From: Daeseok Youn Date: Fri, 11 Nov 2016 07:55:44 +0000 (+0900) Subject: staging: dgnc: re-arrange functions for removing forward declarations X-Git-Tag: v5.15~12305^2~276 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ece26a694ed990d985353ec4c2296dde5e04d8a9;p=platform%2Fkernel%2Flinux-starfive.git staging: dgnc: re-arrange functions for removing forward declarations Re-arrange the functions for removing forward declarations in dgnc_driver.c Signed-off-by: Daeseok Youn Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/dgnc/dgnc_driver.c b/drivers/staging/dgnc/dgnc_driver.c index d3243a3..6f2bffa 100644 --- a/drivers/staging/dgnc/dgnc_driver.c +++ b/drivers/staging/dgnc/dgnc_driver.c @@ -31,21 +31,6 @@ MODULE_AUTHOR("Digi International, http://www.digi.com"); MODULE_DESCRIPTION("Driver for the Digi International Neo and Classic PCI based product line"); MODULE_SUPPORTED_DEVICE("dgnc"); -/************************************************************************** - * - * protos for this file - * - */ -static int dgnc_start(void); -static int dgnc_request_irq(struct dgnc_board *brd); -static void dgnc_free_irq(struct dgnc_board *brd); -static struct dgnc_board *dgnc_found_board(struct pci_dev *pdev, int id); -static void dgnc_cleanup_board(struct dgnc_board *brd); -static void dgnc_poll_handler(ulong dummy); -static int dgnc_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent); -static int dgnc_do_remap(struct dgnc_board *brd); - /* * File operations permitted on Control/Management major. */ @@ -114,261 +99,23 @@ static const struct board_id dgnc_ids[] = { { NULL, 0, 0 } }; -static struct pci_driver dgnc_driver = { - .name = "dgnc", - .probe = dgnc_init_one, - .id_table = dgnc_pci_tbl, -}; - -/************************************************************************ - * - * Driver load/unload functions - * - ************************************************************************/ - -static void cleanup(bool sysfiles) -{ - int i; - unsigned long flags; - - spin_lock_irqsave(&dgnc_poll_lock, flags); - dgnc_poll_stop = 1; - spin_unlock_irqrestore(&dgnc_poll_lock, flags); - - /* Turn off poller right away. */ - del_timer_sync(&dgnc_poll_timer); - - if (sysfiles) - dgnc_remove_driver_sysfiles(&dgnc_driver); - - device_destroy(dgnc_class, MKDEV(dgnc_major, 0)); - class_destroy(dgnc_class); - unregister_chrdev(dgnc_major, "dgnc"); - - for (i = 0; i < dgnc_num_boards; ++i) { - dgnc_remove_ports_sysfiles(dgnc_board[i]); - dgnc_cleanup_tty(dgnc_board[i]); - dgnc_cleanup_board(dgnc_board[i]); - } - -} - -/* - * dgnc_cleanup_module() - * - * Module unload. This is where it all ends. - */ -static void __exit dgnc_cleanup_module(void) -{ - cleanup(true); - pci_unregister_driver(&dgnc_driver); -} - -/* - * init_module() - * - * Module load. This is where it all starts. - */ -static int __init dgnc_init_module(void) -{ - int rc; - - /* - * Initialize global stuff - */ - rc = dgnc_start(); - - if (rc < 0) - return rc; - - /* - * Find and configure all the cards - */ - rc = pci_register_driver(&dgnc_driver); - if (rc) { - pr_warn("WARNING: dgnc driver load failed. No Digi Neo or Classic boards found.