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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-07-12 22:03:14 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-07-12 22:03:14 +0200 |
| commit | d0420d20bacd1eef9f75a769ad48befd383ad190 (patch) | |
| tree | dbaaee49ccfe4414a35f674eff93b20e07d9aab5 | |
| parent | 00c611def8748a0a1cf1d31842e49b42dfdb3de1 (diff) | |
| parent | fa5b4a509d7bbba5d45c8ea177bddfd0b618876a (diff) | |
| download | linux-xen-d0420d20bacd1eef9f75a769ad48befd383ad190.tar.gz | |
Merge branches 'acpica-fixes' and 'acpi-ec-fixes'
* acpica-fixes:
Revert "ACPI 2.0 / AML: Improve module level execution by moving the If/Else/While execution to per-table basis"
Revert "ACPICA: Namespace: Fix deadlock triggered by MLC support in dynamic table loading"
Revert "ACPICA: Namespace: Fix namespace/interpreter lock ordering"
* acpi-ec-fixes:
ACPI / EC: Fix code ordering issue in ec_remove_handlers()
| -rw-r--r-- | drivers/acpi/ec.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 73c76d6460647..290d6f5be44b4 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -1331,8 +1331,6 @@ static int ec_install_handlers(struct acpi_ec *ec) static void ec_remove_handlers(struct acpi_ec *ec) { - acpi_ec_stop(ec, false); - if (test_bit(EC_FLAGS_EC_HANDLER_INSTALLED, &ec->flags)) { if (ACPI_FAILURE(acpi_remove_address_space_handler(ec->handle, ACPI_ADR_SPACE_EC, &acpi_ec_space_handler))) @@ -1340,6 +1338,19 @@ static void ec_remove_handlers(struct acpi_ec *ec) clear_bit(EC_FLAGS_EC_HANDLER_INSTALLED, &ec->flags); } + /* + * Stops handling the EC transactions after removing the operation + * region handler. This is required because _REG(DISCONNECT) + * invoked during the removal can result in new EC transactions. + * + * Flushes the EC requests and thus disables the GPE before + * removing the GPE handler. This is required by the current ACPICA + * GPE core. ACPICA GPE core will automatically disable a GPE when + * it is indicated but there is no way to handle it. So the drivers + * must disable the GPEs prior to removing the GPE handlers. + */ + acpi_ec_stop(ec, false); + if (test_bit(EC_FLAGS_GPE_HANDLER_INSTALLED, &ec->flags)) { if (ACPI_FAILURE(acpi_remove_gpe_handler(NULL, ec->gpe, &acpi_ec_gpe_handler))) |