Ok, I agree!
I've created a step by step workaround process.
Step 0. You encounter "husb: ctrl buffer too small" error message during
kvm start.
Step 1. Fix kvm bug in usb-linux.c source with this patch
diff --git a/usb-linux.c b/usb-linux.c
index ba8facf..122cdbf 100644
--- a/usb-linux.c
+++ b/usb-linux.c
@@ -113,7 +113,7 @@ struct ctrl_struct {
uint16_t offset;
uint8_t state;
struct usb_ctrlrequest req;
- uint8_t buffer[2048];
+ uint8_t buffer[8192];
};
struct USBAutoFilter {
Step 2. Build kvm from source.
Step 3. If kvm GuestOS doesn't see your USB device: *uncheck* "Enable
advanced network functionality" on (Start menu -> Settings ->
Connections -> USBtoPC) your USB device. (If this menu exists on your
device)
Step 4. Try to attach USB device to your GuestOS with similar command:
kvm -m 1024 -k hu -usb --usbdevice host:045e:00ce GuestOS.img
(lsusb command helps to figure out device ID)
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https://bugs.launchpad.net/bugs/790145
Title:
kvm husb: ctrl buffer too small
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