diff options
Diffstat (limited to 'drivers/pnp/driver.c')
| -rw-r--r-- | drivers/pnp/driver.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c index 913d926f8ba..30b8f6f3258 100644 --- a/drivers/pnp/driver.c +++ b/drivers/pnp/driver.c @@ -2,7 +2,6 @@ * driver.c - device id matching, driver model, etc. * * Copyright 2002 Adam Belay <ambx1@neo.rr.com> - * */ #include <linux/string.h> @@ -16,6 +15,7 @@ static int compare_func(const char *ida, const char *idb) { int i; + /* we only need to compare the last 4 chars */ for (i = 3; i < 7; i++) { if (ida[i] != 'X' && @@ -44,6 +44,7 @@ static const struct pnp_device_id *match_device(struct pnp_driver *drv, struct pnp_dev *dev) { const struct pnp_device_id *drv_id = drv->id_table; + if (!drv_id) return NULL; @@ -140,6 +141,7 @@ static int pnp_bus_match(struct device *dev, struct device_driver *drv) { struct pnp_dev *pnp_dev = to_pnp_dev(dev); struct pnp_driver *pnp_drv = to_pnp_driver(drv); + if (match_device(pnp_drv, pnp_dev) == NULL) return 0; return 1; @@ -197,12 +199,12 @@ static int pnp_bus_resume(struct device *dev) } struct bus_type pnp_bus_type = { - .name = "pnp", - .match = pnp_bus_match, - .probe = pnp_device_probe, - .remove = pnp_device_remove, + .name = "pnp", + .match = pnp_bus_match, + .probe = pnp_device_probe, + .remove = pnp_device_remove, .suspend = pnp_bus_suspend, - .resume = pnp_bus_resume, + .resume = pnp_bus_resume, }; int pnp_register_driver(struct pnp_driver *drv) @@ -225,12 +227,11 @@ void pnp_unregister_driver(struct pnp_driver *drv) * pnp_add_id - adds an EISA id to the specified device * @id: pointer to a pnp_id structure * @dev: pointer to the desired device - * */ - int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev) { struct pnp_id *ptr; + if (!id) return -EINVAL; if (!dev) @@ -248,8 +249,5 @@ int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev) EXPORT_SYMBOL(pnp_register_driver); EXPORT_SYMBOL(pnp_unregister_driver); -#if 0 -EXPORT_SYMBOL(pnp_add_id); -#endif EXPORT_SYMBOL(pnp_device_attach); EXPORT_SYMBOL(pnp_device_detach); |