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Commit e12ac3d0 authored by Alexey Starikovskiy's avatar Alexey Starikovskiy Committed by Len Brown
Browse files

ACPI: EC: Restart command even if no interrupts from EC 

EC may forget a command without sending any "reset" interrupt,
thus we need to lessen the requirement for transaction restart.

Reference: http://bugzilla.kernel.org/show_bug.cgi?id=14247


Signed-off-by: default avatarAlexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 0efe5e32

drivers/acpi/ec.c

+1 −3
Original line number Diff line number Diff line
@@ -232,10 +232,8 @@ static int ec_poll(struct acpi_ec *ec) 
			}

			advance_transaction(ec, acpi_ec_read_status(ec));

		} while (time_before(jiffies, delay));

		if (!ec->curr->irq_count ||

		    (acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF))

		if (acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF)

			break;

		/* try restart command if we get any false interrupts */

		pr_debug(PREFIX "controller reset, restart transaction\n");

		spin_lock_irqsave(&ec->curr_lock, flags);

		start_transaction(ec);