From: Hans de Goede Date: Thu, 8 Dec 2022 14:23:34 +0000 (+0100) Subject: ACPI: EC: Fix EC address space handler unregistration X-Git-Tag: v6.6.17~5911^2^2~1 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a5072078dbfaa9d70130805766dfa34bbb7bf2a7;p=platform%2Fkernel%2Flinux-rpi.git ACPI: EC: Fix EC address space handler unregistration When an ECDT table is present the EC address space handler gets registered on the root node. So to unregister it properly the unregister call also must be done on the root node. Store the ACPI handle used for the acpi_install_address_space_handler() call and use te same handle for the acpi_remove_address_space_handler() call. Reported-by: Rafael J. Wysocki Signed-off-by: Hans de Goede Signed-off-by: Rafael J. Wysocki --- diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 9751b84..5a21e4d 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -1475,6 +1475,7 @@ static int ec_install_handlers(struct acpi_ec *ec, struct acpi_device *device) return -ENODEV; } set_bit(EC_FLAGS_EC_HANDLER_INSTALLED, &ec->flags); + ec->address_space_handler_holder = ec->handle; } if (!device) @@ -1526,7 +1527,8 @@ static int ec_install_handlers(struct acpi_ec *ec, struct acpi_device *device) static void ec_remove_handlers(struct acpi_ec *ec) { if (test_bit(EC_FLAGS_EC_HANDLER_INSTALLED, &ec->flags)) { - if (ACPI_FAILURE(acpi_remove_address_space_handler(ec->handle, + if (ACPI_FAILURE(acpi_remove_address_space_handler( + ec->address_space_handler_holder, ACPI_ADR_SPACE_EC, &acpi_ec_space_handler))) pr_err("failed to remove space handler\n"); clear_bit(EC_FLAGS_EC_HANDLER_INSTALLED, &ec->flags); diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 219c02d..ec58444 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -173,6 +173,7 @@ enum acpi_ec_event_state { struct acpi_ec { acpi_handle handle; + acpi_handle address_space_handler_holder; int gpe; int irq; unsigned long command_addr;