diff options
Diffstat (limited to 'drivers/tty/serdev')
| -rw-r--r-- | drivers/tty/serdev/core.c | 34 | ||||
| -rw-r--r-- | drivers/tty/serdev/serdev-ttyport.c | 6 |
2 files changed, 30 insertions, 10 deletions
diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c index 226adeec2aed..c5f0d936b003 100644 --- a/drivers/tty/serdev/core.c +++ b/drivers/tty/serdev/core.c @@ -18,6 +18,7 @@ #include <linux/sched.h> #include <linux/serdev.h> #include <linux/slab.h> +#include <linux/platform_data/x86/apple.h> static bool is_registered; static DEFINE_IDA(ctrl_ida); @@ -115,8 +116,8 @@ int serdev_device_add(struct serdev_device *serdev) err = device_add(&serdev->dev); if (err < 0) { - dev_err(&serdev->dev, "Can't add %s, status %d\n", - dev_name(&serdev->dev), err); + dev_err(&serdev->dev, "Can't add %s, status %pe\n", + dev_name(&serdev->dev), ERR_PTR(err)); goto err_clear_serdev; } @@ -540,7 +541,8 @@ static int of_serdev_register_devices(struct serdev_controller *ctrl) err = serdev_device_add(serdev); if (err) { dev_err(&serdev->dev, - "failure adding device. status %d\n", err); + "failure adding device. status %pe\n", + ERR_PTR(err)); serdev_device_put(serdev); } else found = true; @@ -630,6 +632,15 @@ static int acpi_serdev_check_resources(struct serdev_controller *ctrl, if (ret) return ret; + /* + * Apple machines provide an empty resource template, so on those + * machines just look for immediate children with a "baud" property + * (from the _DSM method) instead. + */ + if (!lookup.controller_handle && x86_apple_machine && + !acpi_dev_get_property(adev, "baud", ACPI_TYPE_BUFFER, NULL)) + acpi_get_parent(adev->handle, &lookup.controller_handle); + /* Make sure controller and ResourceSource handle match */ if (ACPI_HANDLE(ctrl->dev.parent) != lookup.controller_handle) return -ENODEV; @@ -656,13 +667,20 @@ static acpi_status acpi_serdev_register_device(struct serdev_controller *ctrl, err = serdev_device_add(serdev); if (err) { dev_err(&serdev->dev, - "failure adding ACPI serdev device. status %d\n", err); + "failure adding ACPI serdev device. status %pe\n", + ERR_PTR(err)); serdev_device_put(serdev); } return AE_OK; } +static const struct acpi_device_id serdev_acpi_devices_blacklist[] = { + { "INT3511", 0 }, + { "INT3512", 0 }, + { }, +}; + static acpi_status acpi_serdev_add_device(acpi_handle handle, u32 level, void *data, void **return_value) { @@ -675,6 +693,10 @@ static acpi_status acpi_serdev_add_device(acpi_handle handle, u32 level, if (acpi_device_enumerated(adev)) return AE_OK; + /* Skip if black listed */ + if (!acpi_match_device_ids(adev, serdev_acpi_devices_blacklist)) + return AE_OK; + if (acpi_serdev_check_resources(ctrl, adev)) return AE_OK; @@ -731,8 +753,8 @@ int serdev_controller_add(struct serdev_controller *ctrl) ret_of = of_serdev_register_devices(ctrl); ret_acpi = acpi_serdev_register_devices(ctrl); if (ret_of && ret_acpi) { - dev_dbg(&ctrl->dev, "no devices registered: of:%d acpi:%d\n", - ret_of, ret_acpi); + dev_dbg(&ctrl->dev, "no devices registered: of:%pe acpi:%pe\n", + ERR_PTR(ret_of), ERR_PTR(ret_acpi)); ret = -ENODEV; goto err_rpm_disable; } diff --git a/drivers/tty/serdev/serdev-ttyport.c b/drivers/tty/serdev/serdev-ttyport.c index d1cdd2ab8b4c..d367803e2044 100644 --- a/drivers/tty/serdev/serdev-ttyport.c +++ b/drivers/tty/serdev/serdev-ttyport.c @@ -265,7 +265,6 @@ struct device *serdev_tty_port_register(struct tty_port *port, struct device *parent, struct tty_driver *drv, int idx) { - const struct tty_port_client_operations *old_ops; struct serdev_controller *ctrl; struct serport *serport; int ret; @@ -284,7 +283,6 @@ struct device *serdev_tty_port_register(struct tty_port *port, ctrl->ops = &ctrl_ops; - old_ops = port->client_ops; port->client_ops = &client_ops; port->client_data = ctrl; @@ -297,7 +295,7 @@ struct device *serdev_tty_port_register(struct tty_port *port, err_reset_data: port->client_data = NULL; - port->client_ops = old_ops; + port->client_ops = &tty_port_default_client_ops; serdev_controller_put(ctrl); return ERR_PTR(ret); @@ -312,8 +310,8 @@ int serdev_tty_port_unregister(struct tty_port *port) return -ENODEV; serdev_controller_remove(ctrl); - port->client_ops = NULL; port->client_data = NULL; + port->client_ops = &tty_port_default_client_ops; serdev_controller_put(ctrl); return 0; |