From 61a5c657892a43653d6189972159590751a0673e Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 4 Apr 2008 23:46:59 -0400 Subject: [PATCH] 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 --- drivers/usb/core/message.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index a3695b5115..5b23f6b017 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. -- 2.39.5