usb: deal with broken config descriptors
Change usb_get_configuration() so that it is more tolerant to devices
with bad configuration descriptors (it'll make it ignore
configurations that fail to load).
Signed-off-by: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index 4c9e63e..bfb3731 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -475,7 +475,9 @@
if (result < 0) {
dev_err(ddev, "unable to read config index %d "
"descriptor/%s\n", cfgno, "start");
- goto err;
+ dev_err(ddev, "chopping to %d config(s)\n", cfgno);
+ dev->descriptor.bNumConfigurations = cfgno;
+ break;
} else if (result < 4) {
dev_err(ddev, "config index %d descriptor too short "
"(expected %i, got %i)\n", cfgno,