From 128296fc3fa2f607050cc2c5d6dc90237f3cedb3 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Fri, 3 Jan 2014 15:52:22 +0300 Subject: [PATCH] sh_eth: coding style fixes Running 'scripts/checkpatch.pl' on the driver files gives numerous warnings: - block comments using empty /* line; - unneeded \ at end of lines; - message string split across lines; - use of __attribute__((aligned(n))) instead of __aligned(n) macro; - use of __attribute__((packed)) instead of __packed macro. Additionally, running 'scripts/checkpatch.pl --strict' gives more complaints: - including the paragraph about writing to FSF into the heading comment; - alignment not matching open paren; - multiple assignments on one line; - use of CamelCase names; - missing {} on one of the *if* arms where another has them; - spinlock definition without a comment. While fixing these, also do some more style cleanups: - remove useless () around expressions; - add {} around multi-line *if* operator's arm; - remove space before comma; - add spaces after /* and before */; - properly align continuation lines of broken up expressions; - realign comments to the structure fields. Signed-off-by: Sergei Shtylyov Signed-off-by: David S. Miller --- drivers/net/ethernet/renesas/sh_eth.c | 110 ++++++++++++++++------------------ drivers/net/ethernet/renesas/sh_eth.h | 53 +++++++--------- 2 files changed, 75 insertions(+), 88 deletions(-) diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index 2d00bce..8884107 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -1,5 +1,4 @@ -/* - * SuperH Ethernet device driver +/* SuperH Ethernet device driver * * Copyright (C) 2006-2012 Nobuhiro Iwamatsu * Copyright (C) 2008-2013 Renesas Solutions Corp. @@ -13,9 +12,6 @@ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. * * The full GNU General Public License is included in this distribution in * the file called "COPYING". @@ -646,8 +642,8 @@ static struct sh_eth_cpu_data sh7763_data = { .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, .tx_check = EESR_TC1 | EESR_FTC, - .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \ - EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \ + .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | + EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI, .apr = 1, @@ -732,7 +728,7 @@ static void sh_eth_set_default_cpu_data(struct sh_eth_cpu_data *cd) cd->ecsipr_value = DEFAULT_ECSIPR_INIT; if (!cd->fcftr_value) - cd->fcftr_value = DEFAULT_FIFO_F_D_RFF | \ + cd->fcftr_value = DEFAULT_FIFO_F_D_RFF | DEFAULT_FIFO_F_D_RFD; if (!cd->fdr_value) @@ -849,20 +845,17 @@ static inline __u32 edmac_to_cpu(struct sh_eth_private *mdp, u32 x) return x; } -/* - * Program the hardware MAC address from dev->dev_addr. - */ +/* Program the hardware MAC address from dev->dev_addr. */ static void update_mac_address(struct net_device *ndev) { sh_eth_write(ndev, - (ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) | - (ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]), MAHR); + (ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) | + (ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]), MAHR); sh_eth_write(ndev, - (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), MALR); + (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), MALR); } -/* - * Get MAC address from SuperH MAC address register +/* Get MAC address from SuperH MAC address register * * SuperH's Ethernet device doesn't have 'ROM' to MAC address. * This driver get MAC address that use by bootloader(U-boot or sh-ipl+g). @@ -1019,8 +1012,10 @@ static void sh_eth_ring_format(struct net_device *ndev) int rx_ringsize = sizeof(*rxdesc) * mdp->num_rx_ring; int tx_ringsize = sizeof(*txdesc) * mdp->num_tx_ring; - mdp->cur_rx = mdp->cur_tx = 0; - mdp->dirty_rx = mdp->dirty_tx = 0; + mdp->cur_rx = 0; + mdp->cur_tx = 0; + mdp->dirty_rx = 0; + mdp->dirty_tx = 0; memset(mdp->rx_ring, 0, rx_ringsize); @@ -1033,7 +1028,7 @@ static void