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Revert "USB: core: only clean up what we allocated"
authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 13 Dec 2017 10:59:39 +0000 (11:59 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 3 Apr 2019 04:24:20 +0000 (06:24 +0200)
commit cf4df407e0d7cde60a45369c2a3414d18e2d4fdd upstream.

This reverts commit 32fd87b3bbf5f7a045546401dfe2894dbbf4d8c3.

Alan wrote a better fix for this...

Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: stable <stable@vger.kernel.org>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/core/config.c

index c6578b3..5e6136d 100644 (file)
@@ -763,21 +763,18 @@ void usb_destroy_configuration(struct usb_device *dev)
                return;
 
        if (dev->rawdescriptors) {
-               for (i = 0; i < dev->descriptor.bNumConfigurations &&
-                               i < USB_MAXCONFIG; i++)
+               for (i = 0; i < dev->descriptor.bNumConfigurations; i++)
                        kfree(dev->rawdescriptors[i]);
 
                kfree(dev->rawdescriptors);
                dev->rawdescriptors = NULL;
        }
 
-       for (c = 0; c < dev->descriptor.bNumConfigurations &&
-                       c < USB_MAXCONFIG; c++) {
+       for (c = 0; c < dev->descriptor.bNumConfigurations; c++) {
                struct usb_host_config *cf = &dev->config[c];
 
                kfree(cf->string);
-               for (i = 0; i < cf->desc.bNumInterfaces &&
-                               i < USB_MAXINTERFACES; i++) {
+               for (i = 0; i < cf->desc.bNumInterfaces; i++) {
                        if (cf->intf_cache[i])
                                kref_put(&cf->intf_cache[i]->ref,
                                          usb_release_interface_cache);