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| author | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2011-12-21 10:19:40 +0200 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2012-01-24 15:41:57 +0200 |
| commit | 37fd37108449d574da11aa9055c5c8afb39ff226 (patch) | |
| tree | d3ffd76832f21aaed75f3403d787d6edd32742c8 /drivers/usb | |
| parent | 28bd6222544d7559edf9ff487172e45ce46e2578 (diff) | |
| download | linux-stable-37fd37108449d574da11aa9055c5c8afb39ff226.tar.gz linux-stable-37fd37108449d574da11aa9055c5c8afb39ff226.tar.bz2 linux-stable-37fd37108449d574da11aa9055c5c8afb39ff226.zip | |
usb: gadget: langwell: don't call gadget's disconnect()
UDC core will call disconnect() and unbind() for us upon the gadget
removal, so we should not do it ourselves. Otherwise, a composite
gadget will explode, for example. Others might too.
This was introduced during conversion to new style gadget in 2c7f0989
(usb: gadget: langwell: convert to new style).
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: stable@vger.kernel.org # v3.2
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/langwell_udc.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c index 34e3bf877341..e2293c1588ee 100644 --- a/drivers/usb/gadget/langwell_udc.c +++ b/drivers/usb/gadget/langwell_udc.c @@ -1517,8 +1517,7 @@ static void langwell_udc_stop(struct langwell_udc *dev) /* stop all USB activities */ -static void stop_activity(struct langwell_udc *dev, - struct usb_gadget_driver *driver) +static void stop_activity(struct langwell_udc *dev) { struct langwell_ep *ep; dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__); @@ -1530,9 +1529,9 @@ static void stop_activity(struct langwell_udc *dev, } /* report disconnect; the driver is already quiesced */ - if (driver) { + if (dev->driver) { spin_unlock(&dev->lock); - driver->disconnect(&dev->gadget); + dev->driver->disconnect(&dev->gadget); spin_lock(&dev->lock); } @@ -1920,11 +1919,10 @@ static int langwell_stop(struct usb_gadget *g, /* stop all usb activities */ dev->gadget.speed = USB_SPEED_UNKNOWN; - stop_activity(dev, driver); - spin_unlock_irqrestore(&dev->lock, flags); - dev->gadget.dev.driver = NULL; dev->driver = NULL; + stop_activity(dev); + spin_unlock_irqrestore(&dev->lock, flags); device_remove_file(&dev->pdev->dev, &dev_attr_function); @@ -2724,7 +2722,7 @@ static void handle_usb_reset(struct langwell_udc *dev) dev->bus_reset = 1; /* reset all the queues, stop all USB activities */ - stop_activity(dev, dev->driver); + stop_activity(dev); dev->usb_state = USB_STATE_DEFAULT; } else { dev_vdbg(&dev->pdev->dev, "device controller reset\n"); @@ -2732,7 +2730,7 @@ static void handle_usb_reset(struct langwell_udc *dev) langwell_udc_reset(dev); /* reset all the queues, stop all USB activities */ - stop_activity(dev, dev->driver); + stop_activity(dev); /* reset ep0 dQH and endptctrl */ ep0_reset(dev); @@ -3290,7 +3288,7 @@ static int langwell_udc_suspend(struct pci_dev *pdev, pm_message_t state) spin_lock_irq(&dev->lock); /* stop all usb activities */ - stop_activity(dev, dev->driver); + stop_activity(dev); spin_unlock_irq(&dev->lock); /* free dTD dma_pool and dQH */ |