diff options
| author | David Brownell <david-b@pacbell.net> | 2006-12-05 03:15:33 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-12-20 10:14:26 -0800 |
| commit | 6bea476cf628eb7bb18a036ac6a8fed1ad319951 (patch) | |
| tree | 1d73df1432d393ecf82c16604fa40f0f8a1aa581 /drivers/usb/gadget/pxa2xx_udc.c | |
| parent | 5f8364b7d63acdc2216ca0f7d0a8557c318479ea (diff) | |
| download | kernel_samsung_smdk4412-6bea476cf628eb7bb18a036ac6a8fed1ad319951.tar.gz kernel_samsung_smdk4412-6bea476cf628eb7bb18a036ac6a8fed1ad319951.tar.bz2 kernel_samsung_smdk4412-6bea476cf628eb7bb18a036ac6a8fed1ad319951.zip | |
USB: gadget driver unbind() is optional; section fixes; misc
Allow gadget drivers to omit the unbind() method. When they're
statically linked, that's an appropriate memory saving tweak.
Similarly, provide consistent/simpler handling for a should-not-happen
error case: removing a peripheral controller driver when a gadget
driver is still loaded. Such code dates back to early versions of the
first implementation of the gadget API, and has never been triggered.
Includes relevant section annotation fixs for gmidi.c, file_storage.c,
and serial.c; we don't yet have an "init or exit" annotation. Also
some whitespace fixes in gmidi.c (space at EOL, before tabs, etc).
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget/pxa2xx_udc.c')
| -rw-r--r-- | drivers/usb/gadget/pxa2xx_udc.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/usb/gadget/pxa2xx_udc.c b/drivers/usb/gadget/pxa2xx_udc.c index 1ed506e9598..b78de969466 100644 --- a/drivers/usb/gadget/pxa2xx_udc.c +++ b/drivers/usb/gadget/pxa2xx_udc.c @@ -1623,7 +1623,6 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver) if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind - || !driver->unbind || !driver->disconnect || !driver->setup) return -EINVAL; @@ -1694,7 +1693,7 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) if (!dev) return -ENODEV; - if (!driver || driver != dev->driver) + if (!driver || driver != dev->driver || !driver->unbind) return -EINVAL; local_irq_disable(); @@ -2638,9 +2637,11 @@ static int __exit pxa2xx_udc_remove(struct platform_device *pdev) { struct pxa2xx_udc *dev = platform_get_drvdata(pdev); + if (dev->driver) + return -EBUSY; + udc_disable(dev); remove_proc_files(); - usb_gadget_unregister_driver(dev->driver); if (dev->got_irq) { free_irq(IRQ_USB, dev); |