From eaa95a8da6366c34d3a61e93109e5f8f8a4e72a0 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Wed, 30 Apr 2008 00:53:46 -0700 Subject: [PATCH] Char: moxa, little cleanup Cleanup of - whitespace - macros - useless casts - return (sth); -> return sth; - types - superfluous parenthesis and braces - init tmp directly in moxa_get_serial_info - commented defunct code - commented prototypes - MOXA/moxa printk case Signed-off-by: Jiri Slaby Tested-by: Oyvind Aabling Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/moxa.c | 172 ++++++++++++++++---------------------------- 1 file changed, 62 insertions(+), 110 deletions(-) diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c index af8077c25cbe..876c79b1cee0 100644 --- a/drivers/char/moxa.c +++ b/drivers/char/moxa.c @@ -54,7 +54,6 @@ #define MOXA_FW_HDRLEN 32 #define MOXAMAJOR 172 -#define MOXACUMAJOR 173 #define MAX_BOARDS 4 /* Don't change this value */ #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */ @@ -246,7 +245,7 @@ static void moxa_wait_finish(void __iomem *ofsAddr) printk(KERN_WARNING "moxa function expired\n"); } -static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg) +static void moxafunc(void __iomem *ofsAddr, u16 cmd, u16 arg) { writew(arg, ofsAddr + FuncArg); writew(cmd, ofsAddr + FuncCode); @@ -478,7 +477,7 @@ static int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, goto err; tmp = readw(baseAddr + C320_status); if (tmp != STS_init) { - printk(KERN_ERR "moxa: bios upload failed -- CPU/Basic " + printk(KERN_ERR "MOXA: bios upload failed -- CPU/Basic " "module not found\n"); return -EIO; } @@ -487,7 +486,7 @@ static int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, return 0; err: - printk(KERN_ERR "moxa: bios upload failed -- board not found\n"); + printk(KERN_ERR "MOXA: bios upload failed -- board not found\n"); return -EIO; } @@ -497,7 +496,7 @@ static int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, void __iomem *baseAddr = brd->basemem; if (len < 7168) { - printk(KERN_ERR "moxa: invalid 320 bios -- too short\n"); + printk(KERN_ERR "MOXA: invalid 320 bios -- too short\n"); return -EINVAL; } @@ -642,7 +641,7 @@ static int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, int retval, i; if (len % 2) { - printk(KERN_ERR "moxa: bios length is not even\n"); + printk(KERN_ERR "MOXA: bios length is not even\n"); return -EINVAL; } @@ -764,7 +763,7 @@ static int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) lens[a] = le16_to_cpu(hdr->len[a]); if (lens[a] && len + lens[a] <= fw->size && moxa_check_fw(&fw->data[len])) - printk(KERN_WARNING "moxa firmware: unexpected input " + printk(KERN_WARNING "MOXA firmware: unexpected input " "at offset %u, but going on\n", (u32)len); if (!lens[a] && a < lencnt) { sprintf(rsn, "too few entries in fw file"); @@ -965,7 +964,7 @@ static int __devinit moxa_pci_probe(struct pci_dev *pdev, pci_set_drvdata(pdev, board); - return (0); + return 0; err_base: iounmap(board->basemem); board->basemem = NULL; @@ -1016,10 +1015,8 @@ static int __init moxa_init(void) moxaDriver->flags = TTY_DRIVER_REAL_RAW; tty_set_operations(moxaDriver, &moxa_ops); - pr_debug("Moxa tty devices major number = %d\n", ttymajor); - if (tty_register_driver(moxaDriver)) { - printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n"); + printk(KERN_ERR "can't register MOXA Smartio tty driver!\n"); put_tty_driver(moxaDriver); return -1; } @@ -1043,7 +1040,7 @@ static int __init moxa_init(void) brd->busType = MOXA_BUS_TYPE_ISA; brd->basemem = ioremap(baseaddr[i], 0x4000); if (!brd->basemem) { - printk(KERN_ERR "moxa: can't remap %lx\n", + printk(KERN_ERR "MOXA: can't remap %lx\n", baseaddr[i]); continue; } @@ -1063,7 +1060,7 @@ static int __init moxa_init(void) #ifdef CONFIG_PCI retval = pci_register_driver(&moxa_pci_driver); if (retval) { - printk(KERN_ERR "Can't register moxa pci driver!\n"); + printk(KERN_ERR "Can't register MOXA pci driver!\n"); if (isabrds) retval = 0; } @@ -1074,7 +1071,7 @@ static int __init moxa_init(void) static void __exit moxa_exit(void) { - int i; + unsigned int i; #ifdef CONFIG_PCI pci_unregister_driver(&moxa_pci_driver); @@ -1236,12 +1233,8 @@ static int moxa_write(struct tty_struct *tty, len = MoxaPortWriteData(ch, buf, count); spin_unlock_bh(&moxa_lock); - /********************************************* - if ( !