From d030061f610e038bca66c4902ad0605bc1c85b89 Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Wed, 6 Mar 2024 18:50:48 +0100 Subject: HID: google: hammer: Convert to platform remove callback returning void MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König Signed-off-by: Jiri Kosina --- drivers/hid/hid-google-hammer.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/hid') diff --git a/drivers/hid/hid-google-hammer.c b/drivers/hid/hid-google-hammer.c index c6bdb9c4ef3e..25331695ae32 100644 --- a/drivers/hid/hid-google-hammer.c +++ b/drivers/hid/hid-google-hammer.c @@ -255,7 +255,7 @@ out: return retval; } -static int cbas_ec_remove(struct platform_device *pdev) +static void cbas_ec_remove(struct platform_device *pdev) { struct cros_ec_device *ec = dev_get_drvdata(pdev->dev.parent); @@ -266,7 +266,6 @@ static int cbas_ec_remove(struct platform_device *pdev) cbas_ec_set_input(NULL); mutex_unlock(&cbas_ec_reglock); - return 0; } static const struct acpi_device_id cbas_ec_acpi_ids[] = { @@ -285,7 +284,7 @@ MODULE_DEVICE_TABLE(of, cbas_ec_of_match); static struct platform_driver cbas_ec_driver = { .probe = cbas_ec_probe, - .remove = cbas_ec_remove, + .remove_new = cbas_ec_remove, .driver = { .name = "cbas_ec", .acpi_match_table = ACPI_PTR(cbas_ec_acpi_ids), -- cgit v1.2.3 From afbc301cc04f986cc54e678981bee1ca41707cf6 Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Wed, 6 Mar 2024 18:50:49 +0100 Subject: HID: hid-sensor-custom: Convert to platform remove callback returning void MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König Acked-by: Srinivas Pandruvada Reviewed-by: Jonathan Cameron Signed-off-by: Jiri Kosina --- drivers/hid/hid-sensor-custom.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'drivers/hid') diff --git a/drivers/hid/hid-sensor-custom.c b/drivers/hid/hid-sensor-custom.c index d85398721659..de7287f3af61 100644 --- a/drivers/hid/hid-sensor-custom.c +++ b/drivers/hid/hid-sensor-custom.c @@ -1032,14 +1032,14 @@ err_remove_callback: return ret; } -static int hid_sensor_custom_remove(struct platform_device *pdev) +static void hid_sensor_custom_remove(struct platform_device *pdev) { struct hid_sensor_custom *sensor_inst = platform_get_drvdata(pdev); struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data; if (sensor_inst->custom_pdev) { platform_device_unregister(sensor_inst->custom_pdev); - return 0; + return; } hid_sensor_custom_dev_if_remove(sensor_inst); @@ -1047,8 +1047,6 @@ static int hid_sensor_custom_remove(struct platform_device *pdev) sysfs_remove_group(&sensor_inst->pdev->dev.kobj, &enable_sensor_attr_group); sensor_hub_remove_callback(hsdev, hsdev->usage); - - return 0; } static const struct platform_device_id hid_sensor_custom_ids[] = { @@ -1068,7 +1066,7 @@ static struct platform_driver hid_sensor_custom_platform_driver = { .name = KBUILD_MODNAME, }, .probe = hid_sensor_custom_probe, - .remove = hid_sensor_custom_remove, + .remove_new = hid_sensor_custom_remove, }; module_platform_driver(hid_sensor_custom_platform_driver); -- cgit v1.2.3 From 009faf979ea34f2e186e0e57c33a88ccd916e661 Mon Sep 17 00:00:00 2001 From: Uwe Kleine-König Date: Wed, 6 Mar 2024 18:50:50 +0100 Subject: HID: surface-hid: kbd: Convert to platform remove callback returning void MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König Reviewed-by: Maximilian Luz Signed-off-by: Jiri Kosina --- drivers/hid/surface-hid/surface_kbd.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/hid') diff --git a/drivers/hid/surface-hid/surface_kbd.c b/drivers/hid/surface-hid/surface_kbd.c index 4fbce201db6a..8c0cbb2deb11 100644 --- a/drivers/hid/surface-hid/surface_kbd.c +++ b/drivers/hid/surface-hid/surface_kbd.c @@ -271,10 +271,9 @@ static int surface_kbd_probe(struct platform_device *pdev) return surface_hid_device_add(shid); } -static int surface_kbd_remove(struct platform_device *pdev) +static void surface_kbd_remove(struct platform_device *pdev) { surface_hid_device_destroy(platform_get_drvdata(pdev)); - return 0; } static const struct acpi_device_id surface_kbd_match[] = { @@ -285,7 +284,7 @@ MODULE_DEVICE_TABLE(acpi, surface_kbd_match); static struct platform_driver surface_kbd_driver = { .probe = surface_kbd_probe, - .remove = surface_kbd_remove, + .remove_new = surface_kbd_remove, .driver = { .name = "surface_keyboard", .acpi_match_table = surface_kbd_match, -- cgit v1.2.3