sh_eth_ring_format(struct net_device *ndev) if (skb == NULL) break; dma_map_single(&ndev->dev, skb->data, mdp->rx_buf_sz, - DMA_FROM_DEVICE); + DMA_FROM_DEVICE); sh_eth_set_receive_align(skb); /* RX descriptor */ @@ -1081,8 +1076,7 @@ static int sh_eth_ring_init(struct net_device *ndev) struct sh_eth_private *mdp = netdev_priv(ndev); int rx_ringsize, tx_ringsize, ret = 0; - /* - * +26 gets the maximum ethernet encapsulation, +7 & ~7 because the + /* +26 gets the maximum ethernet encapsulation, +7 & ~7 because the * card needs room to do 8 byte alignment, +2 so we can reserve * the first 2 bytes, and +16 gets room for the status word from the * card. @@ -1257,7 +1251,7 @@ static int sh_eth_txfree(struct net_device *ndev) { struct sh_eth_private *mdp = netdev_priv(ndev); struct sh_eth_txdesc *txdesc; - int freeNum = 0; + int free_num = 0; int entry = 0; for (; mdp->cur_tx - mdp->dirty_tx > 0; mdp->dirty_tx++) { @@ -1271,7 +1265,7 @@ static int sh_eth_txfree(struct net_device *ndev) txdesc->buffer_length, DMA_TO_DEVICE); dev_kfree_skb_irq(mdp->tx_skbuff[entry]); mdp->tx_skbuff[entry] = NULL; - freeNum++; + free_num++; } txdesc->status = cpu_to_edmac(mdp, TD_TFP); if (entry >= mdp->num_tx_ring - 1) @@ -1280,7 +1274,7 @@ static int sh_eth_txfree(struct net_device *ndev) ndev->stats.tx_packets++; ndev->stats.tx_bytes += txdesc->buffer_length; } - return freeNum; + return free_num; } /* Packet receive function */ @@ -1313,8 +1307,7 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota) if (!(desc_status & RDFEND)) ndev->stats.rx_length_errors++; - /* - * In case of almost all GETHER/ETHERs, the Receive Frame State + /* In case of almost all GETHER/ETHERs, the Receive Frame State * (RFS) bits in the Receive Descriptor 0 are from bit 9 to * bit 0. However, in case of the R8A7740's GETHER, the RFS * bits are from bit 25 to bit 16. So, the driver needs right @@ -1374,7 +1367,7 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota) if (skb == NULL) break; /* Better luck next round. */ dma_map_single(&ndev->dev, skb->data, mdp->rx_buf_sz, - DMA_FROM_DEVICE); + DMA_FROM_DEVICE); sh_eth_set_receive_align(skb); skb_checksum_none_assert(skb); @@ -1392,10 +1385,13 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota) /* If we don't need to check status, don't. -KDU */ if (!(sh_eth_read(ndev, EDRRR) & EDRRR_R)) { /* fix the values for the next receiving if RDE is set */ - if (intr_status & EESR_RDE) - mdp->cur_rx = mdp->dirty_rx = - (sh_eth_read(ndev, RDFAR) - - sh_eth_read(ndev, RDLAR)) >> 4; + if (intr_status & EESR_RDE) { + u32 count = (sh_eth_read(ndev, RDFAR) - + sh_eth_read(ndev, RDLAR)) >> 4; + + mdp->cur_rx = count; + mdp->dirty_rx = count; + } sh_eth_write(ndev, EDRRR_R, EDRRR); } @@ -1438,17 +1434,17 @@ static void sh_eth_error(struct net_device *ndev, int intr_status) if (mdp->ether_link_active_low) link_stat = ~link_stat; } - if (!(link_stat & PHY_ST_LINK)) + if (!(link_stat & PHY_ST_LINK)) { sh_eth_rcv_snd_disable(ndev); - else { + } else { /* Link Up */ sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) & - ~DMAC_M_ECI, EESIPR); - /*clear int */ + ~DMAC_M_ECI, EESIPR); + /* clear int */ sh_eth_write(ndev, sh_eth_read(ndev, ECSR), - ECSR); + ECSR); sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) | - DMAC_M_ECI, EESIPR); + DMAC_M_ECI, EESIPR); /* enable tx and rx */ sh_eth_rcv_snd_enable(ndev); } @@ -1519,9 +1515,9 @@ ignore_link: u32 edtrr = sh_eth_read(ndev, EDTRR); /* dmesg */ dev_err(&ndev->dev, "TX error. status=%8.8x cur_tx=%8.8x ", - intr_status, mdp->cur_tx); + intr_status, mdp->cur_tx); dev_err(&ndev->dev, "dirty_tx=%8.8x state=%8.8x EDTRR=%8.8x.