As part of the removal of get_driver()/put_driver(), this patch (as1511) changes all the places that add dynamic IDs for drivers. Since these additions are done by writing to the drivers' sysfs attribute files, and the attributes are removed when the drivers are unregistered, there is no reason to take an extra reference to the drivers.
The one exception is the pci-stub driver, which calls pci_add_dynid() as part of its registration. But again, there's no reason to take an extra reference here, because the driver can't be unloaded while it is being registered. Signed-off-by: Alan Stern <st...@rowland.harvard.edu> CC: Dmitry Torokhov <dmitry.torok...@gmail.com> CC: Jiri Kosina <jkos...@suse.cz> CC: Jesse Barnes <jbar...@virtuousgeek.org> CC: Dominik Brodowski <li...@dominikbrodowski.net> --- drivers/hid/hid-core.c | 6 +----- drivers/pci/pci-driver.c | 2 -- drivers/pcmcia/ds.c | 5 +---- drivers/usb/core/driver.c | 5 +---- 4 files changed, 3 insertions(+), 15 deletions(-) Index: usb-3.3/drivers/hid/hid-core.c =================================================================== --- usb-3.3.orig/drivers/hid/hid-core.c +++ usb-3.3/drivers/hid/hid-core.c @@ -1619,11 +1619,7 @@ static ssize_t store_new_id(struct devic list_add_tail(&dynid->list, &hdrv->dyn_list); spin_unlock(&hdrv->dyn_lock); - ret = 0; - if (get_driver(&hdrv->driver)) { - ret = driver_attach(&hdrv->driver); - put_driver(&hdrv->driver); - } + ret = driver_attach(&hdrv->driver); return ret ? : count; } Index: usb-3.3/drivers/pci/pci-driver.c =================================================================== --- usb-3.3.orig/drivers/pci/pci-driver.c +++ usb-3.3/drivers/pci/pci-driver.c @@ -72,9 +72,7 @@ int pci_add_dynid(struct pci_driver *drv list_add_tail(&dynid->node, &drv->dynids.list); spin_unlock(&drv->dynids.lock); - get_driver(&drv->driver); retval = driver_attach(&drv->driver); - put_driver(&drv->driver); return retval; } Index: usb-3.3/drivers/pcmcia/ds.c =================================================================== --- usb-3.3.orig/drivers/pcmcia/ds.c +++ usb-3.3/drivers/pcmcia/ds.c @@ -127,10 +127,7 @@ pcmcia_store_new_id(struct device_driver list_add_tail(&dynid->node, &pdrv->dynids.list); mutex_unlock(&pdrv->dynids.lock); - if (get_driver(&pdrv->drv)) { - retval = driver_attach(&pdrv->drv); - put_driver(&pdrv->drv); - } + retval = driver_attach(&pdrv->drv); if (retval) return retval; Index: usb-3.3/drivers/usb/core/driver.c =================================================================== --- usb-3.3.orig/drivers/usb/core/driver.c +++ usb-3.3/drivers/usb/core/driver.c @@ -71,10 +71,7 @@ ssize_t usb_store_new_id(struct usb_dyni list_add_tail(&dynid->node, &dynids->list); spin_unlock(&dynids->lock); - if (get_driver(driver)) { - retval = driver_attach(driver); - put_driver(driver); - } + retval = driver_attach(driver); if (retval) return retval; _______________________________________________ Linux PCMCIA reimplementation list http://lists.infradead.org/mailman/listinfo/linux-pcmcia