diff options
| -rw-r--r-- | drivers/char/stallion.c | 81 |
1 files changed, 52 insertions, 29 deletions
diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c index 4ccf4a5..7612464 100644 --- a/drivers/char/stallion.c +++ b/drivers/char/stallion.c @@ -143,6 +143,8 @@ static struct stlbrd *stl_brds[STL_MAXBRDS]; * Not really much here! */ #define BRD_FOUND 0x1 +#define STL_PROBED 0x2 + /* * Define the port structure istate flags. These set of flags are @@ -2388,6 +2390,7 @@ static int __devinit stl_pciprobe(struct pci_dev *pdev, goto err_fr; } brdp->brdtype = brdtype; + brdp->state |= STL_PROBED; /* * We have all resources from the board, so let's setup the actual @@ -4677,6 +4680,28 @@ static void stl_sc26198otherisr(struct stlport *portp, unsigned int iack) } } +static void stl_free_isabrds(void) +{ + struct stlbrd *brdp; + unsigned int i; + + for (i = 0; i < stl_nrbrds; i++) { + if ((brdp = stl_brds[i]) == NULL || (brdp->state & STL_PROBED)) + continue; + + free_irq(brdp->irq, brdp); + + stl_cleanup_panels(brdp); + + release_region(brdp->ioaddr1, brdp->iosize1); + if (brdp->iosize2 > 0) + release_region(brdp->ioaddr2, brdp->iosize2); + + kfree(brdp); + stl_brds[i] = NULL; + } +} + /* * Loadable module initialization stuff. */ @@ -4684,7 +4709,8 @@ static int __init stallion_module_init(void) { struct stlbrd *brdp; struct stlconf conf; - unsigned int i, retval; + unsigned int i; + int retval; printk(KERN_INFO "%s: version %s\n", stl_drvtitle, stl_drvversion); @@ -4714,12 +4740,14 @@ static int __init stallion_module_init(void) } retval = pci_register_driver(&stl_pcidriver); - if (retval) + if (retval && stl_nrbrds == 0) goto err; stl_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS); - if (!stl_serial) - return -1; + if (!stl_serial) { + retval = -ENOMEM; + goto err_pcidr; + } /* * Set up a character driver for per board stuff. This is mainly used @@ -4729,6 +4757,10 @@ static int __init stallion_module_init(void) printk("STALLION: failed to register serial board device\n"); stallion_class = class_create(THIS_MODULE, "staliomem"); + if (IS_ERR(stallion_class)) { + retval = PTR_ERR(stallion_class); + goto err_reg; + } for (i = 0; i < 4; i++) class_device_create(stallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i), NULL, @@ -4745,20 +4777,29 @@ static int __init stallion_module_init(void) stl_serial->flags = TTY_DRIVER_REAL_RAW; tty_set_operations(stl_serial, &stl_ops); - if (tty_register_driver(stl_serial)) { - put_tty_driver(stl_serial); + retval = tty_register_driver(stl_serial); + if (retval) { printk("STALLION: failed to register serial driver\n"); - return -1; + goto err_clsdev; } return 0; +err_clsdev: + for (i = 0; i < 4; i++) + class_device_destroy(stallion_class, MKDEV(STL_SIOMEMMAJOR, i)); + class_destroy(stallion_class); +err_reg: + unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"); + put_tty_driver(stl_serial); +err_pcidr: + pci_unregister_driver(&stl_pcidriver); + stl_free_isabrds(); err: return retval; } static void __exit stallion_module_exit(void) { - struct stlbrd *brdp; int i; pr_debug("cleanup_module()\n"); @@ -4772,13 +4813,9 @@ static void __exit stallion_module_exit(void) * a hangup on every open port - to try to flush out any processes * hanging onto ports. */ - i = tty_unregister_driver(stl_serial); + tty_unregister_driver(stl_serial); put_tty_driver(stl_serial); - if (i) { - printk("STALLION: failed to un-register tty driver, " - "errno=%d\n", -i); - return; - } + for (i = 0; i < 4; i++) class_device_destroy(stallion_class, MKDEV(STL_SIOMEMMAJOR, i)); if ((i = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"))) @@ -4788,21 +4825,7 @@ static void __exit stallion_module_exit(void) pci_unregister_driver(&stl_pcidriver); - for (i = 0; (i < stl_nrbrds); i++) { - if ((brdp = stl_brds[i]) == NULL) - continue; - - free_irq(brdp->irq, brdp); - - stl_cleanup_panels(brdp); - - release_region(brdp->ioaddr1, brdp->iosize1); - if (brdp->iosize2 > 0) - release_region(brdp->ioaddr2, brdp->iosize2); - - kfree(brdp); - stl_brds[i] = NULL; - } + stl_free_isabrds(); } module_init(stallion_module_init); |