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Subject[PATCH v1 3/3] HID: intel-ish-hid: Make remove callback return void
Date
The driver core ignores the return value of struct bus_type::remove()
because there is only little that can be done. To simplify the quest to
make this function return void, let struct ishtp_cl_driver::remove() return
void, too. All users already unconditionally return 0, this commit makes
it obvious that returning an error value is a bad idea.

Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
---
drivers/hid/intel-ish-hid/ishtp-fw-loader.c | 4 +---
drivers/hid/intel-ish-hid/ishtp-hid-client.c | 4 +---
drivers/hid/intel-ish-hid/ishtp/bus.c | 5 ++---
drivers/platform/chrome/cros_ec_ishtp.c | 4 +---
include/linux/intel-ish-client-if.h | 2 +-
5 files changed, 6 insertions(+), 13 deletions(-)

diff --git a/drivers/hid/intel-ish-hid/ishtp-fw-loader.c b/drivers/hid/intel-ish-hid/ishtp-fw-loader.c
index 6cf59fd26ad7..edb0bd084c27 100644
--- a/drivers/hid/intel-ish-hid/ishtp-fw-loader.c
+++ b/drivers/hid/intel-ish-hid/ishtp-fw-loader.c
@@ -1015,7 +1015,7 @@ static int loader_ishtp_cl_probe(struct ishtp_cl_device *cl_device)
*
* Return: 0
*/
-static int loader_ishtp_cl_remove(struct ishtp_cl_device *cl_device)
+static void loader_ishtp_cl_remove(struct ishtp_cl_device *cl_device)
{
struct ishtp_cl_data *client_data;
struct ishtp_cl *loader_ishtp_cl = ishtp_get_drvdata(cl_device);
@@ -1032,8 +1032,6 @@ static int loader_ishtp_cl_remove(struct ishtp_cl_device *cl_device)
cancel_work_sync(&client_data->work_ishtp_reset);
loader_deinit(loader_ishtp_cl);
ishtp_put_device(cl_device);
-
- return 0;
}

/**
diff --git a/drivers/hid/intel-ish-hid/ishtp-hid-client.c b/drivers/hid/intel-ish-hid/ishtp-hid-client.c
index 6ba944b40fdb..0f1b5283bab4 100644
--- a/drivers/hid/intel-ish-hid/ishtp-hid-client.c
+++ b/drivers/hid/intel-ish-hid/ishtp-hid-client.c
@@ -838,7 +838,7 @@ static int hid_ishtp_cl_probe(struct ishtp_cl_device *cl_device)
*
* Return: 0
*/
-static int hid_ishtp_cl_remove(struct ishtp_cl_device *cl_device)
+static void hid_ishtp_cl_remove(struct ishtp_cl_device *cl_device)
{
struct ishtp_cl *hid_ishtp_cl = ishtp_get_drvdata(cl_device);
struct ishtp_cl_data *client_data = ishtp_get_client_data(hid_ishtp_cl);
@@ -856,8 +856,6 @@ static int hid_ishtp_cl_remove(struct ishtp_cl_device *cl_device)
hid_ishtp_cl = NULL;

client_data->num_hid_devices = 0;
-
- return 0;
}

/**
diff --git a/drivers/hid/intel-ish-hid/ishtp/bus.c b/drivers/hid/intel-ish-hid/ishtp/bus.c
index 7f36ce6187a1..ffc9ce5c86ee 100644
--- a/drivers/hid/intel-ish-hid/ishtp/bus.c
+++ b/drivers/hid/intel-ish-hid/ishtp/bus.c
@@ -258,7 +258,6 @@ static int ishtp_cl_device_remove(struct device *dev)
{
struct ishtp_cl_device *device = to_ishtp_cl_device(dev);
struct ishtp_cl_driver *driver = to_ishtp_cl_driver(dev->driver);
- int ret = 0;

if (device->event_cb) {
device->event_cb = NULL;
@@ -266,9 +265,9 @@ static int ishtp_cl_device_remove(struct device *dev)
}

if (driver->remove)
- ret = driver->remove(device);
+ driver->remove(device);

- return ret;
+ return 0;
}

/**
diff --git a/drivers/platform/chrome/cros_ec_ishtp.c b/drivers/platform/chrome/cros_ec_ishtp.c
index 81364029af36..bd80173b33a2 100644
--- a/drivers/platform/chrome/cros_ec_ishtp.c
+++ b/drivers/platform/chrome/cros_ec_ishtp.c
@@ -707,7 +707,7 @@ static int cros_ec_ishtp_probe(struct ishtp_cl_device *cl_device)
*
* Return: 0
*/
-static int cros_ec_ishtp_remove(struct ishtp_cl_device *cl_device)
+static void cros_ec_ishtp_remove(struct ishtp_cl_device *cl_device)
{
struct ishtp_cl *cros_ish_cl = ishtp_get_drvdata(cl_device);
struct ishtp_cl_data *client_data = ishtp_get_client_data(cros_ish_cl);
@@ -716,8 +716,6 @@ static int cros_ec_ishtp_remove(struct ishtp_cl_device *cl_device)
cancel_work_sync(&client_data->work_ec_evt);
cros_ish_deinit(cros_ish_cl);
ishtp_put_device(cl_device);
-
- return 0;
}

/**
diff --git a/include/linux/intel-ish-client-if.h b/include/linux/intel-ish-client-if.h
index 0d6b4bc191c5..94669e21dc8b 100644
--- a/include/linux/intel-ish-client-if.h
+++ b/include/linux/intel-ish-client-if.h
@@ -36,7 +36,7 @@ struct ishtp_cl_driver {
const char *name;
const guid_t *guid;
int (*probe)(struct ishtp_cl_device *dev);
- int (*remove)(struct ishtp_cl_device *dev);
+ void (*remove)(struct ishtp_cl_device *dev);
int (*reset)(struct ishtp_cl_device *dev);
const struct dev_pm_ops *pm;
};
--
2.29.2
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