Messages in this thread Patch in this message | | | Date | Thu, 27 Mar 2003 18:32:45 +0100 | From | Dominik Brodowski <> | Subject | [PATCH 2.5] pcmcia: fix pcmcia_bind_driver |
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Don't allow "bind_request" to be called before "register_pccard_driver".
Dominik
diff -ruN linux-original/drivers/pcmcia/ds.c linux/drivers/pcmcia/ds.c --- linux-original/drivers/pcmcia/ds.c 2003-03-27 18:21:51.000000000 +0100 +++ linux/drivers/pcmcia/ds.c 2003-03-27 18:25:36.000000000 +0100 @@ -188,35 +188,21 @@ void (*detach)(dev_link_t *)) { struct pcmcia_driver *driver; - socket_bind_t *b; - struct pcmcia_bus_socket *bus_sock; DEBUG(0, "ds: register_pccard_driver('%s')\n", (char *)dev_info); driver = get_pcmcia_driver(dev_info); - if (!driver) { - driver = kmalloc(sizeof(struct pcmcia_driver), GFP_KERNEL); - if (!driver) return -ENOMEM; - memset(driver, 0, sizeof(struct pcmcia_driver)); - driver->drv.name = (char *)dev_info; - pcmcia_register_driver(driver); - } + if (driver) + return -EBUSY; + + driver = kmalloc(sizeof(struct pcmcia_driver), GFP_KERNEL); + if (!driver) return -ENOMEM; + memset(driver, 0, sizeof(struct pcmcia_driver)); + driver->drv.name = (char *)dev_info; + pcmcia_register_driver(driver); driver->attach = attach; driver->detach = detach; - if (driver->use_count == 0) return 0; - - /* Instantiate any already-bound devices */ - down_read(&bus_socket_list_rwsem); - list_for_each_entry(bus_sock, &bus_socket_list, socket_list) { - for (b = bus_sock->bind; b; b = b->next) { - if (b->driver != driver) continue; - b->instance = driver->attach(); - if (b->instance == NULL) - printk(KERN_NOTICE "ds: unable to create instance " - "of '%s'!\n", driver->drv.name); - } - } - up_read(&bus_socket_list_rwsem); + return 0; } /* register_pccard_driver */ @@ -414,13 +400,8 @@ DEBUG(2, "bind_request(%d, '%s')\n", i, (char *)bind_info->dev_info); driver = get_pcmcia_driver(&bind_info->dev_info); - if (driver == NULL) { - driver = kmalloc(sizeof(struct pcmcia_driver), GFP_KERNEL); - if (!driver) return -ENOMEM; - memset(driver, 0, sizeof(struct pcmcia_driver)); - driver->drv.name = bind_info->dev_info; - pcmcia_register_driver(driver); - } + if (!driver) + return -EINVAL; for (b = s->bind; b; b = b->next) if ((driver == b->driver) && - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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