rtl8187 usb wifi adaptor causes suspend hang

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[lsusb: ID 0bda:8187 Realtek Semiconductor Corp]


I'd like to use this wireless adaptor I have, but the driver doesn't
play nice with suspend.  It hangs after switching to the console,
without printing anything.  This happens even if I haven't used the
adaptor (i.e. ifconfig shows 0 bytes rx/tx).  Interestingly the numlock
key on my USB keyboard still works.

I tried "no_console_suspend nmi_watchdog=1", but it didn't show any more
output.  (I waited 3 minutes for the watchdog to trigger).

However, I can insert panic() calls, and see whether I hit the hang
first, or go into a panic with flashing keyboard LEDs.  I used this to
confirm that the hang happens inside the rtl8187_disconnect() function.

There's a good chance I can track this down myself, using panic()
again.  Before I start, does anyone have an idea what might be happening?

Ta
Alan
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