRINTF(sc, ATH_DBG_FATAL, + "failed to allocate rx descriptors: %d\n", error); + goto err; + } - bf->bf_mpdu = skb; - bf->bf_buf_addr = dma_map_single(sc->dev, skb->data, - sc->rx.bufsize, - DMA_FROM_DEVICE); - if (unlikely(dma_mapping_error(sc->dev, - bf->bf_buf_addr))) { - dev_kfree_skb_any(skb); - bf->bf_mpdu = NULL; - DPRINTF(sc, ATH_DBG_FATAL, - "dma_mapping_error() on RX init\n"); - error = -ENOMEM; - break; - } - bf->bf_dmacontext = bf->bf_buf_addr; + list_for_each_entry(bf, &sc->rx.rxbuf, list) { + skb = ath_rxbuf_alloc(sc, sc->rx.bufsize, GFP_KERNEL); + if (skb == NULL) { + error = -ENOMEM; + goto err; } - sc->rx.rxlink = NULL; - } while (0); + bf->bf_mpdu = skb; + bf->bf_buf_addr = dma_map_single(sc->dev, skb->data, + sc->rx.bufsize, + DMA_FROM_DEVICE); + if (unlikely(dma_mapping_error(sc->dev, + bf->bf_buf_addr))) { + dev_kfree_skb_any(skb); + bf->bf_mpdu = NULL; + DPRINTF(sc, ATH_DBG_FATAL, + "dma_mapping_error() on RX init\n"); + error = -ENOMEM; + goto err; + } + bf->bf_dmacontext = bf->bf_buf_addr; + } + sc->rx.rxlink = NULL; +err: if (error) ath_rx_cleanup(sc); @@ -345,10 +342,8 @@ void ath_rx_cleanup(struct ath_softc *sc) list_for_each_entry(bf, &sc->rx.rxbuf, list) { skb = bf->bf_mpdu; if (skb) { - dma_unmap_single(sc->dev, - bf->bf_buf_addr, - sc->rx.bufsize, - DMA_FROM_DEVICE); + dma_unmap_single(sc->dev, bf->bf_buf_addr, + sc->rx.bufsize, DMA_FROM_DEVICE); dev_kfree_skb(skb); } } diff --git a/drivers/net/wireless/ath9k/xmit.c b/drivers/net/wireless/ath9k/xmit.c index 735256faa0b2..628b780d8844 100644 --- a/drivers/net/wireless/ath9k/xmit.c +++ b/drivers/net/wireless/ath9k/xmit.c @@ -2047,44 +2047,38 @@ int ath_tx_init(struct ath_softc *sc, int nbufs) { int error = 0; - do { - spin_lock_init(&sc->tx.txbuflock); + spin_lock_init(&sc->tx.txbuflock); - error = ath_descdma_setup(sc, &sc->tx.txdma, &sc->tx.txbuf, - "tx", nbufs, 1); - if (error != 0) { - DPRINTF(sc, ATH_DBG_FATAL, - "Failed to allocate tx descriptors: %d\n", - error); - break; - } - - error = ath_descdma_setup(sc, &sc->beacon.bdma, &sc->beacon.bbuf, - "beacon", ATH_BCBUF, 1); - if (error != 0) { - DPRINTF(sc, ATH_DBG_FATAL, - "Failed to allocate beacon descriptors: %d\n", - error); - break; - } + error = ath_descdma_setup(sc, &sc->tx.txdma, &sc->tx.txbuf, + "tx", nbufs, 1); + if (error != 0) { + DPRINTF(sc, ATH_DBG_FATAL, + "Failed to allocate tx descriptors: %d\n", error); + goto err; + } - } while (0); + error = ath_descdma_setup(sc, &sc->beacon.bdma, &sc->beacon.bbuf, + "beacon", ATH_BCBUF, 1); + if (error != 0) { + DPRINTF(sc, ATH_DBG_FATAL, + "Failed to allocate beacon descriptors: %d\n", error); + goto err; + } +err: if (error != 0) ath_tx_cleanup(sc); return error; } -int ath_tx_cleanup(struct ath_softc *sc) +void ath_tx_cleanup(struct ath_softc *sc) { if (sc->beacon.bdma.dd_desc_len != 0) ath_descdma_cleanup(sc, &sc->beacon.bdma, &sc->beacon.bbuf); if (sc->tx.txdma.dd_desc_len != 0) ath_descdma_cleanup(sc, &sc->tx.txdma, &sc->tx.txbuf); - - return 0; } void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an) -- 2.20.1