log:
[53614.238023] Compat-wireless backport release: compat-wireless-v3.2-1-s
[53614.244729] Backport based on linux-stable.git v3.2
[53614.368074] alg: No test for arc4 (arc4-generic)
[53614.402781] cfg80211: Calling CRDA to update world regulatory domain
[53614.498603] rtl8192cu 3-3:1.0: usb_probe_interface
[53614.503552] rtl8192cu 3-3:1.0: usb_probe_interface - got id
[53614.509920] rtl8192cu: rtl8192cu: Chip version 0x11
[53615.359336] rtl8192cu: MAC address: 08:10:74:f1:a1:0f
[53615.364575] rtl8192cu: Board Type 0
[53615.400583] rtlwifi: rx_max_size 15360, rx_urb_num 8, in_ep 1
[53615.408918] usbcore: registered new interface driver rtl8192cu
[53652.483311] rtl8192cu: MAC auto ON okay!
[53652.887348] rtl8192cu: Tx queue select: 0x05
[53652.921326] rtl8192c_common: Loading firmware file rtlwifi/rtl8192cufw.bin

And I'm sure the function rtl_block_fw_writeN is used for firmware uploading.

On 8 March 2012 10:03, jerome huang [off-list ref] wrote:

Hi,

I found a problem just like in the older discussion "Question about
error from xhci-hcd",
there was a xhci error "no room on ep ring" when plugin rtl8192cu on USB3.
(it works on USB2)

After applying Larry's patch "rtlwifi: rtl8192cu: Change firmware
upload to use block writes",
I still get the same error "no room on ep ring".

But under the same compat-wireless version,
rt8712 works on USB3.

Does anyone still encounter this problem after applying this patch?
or do I miss something/patches?

BR,
Jerome