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| author | Dave Airlie <airlied@redhat.com> | 2016-07-26 17:26:29 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2016-07-26 17:26:29 +1000 |
| commit | 5e580523d9128a4d8364fe89d36c38fc7819c8dd (patch) | |
| tree | 852fb2427d980830ae8686a91e4ca5873f259ab9 /drivers/acpi/ec.c | |
| parent | c11dea5b0290984fa48111957ba3fdc5b3bdae5a (diff) | |
| parent | 523d939ef98fd712632d93a5a2b588e477a7565e (diff) | |
| download | linux-5e580523d9128a4d8364fe89d36c38fc7819c8dd.tar.gz linux-5e580523d9128a4d8364fe89d36c38fc7819c8dd.tar.bz2 linux-5e580523d9128a4d8364fe89d36c38fc7819c8dd.zip | |
Backmerge tag 'v4.7' into drm-next
Linux 4.7
As requested by Daniel Vetter as the conflicts were getting messy.
Diffstat (limited to 'drivers/acpi/ec.c')
| -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 73c76d646064..290d6f5be44b 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))) |