From: Alan Stern Date: Sat, 5 Apr 2008 03:46:59 +0000 (-0400) Subject: USB: rework sysfs removal of interface files X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=61a5c657892a43653d6189972159590751a0673e;p=linux-beck.git USB: rework sysfs removal of interface files Removing an interface's sysfs files before unregistering the interface doesn't work properly, because usb_unbind_interface() will reinstall altsetting 0 and thereby create new sysfs files. This patch (as1074) removes the files after the unregistration is finished. It's not quite as clean, but at least it works. Also, there's no need to check if an interface has been registered before removing its sysfs files. If it hasn't been registered then the files won't have been created, so usb_remove_sysfs_intf_files() will simply do nothing. Signed-off-by: Alan Stern Tested-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index a3695b5115ff..5b23f6b017d7 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -1089,8 +1089,8 @@ void usb_disable_device(struct usb_device *dev, int skip_ep0) continue; dev_dbg(&dev->dev, "unregistering interface %s\n", interface->dev.bus_id); - usb_remove_sysfs_intf_files(interface); device_del(&interface->dev); + usb_remove_sysfs_intf_files(interface); } /* Now that the interfaces are unbound, nobody should @@ -1231,7 +1231,7 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate) */ /* prevent submissions using previous endpoint settings */ - if (iface->cur_altsetting != alt && device_is_registered(&iface->dev)) + if (iface->cur_altsetting != alt) usb_remove_sysfs_intf_files(iface); usb_disable_interface(dev, iface); @@ -1330,8 +1330,7 @@ int usb_reset_configuration(struct usb_device *dev) struct usb_interface *intf = config->interface[i]; struct usb_host_interface *alt; - if (device_is_registered(&intf->dev)) - usb_remove_sysfs_intf_files(intf); + usb_remove_sysfs_intf_files(intf); alt = usb_altnum_to_altsetting(intf, 0); /* No altsetting 0? We'll assume the first altsetting.