"Aneesh Kumar K.V (IBM)" [off-list ref] writes:

Nathan Lynch via B4 Relay [off-list ref]
writes:

quoted

There should be no perceivable change introduced here except that
concurrent callers of the same RTAS function via sys_rtas() may block
on a mutex instead of spinning on rtas_lock. Changes to follow will
add rtas_function_lock()/unlock() pairs to kernel-based call
sequences.

Can you add an example of the last part. I did look at to find 06 to
find the details

	rtas_function_lock(RTAS_FN_IBM_ACTIVATE_FIRMWARE);

	do {
		fwrc = rtas_call(token, 0, 1, NULL);
	} while (rtas_busy_delay(fwrc));

	rtas_function_unlock(RTAS_FN_IBM_ACTIVATE_FIRMWARE);

Sure, I'll add a simple example of the API usage in the commit message,
thanks.