Re: patch for bugs 9998 and 10724

[Alexey Starikovskiy <astarikovskiy@suse.de>]

Zhao Yakui wrote:
> If the system is already switched to GPE mode, how to continue EC
> transaction if there is no GPE interrupt confirmation in some EC
> transaction? For example: on the laptops of bug 11428 & 8459. In fact
> sometimes there is no EC GPE interrupt confirmation only for the last
> step of EC transaction(OBF bit already indicates that data is ready but
> there is no EC interrupt).
You can't read, do you?

If the interrupt does not arrive for OBF in the middle of transaction,
transaction will be completed after the GPE_MODE is cleared in acpi_wait()
in a poll loop below, there is even a comment for that.

	/* start transaction */
	acpi_ec_write_cmd(ec, command);
>>>>>	/* if we selected poll mode or failed in GPE-mode do a poll loop */
	if (force_poll ||
	    !test_bit(EC_FLAGS_GPE_MODE, &ec->flags) ||
	    acpi_ec_wait(ec)) {
		delay = jiffies + msecs_to_jiffies(ACPI_EC_DELAY);
		while (time_before(jiffies, delay)) {
			gpe_transaction(ec, acpi_ec_read_status(ec));
			msleep(1);
			if (ec_transaction_done(ec))
				goto end;
		}
	}