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authorInaky Perez-Gonzalez <inaky@linux.intel.com>2007-07-31 20:34:01 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2007-10-12 14:55:06 -0700
commit16bbab2966309ae82cda3d378964c56096d4858c (patch)
tree3ff9aee7f4d4752bc5c0392e19845eae00a1ab77 /drivers/usb
parentd7d07255d3f5607802b0af29e11448d18e9ed558 (diff)
usb: usb_set_configuration() obeys authorization
Will refuse to configure a non-authorized device. Update: simplified if statement--thanks to Ragner Magalhaes for the heads up. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/core/message.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index a26a7292b61..025ac0bd353 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -1483,6 +1483,9 @@ static struct usb_interface_assoc_descriptor *find_iad(struct usb_device *dev,
* channels are available independently; and choosing between open
* standard device protocols (like CDC) or proprietary ones.
*
+ * Note that a non-authorized device (dev->authorized == 0) will only
+ * be put in unconfigured mode.
+ *
* Note that USB has an additional level of device configurability,
* associated with interfaces. That configurability is accessed using
* usb_set_interface().
@@ -1504,7 +1507,7 @@ int usb_set_configuration(struct usb_device *dev, int configuration)
struct usb_interface **new_interfaces = NULL;
int n, nintf;
- if (configuration == -1)
+ if (dev->authorized == 0 || configuration == -1)
configuration = 0;
else {
for (i = 0; i < dev->descriptor.bNumConfigurations; i++) {