\n", - mdp->dirty_tx, (u32) ndev->state, edtrr); + mdp->dirty_tx, (u32) ndev->state, edtrr); /* dirty buffer free */ sh_eth_txfree(ndev); @@ -1644,7 +1640,8 @@ static void sh_eth_adjust_link(struct net_device *ndev) } if (!mdp->link) { sh_eth_write(ndev, - (sh_eth_read(ndev, ECMR) & ~ECMR_TXF), ECMR); + sh_eth_read(ndev, ECMR) & ~ECMR_TXF, + ECMR); new_state = 1; mdp->link = phydev->link; if (mdp->cd->no_psr || mdp->no_ether_link) @@ -1671,7 +1668,7 @@ static int sh_eth_phy_init(struct net_device *ndev) struct phy_device *phydev = NULL; snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT, - mdp->mii_bus->id , mdp->phy_id); + mdp->mii_bus->id, mdp->phy_id); mdp->link = 0; mdp->speed = 0; @@ -1709,7 +1706,7 @@ static int sh_eth_phy_start(struct net_device *ndev) } static int sh_eth_get_settings(struct net_device *ndev, - struct ethtool_cmd *ecmd) + struct ethtool_cmd *ecmd) { struct sh_eth_private *mdp = netdev_priv(ndev); unsigned long flags; @@ -1723,7 +1720,7 @@ static int sh_eth_get_settings(struct net_device *ndev, } static int sh_eth_set_settings(struct net_device *ndev, - struct ethtool_cmd *ecmd) + struct ethtool_cmd *ecmd) { struct sh_eth_private *mdp = netdev_priv(ndev); unsigned long flags; @@ -1799,7 +1796,7 @@ static int sh_eth_get_sset_count(struct net_device *netdev, int sset) } static void sh_eth_get_ethtool_stats(struct net_device *ndev, - struct ethtool_stats *stats, u64 *data) + struct ethtool_stats *stats, u64 *data) { struct sh_eth_private *mdp = netdev_priv(ndev); int i = 0; @@ -1816,7 +1813,7 @@ static void sh_eth_get_strings(struct net_device *ndev, u32 stringset, u8 *data) switch (stringset) { case ETH_SS_STATS: memcpy(data, *sh_eth_gstrings_stats, - sizeof(sh_eth_gstrings_stats)); + sizeof(sh_eth_gstrings_stats)); break; } } @@ -1951,9 +1948,10 @@ static void sh_eth_tx_timeout(struct net_device *ndev) netif_stop_queue(ndev); - if (netif_msg_timer(mdp)) - dev_err(&ndev->dev, "%s: transmit timed out, status %8.8x," - " resetting...\n", ndev->name, (int)sh_eth_read(ndev, EESR)); + if (netif_msg_timer(mdp)) { + dev_err(&ndev->dev, "%s: transmit timed out, status %8.8x, resetting...\n", + ndev->name, (int)sh_eth_read(ndev, EESR)); + } /* tx_errors count up */ ndev->stats.tx_errors++; @@ -2086,8 +2084,7 @@ static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev) } /* ioctl to device function */ -static int sh_eth_do_ioctl(struct net_device *ndev, struct ifreq *rq, - int cmd) +static int sh_eth_do_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd) { struct sh_eth_private *mdp = netdev_priv(ndev); struct phy_device *phydev = mdp->phydev; @@ -2342,8 +2339,7 @@ static void sh_eth_set_multicast_list(struct net_device *ndev) unsigned long flags; spin_lock_irqsave(&mdp->lock, flags); - /* - * Initial condition is MCT = 1, PRM = 0. + /* Initial condition is MCT = 1, PRM = 0. * Depending on ndev->flags, set PRM or clear MCT */ ecmr_bits = (sh_eth_read(ndev, ECMR) & ~ECMR_PRM) | ECMR_MCT; @@ -2409,8 +2405,7 @@ static int sh_eth_vlan_rx_add_vid(struct net_device *ndev, mdp->vlan_num_ids++; - /* - * The controller has one VLAN tag HW filter. So, if the filter is + /* The controller has one VLAN tag HW filter. So, if the filter is * already enabled, the driver disables it and the filte */ if (mdp->vlan_num_ids > 1) { @@ -2526,7 +2521,7 @@ static int sh_mdio_init(struct net_device *ndev, int id, mdp->mii_bus->name = "sh_mii"; mdp->mii_bus->parent = &ndev->dev; snprintf(mdp->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x", - mdp->pdev->name, id); + mdp->pdev->name, id); /* PHY IRQ */ mdp->mii_bus->irq = devm_kzalloc(&ndev->dev, @@ -2739,7 +2734,7 @@ static int sh_eth_drv_probe(struct platform_device *pdev) /* print device information */ pr_info("Base address at 0x%x, %pM, IRQ %d.