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| author | Patrik Sevallius <patrik.sevallius@enea.com> | 2007-11-20 09:32:00 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-02-01 14:34:52 -0800 |
| commit | eb0be47dbbdca133b1b94adc564297f25176b3ab (patch) | |
| tree | 29b36900829961e7117706a43e4217fef64edee5 /drivers/usb/gadget | |
| parent | 7b62cc86689e721f0aae87e88cb04ca841cf6c38 (diff) | |
| download | kernel_samsung_smdk4412-eb0be47dbbdca133b1b94adc564297f25176b3ab.zip kernel_samsung_smdk4412-eb0be47dbbdca133b1b94adc564297f25176b3ab.tar.gz kernel_samsung_smdk4412-eb0be47dbbdca133b1b94adc564297f25176b3ab.tar.bz2 | |
USB: usb peripheral controller driver oops avoidance
I'm having problem with oopses when rebooting, if I modprobe g_serial
and rmmod g_serial and do a reboot I get an oops in device_shutdown().
The reason seems to be that usb_gadget_unregister_driver() doesn't do
enough cleanup. With this at91_udc patch I don't get the oops.
Signed-off-by: Patrik Sevallius <patrik.sevallius@enea.com>
[ Same bug was in other peripheral controller drivers; fixed ]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/amd5536udc.c | 1 | ||||
| -rw-r--r-- | drivers/usb/gadget/at91_udc.c | 2 | ||||
| -rw-r--r-- | drivers/usb/gadget/goku_udc.c | 1 | ||||
| -rw-r--r-- | drivers/usb/gadget/lh7a40x_udc.c | 1 | ||||
| -rw-r--r-- | drivers/usb/gadget/m66592-udc.c | 1 | ||||
| -rw-r--r-- | drivers/usb/gadget/pxa2xx_udc.c | 1 |
6 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/gadget/amd5536udc.c b/drivers/usb/gadget/amd5536udc.c index 66e10da..b663f23 100644 --- a/drivers/usb/gadget/amd5536udc.c +++ b/drivers/usb/gadget/amd5536udc.c @@ -2038,6 +2038,7 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) spin_unlock_irqrestore(&dev->lock, flags); driver->unbind(&dev->gadget); + dev->gadget.dev.driver = NULL; dev->driver = NULL; /* set SD */ diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index cd62b02..4b6ed35 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -1616,6 +1616,8 @@ int usb_gadget_unregister_driver (struct usb_gadget_driver *driver) local_irq_enable(); driver->unbind(&udc->gadget); + udc->gadget.dev.driver = NULL; + udc->gadget.dev.driver_data = NULL; udc->driver = NULL; DBG("unbound from %s\n", driver->driver.name); diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c index 2ec9d19..d3e7025 100644 --- a/drivers/usb/gadget/goku_udc.c +++ b/drivers/usb/gadget/goku_udc.c @@ -1422,6 +1422,7 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) spin_unlock_irqrestore(&dev->lock, flags); driver->unbind(&dev->gadget); + dev->gadget.dev.driver = NULL; DBG(dev, "unregistered driver '%s'\n", driver->driver.name); return 0; diff --git a/drivers/usb/gadget/lh7a40x_udc.c b/drivers/usb/gadget/lh7a40x_udc.c index 367b75c..37243ef 100644 --- a/drivers/usb/gadget/lh7a40x_udc.c +++ b/drivers/usb/gadget/lh7a40x_udc.c @@ -474,6 +474,7 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) spin_unlock_irqrestore(&dev->lock, flags); driver->unbind(&dev->gadget); + dev->gadget.dev.driver = NULL; device_del(&dev->gadget.dev); udc_disable(dev); diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c index 43f0218..835948f 100644 --- a/drivers/usb/gadget/m66592-udc.c +++ b/drivers/usb/gadget/m66592-udc.c @@ -1508,6 +1508,7 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) m66592_bclr(m66592, M66592_VBSE | M66592_URST, M66592_INTENB0); driver->unbind(&m66592->gadget); + m66592->gadget.dev.driver = NULL; init_controller(m66592); disable_controller(m66592); diff --git a/drivers/usb/gadget/pxa2xx_udc.c b/drivers/usb/gadget/pxa2xx_udc.c index 8c139d4..4abf9d2 100644 --- a/drivers/usb/gadget/pxa2xx_udc.c +++ b/drivers/usb/gadget/pxa2xx_udc.c @@ -1345,6 +1345,7 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) local_irq_enable(); driver->unbind(&dev->gadget); + dev->gadget.dev.driver = NULL; dev->driver = NULL; device_del (&dev->gadget.dev); |