From d353eca4e0480fddcb088c4692e1edba0a82eac9 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Wed, 30 Apr 2008 00:53:37 -0700 Subject: Char: moxa, cleanup module-param passed isa init Make the code more readable, remap the base address directly. Describe module parameters. Signed-off-by: Jiri Slaby Tested-by: Oyvind Aabling Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/moxa.c | 64 +++++++++++++++++++++++++++-------------------------- 1 file changed, 33 insertions(+), 31 deletions(-) diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c index 7f4d1ec4b03..2701f7c9f93 100644 --- a/drivers/char/moxa.c +++ b/drivers/char/moxa.c @@ -95,7 +95,6 @@ MODULE_DEVICE_TABLE(pci, moxa_pcibrds); static struct moxa_board_conf { int boardType; int numPorts; - unsigned long baseAddr; int busType; int loadstat; @@ -159,18 +158,21 @@ struct moxa_port { static int ttymajor = MOXAMAJOR; /* Variables for insmod */ #ifdef MODULE -static int baseaddr[4]; -static int type[4]; -static int numports[4]; +static unsigned long baseaddr[MAX_BOARDS]; +static unsigned int type[MAX_BOARDS]; +static unsigned int numports[MAX_BOARDS]; #endif MODULE_AUTHOR("William Chen"); MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); MODULE_LICENSE("GPL"); #ifdef MODULE -module_param_array(type, int, NULL, 0); -module_param_array(baseaddr, int, NULL, 0); -module_param_array(numports, int, NULL, 0); +module_param_array(type, uint, NULL, 0); +MODULE_PARM_DESC(type, "card type: C218=2, C320=4"); +module_param_array(baseaddr, ulong, NULL, 0); +MODULE_PARM_DESC(baseaddr, "base address"); +module_param_array(numports, uint, NULL, 0); +MODULE_PARM_DESC(numports, "numports (ignored for C218)"); #endif module_param(ttymajor, int, 0); @@ -335,8 +337,9 @@ static struct pci_driver moxa_pci_driver = { static int __init moxa_init(void) { - int i, numBoards = 0, retval = 0; struct moxa_port *ch; + unsigned int i, isabrds = 0; + int retval = 0; printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION); @@ -380,46 +383,45 @@ static int __init moxa_init(void) mod_timer(&moxaTimer, jiffies + HZ / 50); - /* Find the boards defined form module args. */ + /* Find the boards defined from module args. */ #ifdef MODULE + { + struct moxa_board_conf *brd = moxa_boards; for (i = 0; i < MAX_BOARDS; i++) { - if ((type[i] == MOXA_BOARD_C218_ISA) || - (type[i] == MOXA_BOARD_C320_ISA)) { + if (!baseaddr[i]) + break; + if (type[i] == MOXA_BOARD_C218_ISA || + type[i] == MOXA_BOARD_C320_ISA) { pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", - numBoards + 1, moxa_brdname[type[i] - 1], - (unsigned long)baseaddr[i]); - if (numBoards >= MAX_BOARDS) { - printk(KERN_WARNING "More than %d MOXA " - "Intellio family boards found. Board " - "is ignored.\n", MAX_BOARDS); + isabrds + 1, moxa_brdname[type[i] - 1], + baseaddr[i]); + brd->boardType = type[i]; + brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : + numports[i]; + brd->busType = MOXA_BUS_TYPE_ISA; + brd->basemem = ioremap(baseaddr[i], 0x4000); + if (!brd->basemem) { + printk(KERN_ERR "moxa: can't remap %lx\n", + baseaddr[i]); continue; } - moxa_boards[numBoards].boardType = type[i]; - if (type[i] == MOXA_BOARD_C218_ISA) - moxa_boards[numBoards].numPorts = 8; - else - moxa_boards[numBoards].numPorts = numports[i]; - moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA; - moxa_boards[numBoards].baseAddr = baseaddr[i]; - numBoards++; + + brd++; + isabrds++; } } + } #endif #ifdef CONFIG_PCI retval = pci_register_driver(&moxa_pci_driver); if (retval) { printk(KERN_ERR "Can't register moxa pci driver!\n"); - if (numBoards) + if (isabrds) retval = 0; } #endif - for (i = 0; i < numBoards; i++) { - moxa_boards[i].basemem = ioremap(moxa_boards[i].baseAddr, - 0x4000); - } - return retval; } -- cgit v1.2.3