The index for r8188eu's vendor-specific control requests is not used.
Remove the index parameter from usbctrl_vendorreq and pass index 0 to
usb_control_msg.
This patch is an adaptation of commit 3d0be94f62fd ("staging: rtl8188eu:
ctrl vendor req index is not used") for the new r8188eu driver.
Link: https://lore.kernel.org/r/20210818200041.10870-2-martin@kaiser.cx
Version information: 20140812_rtl8192EU_linux_v4.3.1.1_11320
2014-08-12
version 4.3.1.1_11320
Source:
ftp://files.dlink.com.au/products/DWA-131/REV_E/Drivers/DWA-131_Linux_driver_v4.3.1.1.zip
This version does not currently work on newer kernels, but it does
contain USB ID 2001:3319, which a lot of other repos in GitHub does not.