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| author | Dawei Li <set_pte_at@outlook.com> | 2022-11-13 19:26:09 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-11-23 21:11:22 +0300 |
| commit | 6c0eb5ba3500f6da367351ff3c4452c029cb72fa (patch) | |
| tree | 86103c591d5e81a20ffb8d651d8676f81390f21f /drivers/char | |
| parent | d7d4332155efe82a3d70ab179dde30cad3b094a4 (diff) | |
| download | linux-6c0eb5ba3500f6da367351ff3c4452c029cb72fa.tar.xz | |
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/char')
| -rw-r--r-- | drivers/char/sonypi.c | 3 | ||||
| -rw-r--r-- | drivers/char/tpm/tpm_crb.c | 4 |
2 files changed, 2 insertions, 5 deletions
diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c index 27e301a6bb7a..9211531689b2 100644 --- a/drivers/char/sonypi.c +++ b/drivers/char/sonypi.c @@ -1123,10 +1123,9 @@ static int sonypi_acpi_add(struct acpi_device *device) return 0; } -static int sonypi_acpi_remove(struct acpi_device *device) +static void sonypi_acpi_remove(struct acpi_device *device) { sonypi_acpi_device = NULL; - return 0; } static const struct acpi_device_id sonypi_device_ids[] = { diff --git a/drivers/char/tpm/tpm_crb.c b/drivers/char/tpm/tpm_crb.c index 18606651d1aa..17d92f466db5 100644 --- a/drivers/char/tpm/tpm_crb.c +++ b/drivers/char/tpm/tpm_crb.c @@ -713,14 +713,12 @@ static int crb_acpi_add(struct acpi_device *device) return tpm_chip_register(chip); } -static int crb_acpi_remove(struct acpi_device *device) +static void crb_acpi_remove(struct acpi_device *device) { struct device *dev = &device->dev; struct tpm_chip *chip = dev_get_drvdata(dev); tpm_chip_unregister(chip); - - return 0; } static const struct dev_pm_ops crb_pm = { |