ChangeSet 1.1504.2.46, 2003/12/12 11:57:12-08:00, [EMAIL PROTECTED]
[PATCH] USB: Allow configuration #0
This patch helped Jon Wilson. It allows devices to have a configuration
numbered 0, in spite of the standard convention that config #0 really
means unconfigured.
drivers/usb/core/message.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletion(-)
diff -Nru a/drivers/usb/core/message.c b/drivers/usb/core/message.c
--- a/drivers/usb/core/message.c Mon Dec 29 14:21:51 2003
+++ b/drivers/usb/core/message.c Mon Dec 29 14:21:51 2003
@@ -1086,6 +1086,11 @@
ret = -EINVAL;
goto out;
}
+
+ /* The USB spec says configuration 0 means unconfigured.
+ * But if a device includes a configuration numbered 0,
+ * we will accept it as a correctly configured state.
+ */
if (cp && configuration == 0)
dev_warn(&dev->dev, "config 0 descriptor??\n");
@@ -1101,7 +1106,7 @@
goto out;
dev->actconfig = cp;
- if (!configuration)
+ if (!cp)
dev->state = USB_STATE_ADDRESS;
else {
dev->state = USB_STATE_CONFIGURED;
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