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Revert: ACPI / EC: Add support to disallow QR_EC to be issued before completing previous QR_EC

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This reverts commit 2dbfff81a4, which
really is commit 558e4736f2 upstream.

Sorry for the confusion, this got applied twice, and reverted once, this
is the second revert and I hope to never touch it again...

Reported-by: Lv Zheng <lv.zheng@intel.com>
Cc: Alexander Mezin <mezin.alexander@gmail.com>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman
2014-12-14 12:04:52 -08:00
parent ed6e7e6db0
commit 1c9e23ba8e
1 changed files with 2 additions and 2 deletions
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4
drivers/acpi/ec.c
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@@ -299,11 +299,11 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,
/* following two actions should be kept atomic */
ec->curr = t;
start_transaction(ec);
if (ec->curr->command == ACPI_EC_COMMAND_QUERY)
clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);
spin_unlock_irqrestore(&ec->lock, tmp);
ret = ec_poll(ec);
spin_lock_irqsave(&ec->lock, tmp);
if (ec->curr->command == ACPI_EC_COMMAND_QUERY)
clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);
ec->curr = NULL;
spin_unlock_irqrestore(&ec->lock, tmp);
return ret;