\n", - (u32)ndev->base_addr, ndev->dev_addr, ndev->irq); + (u32)ndev->base_addr, ndev->dev_addr, ndev->irq); platform_set_drvdata(pdev, ndev); @@ -2777,8 +2772,7 @@ static int sh_eth_drv_remove(struct platform_device *pdev) #ifdef CONFIG_PM static int sh_eth_runtime_nop(struct device *dev) { - /* - * Runtime PM callback shared between ->runtime_suspend() + /* Runtime PM callback shared between ->runtime_suspend() * and ->runtime_resume(). Simply returns success. * * This driver re-initializes all registers after diff --git a/drivers/net/ethernet/renesas/sh_eth.h b/drivers/net/ethernet/renesas/sh_eth.h index f32c169..0fe35b7 100644 --- a/drivers/net/ethernet/renesas/sh_eth.h +++ b/drivers/net/ethernet/renesas/sh_eth.h @@ -1,5 +1,4 @@ -/* - * SuperH Ethernet device driver +/* SuperH Ethernet device driver * * Copyright (C) 2006-2012 Nobuhiro Iwamatsu * Copyright (C) 2008-2012 Renesas Solutions Corp. @@ -12,9 +11,6 @@ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. * * The full GNU General Public License is included in this distribution in * the file called "COPYING". @@ -171,8 +167,7 @@ enum { #define SH2_SH3_SKB_RX_ALIGN 2 #endif -/* - * Register's bits +/* Register's bits */ /* EDSR : sh7734, sh7757, sh7763, and r8a7740 only */ enum EDSR_BIT { @@ -199,7 +194,7 @@ enum DMAC_T_BIT { EDTRR_TRNS_ETHER = 0x01, }; -/* EDRRR*/ +/* EDRRR */ enum EDRRR_R_BIT { EDRRR_R = 0x01, }; @@ -422,8 +417,7 @@ enum TSU_FWSLC_BIT { #define TSU_VTAG_ENABLE 0x80000000 #define TSU_VTAG_VID_MASK 0x00000fff -/* - * The sh ether Tx buffer descriptors. +/* The sh ether Tx buffer descriptors. * This structure should be 20 bytes. */ struct sh_eth_txdesc { @@ -437,10 +431,9 @@ struct sh_eth_txdesc { #endif u32 addr; /* TD2 */ u32 pad1; /* padding data */ -} __attribute__((aligned(2), packed)); +} __aligned(2) __packed; -/* - * The sh ether Rx buffer descriptors. +/* The sh ether Rx buffer descriptors. * This structure should be 20 bytes. */ struct sh_eth_rxdesc { @@ -454,7 +447,7 @@ struct sh_eth_rxdesc { #endif u32 addr; /* RD2 */ u32 pad0; /* padding data */ -} __attribute__((aligned(2), packed)); +} __aligned(2) __packed; /* This structure is used by each CPU dependency handling. */ struct sh_eth_cpu_data { @@ -480,16 +473,16 @@ struct sh_eth_cpu_data { unsigned long eesr_err_check; /* hardware features */ - unsigned long irq_flags; /* IRQ configuration flags */ - unsigned no_psr:1; /* EtherC DO NOT have PSR */ - unsigned apr:1; /* EtherC have APR */ - unsigned mpr:1; /* EtherC have MPR */ - unsigned tpauser:1; /* EtherC have TPAUSER */ - unsigned bculr:1; /* EtherC have BCULR */ - unsigned tsu:1; /* EtherC have TSU */ - unsigned hw_swap:1; /* E-DMAC have DE bit in EDMR */ - unsigned rpadir:1; /* E-DMAC have RPADIR */ - unsigned no_trimd:1; /* E-DMAC DO NOT have TRIMD */ + unsigned long irq_flags; /* IRQ configuration flags */ + unsigned no_psr:1; /* EtherC DO NOT have PSR */ + unsigned apr:1; /* EtherC have APR */ + unsigned mpr:1; /* EtherC have MPR */ + unsigned tpauser:1; /* EtherC have TPAUSER */ + unsigned bculr:1; /* EtherC have BCULR */ + unsigned tsu:1; /* EtherC have TSU */ + unsigned hw_swap:1; /* E-DMAC have DE bit in EDMR */ + unsigned rpadir:1; /* E-DMAC have RPADIR */ + unsigned no_trimd:1; /* E-DMAC DO NOT have TRIMD */ unsigned no_ade:1; /* E-DMAC DO NOT have ADE bit in EESR */ unsigned hw_crc:1; /* E-DMAC have CSMR */ unsigned select_mii:1; /* EtherC have RMII_MII (MII select register) */ @@ -511,14 +504,14 @@ struct sh_eth_private { struct sh_eth_txdesc *tx_ring; struct sk_buff **rx_skbuff; struct sk_buff **tx_skbuff; - spinlock_t lock; - u32 cur_rx, dirty_rx; /* Producer/consumer ring indices */ + spinlock_t lock; /* Register access lock */ + u32 cur_rx, dirty_rx; /* Producer/consumer ring indices */ u32 cur_tx, dirty_tx; - u32 rx_buf_sz; /* Based on MTU+slack. */ + u32 rx_buf_sz; /* Based on MTU+slack. */ int edmac_endian; struct napi_struct napi; /* MII transceiver section. */ - u32 phy_id; /* PHY ID */ + u32 phy_id; /* PHY ID */ struct mii_bus *mii_bus; /* MDIO bus control */ struct phy_device *phydev; /* PHY device control */ int link; @@ -526,8 +519,8 @@ struct sh_eth_private { int msg_enable; int speed; int duplex; - int port; /* for TSU */ - int vlan_num_ids; /* for VLAN tag filter */ + int port; /* for TSU */ + int vlan_num_ids; /* for VLAN tag filter */ unsigned no_ether_link:1; unsigned ether_link_active_low:1; -- 2.7.4