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authorAlan Stern <stern@rowland.harvard.edu>2008-04-04 23:46:59 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2008-04-24 21:16:48 -0700
commit61a5c657892a43653d6189972159590751a0673e (patch)
tree3e3da283513b7cde81c0ccd5a67692500a196afb /drivers/usb/core
parent96e12fced365262e185a8e935db23973337b8a2a (diff)
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 <stern@rowland.harvard.edu> Tested-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core')
-rw-r--r--drivers/usb/core/message.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index a3695b5115f..5b23f6b017d 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.