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author | Dawei Li <set_pte_at@outlook.com> | 2022-11-14 00:26:09 +0800 |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-11-23 19:11:22 +0100 |
commit | 6c0eb5ba3500f6da367351ff3c4452c029cb72fa (patch) | |
tree | 86103c591d5e81a20ffb8d651d8676f81390f21f /drivers/acpi/sbshc.c | |
parent | d7d4332155efe82a3d70ab179dde30cad3b094a4 (diff) | |
download | linux-6c0eb5ba3500f6da367351ff3c4452c029cb72fa.tar.gz linux-6c0eb5ba3500f6da367351ff3c4452c029cb72fa.tar.bz2 linux-6c0eb5ba3500f6da367351ff3c4452c029cb72fa.zip |
ACPI: make remove callback of ACPI driver void
For bus-based driver, device removal is implemented as:
1 device_remove()->
2 bus->remove()->
3 driver->remove()
Driver core needs no inform from callee(bus driver) about the
result of remove callback. In that case, commit fc7a6209d571
("bus: Make remove callback return void") forces bus_type::remove
be void-returned.
Now we have the situation that both 1 & 2 of calling chain are
void-returned, so it does not make much sense for 3(driver->remove)
to return non-void to its caller.
So the basic idea behind this change is making remove() callback of
any bus-based driver to be void-returned.
This change, for itself, is for device drivers based on acpi-bus.
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Lee Jones <lee@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dawei Li <set_pte_at@outlook.com>
Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> # for drivers/platform/surface/*
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/sbshc.c')
-rw-r--r-- | drivers/acpi/sbshc.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/acpi/sbshc.c b/drivers/acpi/sbshc.c index 340e0b61587e..16f2daaa2c45 100644 --- a/drivers/acpi/sbshc.c +++ b/drivers/acpi/sbshc.c @@ -30,7 +30,7 @@ struct acpi_smb_hc { }; static int acpi_smbus_hc_add(struct acpi_device *device); -static int acpi_smbus_hc_remove(struct acpi_device *device); +static void acpi_smbus_hc_remove(struct acpi_device *device); static const struct acpi_device_id sbs_device_ids[] = { {"ACPI0001", 0}, @@ -280,19 +280,18 @@ static int acpi_smbus_hc_add(struct acpi_device *device) extern void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit); -static int acpi_smbus_hc_remove(struct acpi_device *device) +static void acpi_smbus_hc_remove(struct acpi_device *device) { struct acpi_smb_hc *hc; if (!device) - return -EINVAL; + return; hc = acpi_driver_data(device); acpi_ec_remove_query_handler(hc->ec, hc->query_bit); acpi_os_wait_events_complete(); kfree(hc); device->driver_data = NULL; - return 0; } module_acpi_driver(acpi_smb_hc_driver); |