\n"); - cleanup(false); - return rc; - } - dgnc_create_driver_sysfiles(&dgnc_driver); - - return 0; -} -module_init(dgnc_init_module); -module_exit(dgnc_cleanup_module); /* - * Start of driver. + * Remap PCI memory. */ -static int dgnc_start(void) +static int dgnc_do_remap(struct dgnc_board *brd) { int rc = 0; - unsigned long flags; - struct device *dev; - - /* make sure timer is initialized before we do anything else */ - init_timer(&dgnc_poll_timer); - - /* - * Register our base character device into the kernel. - * This allows the download daemon to connect to the downld device - * before any of the boards are init'ed. - * - * Register management/dpa devices - */ - rc = register_chrdev(0, "dgnc", &dgnc_board_fops); - if (rc < 0) { - pr_err(DRVSTR ": Can't register dgnc driver device (%d)\n", rc); - return rc; - } - dgnc_major = rc; - - dgnc_class = class_create(THIS_MODULE, "dgnc_mgmt"); - if (IS_ERR(dgnc_class)) { - rc = PTR_ERR(dgnc_class); - pr_err(DRVSTR ": Can't create dgnc_mgmt class (%d)\n", rc); - goto failed_class; - } - - dev = device_create(dgnc_class, NULL, - MKDEV(dgnc_major, 0), - NULL, "dgnc_mgmt"); - if (IS_ERR(dev)) { - rc = PTR_ERR(dev); - pr_err(DRVSTR ": Can't create device (%d)\n", rc); - goto failed_device; - } - - /* Start the poller */ - spin_lock_irqsave(&dgnc_poll_lock, flags); - setup_timer(&dgnc_poll_timer, dgnc_poll_handler, 0); - dgnc_poll_time = jiffies + dgnc_jiffies_from_ms(dgnc_poll_tick); - dgnc_poll_timer.expires = dgnc_poll_time; - spin_unlock_irqrestore(&dgnc_poll_lock, flags); - - add_timer(&dgnc_poll_timer); - - return 0; - -failed_device: - class_destroy(dgnc_class); -failed_class: - unregister_chrdev(dgnc_major, "dgnc"); - return rc; -} - -/* returns count (>= 0), or negative on error */ -static int dgnc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) -{ - int rc; - struct dgnc_board *brd; - - /* wake up and enable device */ - rc = pci_enable_device(pdev); - - if (rc) - return -EIO; - - brd = dgnc_found_board(pdev, ent->driver_data); - if (IS_ERR(brd)) - return PTR_ERR(brd); - - /* - * Do tty device initialization. - */ - - rc = dgnc_tty_register(brd); - if (rc < 0) { - pr_err(DRVSTR ": Can't register tty devices (%d)\n", rc); - goto failed; - } - - rc = dgnc_request_irq(brd); - if (rc < 0) { - pr_err(DRVSTR ": Can't finalize board init (%d)\n", rc); - goto unregister_tty; - } - - rc = dgnc_tty_init(brd); - if (rc < 0) { - pr_err(DRVSTR ": Can't init tty devices (%d)\n", rc); - goto free_irq; - } - - brd->state = BOARD_READY; - brd->dpastatus = BD_RUNNING; - - dgnc_create_ports_sysfiles(brd); - - dgnc_board[dgnc_num_boards++] = brd; - - return 0; - -free_irq: - dgnc_free_irq(brd); -unregister_tty: - dgnc_tty_unregister(brd); -failed: - kfree(brd); + brd->re_map_membase = ioremap(brd->membase, 0x1000); + if (!brd->re_map_membase) + rc = -ENOMEM; return rc; } /* - * dgnc_cleanup_board() - * - * Free all the memory associated with a board - */ -static void dgnc_cleanup_board(struct dgnc_board *brd) -{ - int i = 0; - - if (!brd || brd->magic != DGNC_BOARD_MAGIC) - return; - - switch (brd->device) { - case PCI_DEVICE_CLASSIC_4_DID: - case PCI_DEVICE_CLASSIC_8_DID: - case PCI_DEVICE_CLASSIC_4_422_DID: - case PCI_DEVICE_CLASSIC_8_422_DID: - - /* Tell card not to interrupt anymore. */ - outb(0, brd->iobase + 0x4c); - break; - - default: - break; - } - - if (brd->irq) - free_irq(brd->irq, brd); - - tasklet_kill(&brd->helper_tasklet); - - if (brd->re_map_membase) { - iounmap(brd->re_map_membase); - brd->re_map_membase = NULL; - } - - /* Free all allocated channels structs */ - for (i = 0; i < MAXPORTS ; i++) { - if (brd->channels[i]) { - kfree(brd->channels[i]->ch_rqueue); - kfree(brd->channels[i]->ch_equeue); - kfree(brd->channels[i]->ch_wqueue); - kfree(brd->channels[i]); - brd->channels[i] = NULL; - } - } - - dgnc_board[brd->boardnum] = NULL; - - kfree(brd); -} - -/* * dgnc_found_board() * * A board has been found, init it. @@ -574,20 +321,6 @@ static void dgnc_free_irq(struct dgnc_board *brd) } /* - * Remap PCI memory. - */ -static int dgnc_do_remap(struct dgnc_board *brd) -{ - int rc = 0; - - brd->re_map_membase = ioremap(brd->membase, 0x1000); - if (!brd->re_map_membase) - rc = -ENOMEM; - - return rc; -} - -/* * * Function: * @@ -656,3 +389,259 @@ static void dgnc_poll_handler(ulong dummy) if (!dgnc_poll_stop) add_timer(&dgnc_poll_timer); } + +/* returns count (>= 0), or negative on error */ +static int dgnc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + int rc; + struct dgnc_board *brd; + + /* wake up and enable device */ + rc = pci_enable_device(pdev); + + if (rc) + return -EIO; + + brd = dgnc_found_board(pdev, ent->driver_data); + if (IS_ERR(brd)) + return PTR_ERR(brd); + + /* + * Do tty device initialization. + */ + + rc = dgnc_tty_register(brd); + if (rc < 0) { + pr_err(DRVSTR ": Can't register tty devices (%d)\n", rc); + goto failed; + } + + rc = dgnc_request_irq(brd); + if (rc < 0) { + pr_err(DRVSTR ": Can't finalize board init (%d)\n", rc); + goto unregister_tty; + } + + rc = dgnc_tty_init(brd); + if (rc < 0) { + pr_err(DRVSTR ": Can't init tty devices (%d)\n", rc); + goto free_irq; + } + + brd->state = BOARD_READY; + brd->dpastatus = BD_RUNNING; + + dgnc_create_ports_sysfiles(brd); + + dgnc_board[dgnc_num_boards++] = brd; + + return 0; + +free_irq: + dgnc_free_irq(brd); +unregister_tty: + dgnc_tty_unregister(brd); + +failed: + kfree(brd); + + return rc; +} + +static struct pci_driver dgnc_driver = { + .name = "dgnc", + .probe = dgnc_init_one, + .id_table = dgnc_pci_tbl, +}; + +/* + * Start of driver. + */ +static int dgnc_start(void) +{ + int rc = 0; + unsigned long flags; + struct device *dev; + + /* make sure timer is initialized before we do anything else */ + init_timer(&dgnc_poll_timer); + + /* + * Register our base character device into the kernel. + * This allows the download daemon to connect to the downld device + * before any of the boards are init'ed. + * + * Register management/dpa devices + */ + rc = register_chrdev(0, "dgnc", &dgnc_board_fops); + if (rc < 0) { + pr_err(DRVSTR ": Can't register dgnc driver device (%d)\n", rc); + return rc; + } + dgnc_major = rc; + + dgnc_class = class_create(THIS_MODULE, "dgnc_mgmt"); + if (IS_ERR(dgnc_class)) { + rc = PTR_ERR(dgnc_class); + pr_err(DRVSTR ": Can't create dgnc_mgmt class (%d)\n", rc); + goto failed_class; + } + + dev = device_create(dgnc_class, NULL, + MKDEV(dgnc_major, 0), + NULL, "dgnc_mgmt"); + if (IS_ERR(dev)) { + rc = PTR_ERR(dev); + pr_err(DRVSTR ": Can't create device (%d)\n", rc); + goto failed_device; + } + + /* Start the poller */ + spin_lock_irqsave(&dgnc_poll_lock, flags); + setup_timer(&dgnc_poll_timer, dgnc_poll_handler, 0); + dgnc_poll_time = jiffies + dgnc_jiffies_from_ms(dgnc_poll_tick); + dgnc_poll_timer.expires = dgnc_poll_time; + spin_unlock_irqrestore(&dgnc_poll_lock, flags); + + add_timer(&dgnc_poll_timer); + + return 0; + +failed_device: + class_destroy(dgnc_class); +failed_class: + unregister_chrdev(dgnc_major, "dgnc"); + return rc; +} + +/* + * dgnc_cleanup_board() + * + * Free all the memory associated with a board + */ +static void dgnc_cleanup_board(struct dgnc_board *brd) +{ + int i = 0; + + if (!brd || brd->magic != DGNC_BOARD_MAGIC) + return; + + switch (brd->device) { + case PCI_DEVICE_CLASSIC_4_DID: + case PCI_DEVICE_CLASSIC_8_DID: + case PCI_DEVICE_CLASSIC_4_422_DID: + case PCI_DEVICE_CLASSIC_8_422_DID: + + /* Tell card not to interrupt anymore. */ + outb(0, brd->iobase + 0x4c); + break; + + default: + break; + } + + if (brd->irq) + free_irq(brd->irq, brd); + + tasklet_kill(&brd->helper_tasklet); + + if (brd->re_map_membase) { + iounmap(brd->re_map_membase); + brd->re_map_membase = NULL; + } + + /* Free all allocated channels structs */ + for (i = 0; i < MAXPORTS ; i++) { + if (brd->channels[i]) { + kfree(brd->channels[i]->ch_rqueue); + kfree(brd->channels[i]->ch_equeue); + kfree(brd->channels[i]->ch_wqueue); + kfree(brd->channels[i]); + brd->channels[i] = NULL; + } + } + + dgnc_board[brd->boardnum] = NULL; + + kfree(brd); +} + +/************************************************************************ + * + * Driver load/unload functions + * + ************************************************************************/ + +static void cleanup(bool sysfiles) +{ + int i; + unsigned long flags; + + spin_lock_irqsave(&dgnc_poll_lock, flags); + dgnc_poll_stop = 1; + spin_unlock_irqrestore(&dgnc_poll_lock, flags); + + /* Turn off poller right away. */ + del_timer_sync(&dgnc_poll_timer); + + if (sysfiles) + dgnc_remove_driver_sysfiles(&dgnc_driver); + + device_destroy(dgnc_class, MKDEV(dgnc_major, 0)); + class_destroy(dgnc_class); + unregister_chrdev(dgnc_major, "dgnc"); + + for (i = 0; i < dgnc_num_boards; ++i) { + dgnc_remove_ports_sysfiles(dgnc_board[i]); + dgnc_cleanup_tty(dgnc_board[i]); + dgnc_cleanup_board(dgnc_board[i]); + } + +} + +/* + * dgnc_cleanup_module() + * + * Module unload. This is where it all ends. + */ +static void __exit dgnc_cleanup_module(void) +{ + cleanup(true); + pci_unregister_driver(&dgnc_driver); +} + +/* + * init_module() + * + * Module load. This is where it all starts. + */ +static int __init dgnc_init_module(void) +{ + int rc; + + /* + * Initialize global stuff + */ + rc = dgnc_start(); + + if (rc < 0) + return rc; + + /* + * Find and configure all the cards + */ + rc = pci_register_driver(&dgnc_driver); + if (rc) { + pr_warn("WARNING: dgnc driver load failed. No Digi Neo or Classic boards found.\n"); + cleanup(false); + return rc; + } + dgnc_create_driver_sysfiles(&dgnc_driver); + + return 0; +} + +module_init(dgnc_init_module); +module_exit(dgnc_cleanup_module); + +