(ch->statusflags & LOWWAIT) && - ((len != count) || (MoxaPortTxFree(port) <= 100)) ) - ************************************************/ ch->statusflags |= LOWWAIT; - return (len); + return len; } static int moxa_write_room(struct tty_struct *tty) @@ -1249,10 +1242,10 @@ static int moxa_write_room(struct tty_struct *tty) struct moxa_port *ch; if (tty->stopped) - return (0); + return 0; ch = tty->driver_data; if (ch == NULL) - return (0); + return 0; return MoxaPortTxFree(ch); } @@ -1278,7 +1271,7 @@ static int moxa_chars_in_buffer(struct tty_struct *tty) * routine. And since the open() failed, we return 0 here. TDJ */ if (ch == NULL) - return (0); + return 0; chars = MoxaPortTxQueue(ch); if (chars) { /* @@ -1288,7 +1281,7 @@ static int moxa_chars_in_buffer(struct tty_struct *tty) if (!(ch->statusflags & EMPTYWAIT)) moxa_setup_empty_event(tty); } - return (chars); + return chars; } static void moxa_flush_chars(struct tty_struct *tty) @@ -1308,9 +1301,7 @@ static void moxa_put_char(struct tty_struct *tty, unsigned char c) spin_lock_bh(&moxa_lock); MoxaPortWriteData(ch, &c, 1); spin_unlock_bh(&moxa_lock); - /************************************************ - if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) ) - *************************************************/ + ch->statusflags |= LOWWAIT; } @@ -1373,34 +1364,33 @@ static int moxa_tiocmset(struct tty_struct *tty, struct file *file, static void moxa_throttle(struct tty_struct *tty) { - struct moxa_port *ch = (struct moxa_port *) tty->driver_data; + struct moxa_port *ch = tty->driver_data; ch->statusflags |= THROTTLE; } static void moxa_unthrottle(struct tty_struct *tty) { - struct moxa_port *ch = (struct moxa_port *) tty->driver_data; + struct moxa_port *ch = tty->driver_data; ch->statusflags &= ~THROTTLE; } static void moxa_set_termios(struct tty_struct *tty, - struct ktermios *old_termios) + struct ktermios *old_termios) { - struct moxa_port *ch = (struct moxa_port *) tty->driver_data; + struct moxa_port *ch = tty->driver_data; if (ch == NULL) return; moxa_set_tty_param(tty, old_termios); - if (!(old_termios->c_cflag & CLOCAL) && - (tty->termios->c_cflag & CLOCAL)) + if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) wake_up_interruptible(&ch->open_wait); } static void moxa_stop(struct tty_struct *tty) { - struct moxa_port *ch = (struct moxa_port *) tty->driver_data; + struct moxa_port *ch = tty->driver_data; if (ch == NULL) return; @@ -1411,7 +1401,7 @@ static void moxa_stop(struct tty_struct *tty) static void moxa_start(struct tty_struct *tty) { - struct moxa_port *ch = (struct moxa_port *) tty->driver_data; + struct moxa_port *ch = tty->driver_data; if (ch == NULL) return; @@ -1444,7 +1434,7 @@ static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) { dcd = !!dcd; - if ((dcd != p->DCDState) && p->tty && C_CLOCAL(p->tty)) { + if (dcd != p->DCDState && p->tty && C_CLOCAL(p->tty)) { if (!dcd) tty_hangup(p->tty); } @@ -1552,12 +1542,10 @@ static void moxa_poll(unsigned long ignored) static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) { - register struct ktermios *ts; - struct moxa_port *ch; + register struct ktermios *ts = tty->termios; + struct moxa_port *ch = tty->driver_data; int rts, cts, txflow, rxflow, xany, baud; - ch = (struct moxa_port *) tty->driver_data; - ts = tty->termios; rts = cts = txflow = rxflow = xany = 0; if (ts->c_cflag & CRTSCTS) rts = cts = 1; @@ -1614,7 +1602,7 @@ static void moxa_shut_down(struct moxa_port *ch) static void MoxaPortFlushData(struct moxa_port *port, int mode) { void __iomem *ofsAddr; - if ((mode < 0) || (mode > 2)) + if (mode < 0 || mode > 2) return; ofsAddr = port->tableAddr; moxafunc(ofsAddr, FC_FlushQueue, mode); @@ -1624,27 +1612,6 @@ static void MoxaPortFlushData(struct moxa_port *port, int mode) } } -/***************************************************************************** - * Port level functions: * - * 2. MoxaPortEnable(int port); * - * 3. MoxaPortDisable(int port); * - * 4. MoxaPortGetMaxBaud(int port); * - * 6. MoxaPortSetBaud(int port, long baud); * - * 8. MoxaPortSetTermio(int port, unsigned char *termio); * - * 9. MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); * - * 10. MoxaPortLineCtrl(int port, int dtrState, int rtsState); * - * 11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany); * - * 12. MoxaPortLineStatus(int port); * - * 15. MoxaPortFlushData(int port, int mode); * - * 16. MoxaPortWriteData(int port, unsigned char * buffer, int length); * - * 17. MoxaPortReadData(int port, struct tty_struct *tty); * - * 20. MoxaPortTxQueue(int port); * - * 21. MoxaPortTxFree(int port); * - * 22. MoxaPortRxQueue(int port); * - * 24. MoxaPortTxDisable(int port); * - * 25. MoxaPortTxEnable(int port); * - * 27. MoxaPortResetBrkCnt(int port); * - *****************************************************************************/ /* * Moxa Port Number Description: * @@ -1849,16 +1816,16 @@ static void MoxaPortFlushData(struct moxa_port *port, int mode) static void MoxaPortEnable(struct moxa_port *port) { void __iomem *ofsAddr; - short lowwater = 512; + u16 lowwater = 512; ofsAddr = port->tableAddr; writew(lowwater, ofsAddr + Low_water); if (port->board->boardType == MOXA_BOARD_C320_ISA || - port->board->boardType == MOXA_BOARD_C320_PCI) { + port->board->boardType == MOXA_BOARD_C320_PCI) moxafunc(ofsAddr, FC_SetBreakIrq, 0); - } else { - writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat); - } + else + writew(readw(ofsAddr + HostStat) | WakeupBreak, + ofsAddr + HostStat); moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); moxafunc(ofsAddr, FC_FlushQueue, 2); @@ -1881,9 +1848,9 @@ static long MoxaPortGetMaxBaud(struct moxa_port *port) { if (port->board->boardType == MOXA_BOARD_C320_ISA || port->board->boardType == MOXA_BOARD_C320_PCI) - return (460800L); + return 460800L; else - return (921600L); + return 921600L; } @@ -1893,8 +1860,8 @@ static long MoxaPortSetBaud(struct moxa_port *port, long baud) long max, clock; unsigned int val; - if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0)) - return (0); + if (baud < 50L || (max = MoxaPortGetMaxBaud(port)) == 0) + return 0; ofsAddr = port->tableAddr; if (baud > max) baud = max; @@ -1907,7 +1874,7 @@ static long MoxaPortSetBaud(struct moxa_port *port, long baud) val = clock / baud; moxafunc(ofsAddr, FC_SetBaud, val); baud = clock / val; - return (baud); + return baud; } static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, @@ -1946,12 +1913,12 @@ static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, } else mode |= MX_PARNONE; - moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode); + moxafunc(ofsAddr, FC_SetDataMode, (u16)mode); if (port->board->boardType == MOXA_BOARD_C320_ISA || port->board->boardType == MOXA_BOARD_C320_PCI) { if (baud >= 921600L) - return (-1); + return -1; } baud = MoxaPortSetBaud(port, baud); @@ -1962,24 +1929,23 @@ static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, moxa_wait_finish(ofsAddr); } - return (baud); + return baud; } static int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState, int *rtsState) { - if (dtrState) *dtrState = !!(port->lineCtrl & DTR_ON); if (rtsState) *rtsState = !!(port->lineCtrl & RTS_ON); - return (0); + return 0; } static void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts) { - int mode = 0; + u8 mode = 0; if (dtr) mode |= DTR_ON; @@ -2193,60 +2159,46 @@ static void MoxaPortTxEnable(struct moxa_port *port) } static int moxa_get_serial_info(struct moxa_port *info, - struct serial_struct __user *retinfo) + struct serial_struct __user *retinfo) { - struct serial_struct tmp; - - memset(&tmp, 0, sizeof(tmp)); - tmp.type = info->type; - tmp.line = info->tty->index; - tmp.port = 0; - tmp.irq = 0; - tmp.flags = info->asyncflags; - tmp.baud_base = 921600; - tmp.close_delay = info->close_delay; - tmp.custom_divisor = 0; - tmp.hub6 = 0; - if(copy_to_user(retinfo, &tmp, sizeof(*retinfo))) - return -EFAULT; - return (0); + struct serial_struct tmp = { + .type = info->type, + .line = info->tty->index, + .flags = info->asyncflags, + .baud_base = 921600, + .close_delay = info->close_delay + }; + return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; } static int moxa_set_serial_info(struct moxa_port *info, - struct serial_struct __user *new_info) + struct serial_struct __user *new_info) { struct serial_struct new_serial; - if(copy_from_user(&new_serial, new_info, sizeof(new_serial))) + if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) return -EFAULT; - if ((new_serial.irq != 0) || - (new_serial.port != 0) || -// (new_serial.type != info->type) || - (new_serial.custom_divisor != 0) || - (new_serial.baud_base != 921600)) - return (-EPERM); + if (new_serial.irq != 0 || new_serial.port != 0 || + new_serial.custom_divisor != 0 || + new_serial.baud_base != 921600) + return -EPERM; if (!capable(CAP_SYS_ADMIN)) { if (((new_serial.flags & ~ASYNC_USR_MASK) != (info->asyncflags & ~ASYNC_USR_MASK))) - return (-EPERM); - } else { + return -EPERM; + } else info->close_delay = new_serial.close_delay * HZ / 100; - } new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS); new_serial.flags |= (info->asyncflags & ASYNC_FLAGS); - if (new_serial.type == PORT_16550A) { - MoxaSetFifo(info, 1); - } else { - MoxaSetFifo(info, 0); - } + MoxaSetFifo(info, new_serial.type == PORT_16550A); info->type = new_serial.type; - return (0); + return 0; } -- 2.30.2