[PATCH 1/2] HID: logitech-hidpp: do not return the name length

Benjamin Tissoires
2014-12-10T22:21:23Z

We do not make any use of the actual name length get through
hidpp_get_device_name().

We can drop the extra code and simplify the API a bit.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
---
drivers/hid/hid-logitech-hidpp.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
index 1a6395d..3846305 100644
--- a/drivers/hid/hid-logitech-hidpp.c
+++ b/drivers/hid/hid-logitech-hidpp.c
@@ -461,7 +461,7 @@ static int hidpp_devicenametype_get_device_name(struct hidpp_device *hidpp,
return count;
}

-static char *hidpp_get_device_name(struct hidpp_device *hidpp, u8 *name_length)
+static char *hidpp_get_device_name(struct hidpp_device *hidpp)
{
u8 feature_type;
u8 feature_index;
@@ -484,7 +484,6 @@ static char *hidpp_get_device_name(struct hidpp_device *hidpp, u8 *name_length)
if (!name)
goto out_err;

- *name_length = __name_length + 1;
while (index < __name_length)
index += hidpp_devicenametype_get_device_name(hidpp,
feature_index, index, name + index,
@@ -493,7 +492,6 @@ static char *hidpp_get_device_name(struct hidpp_device *hidpp, u8 *name_length)
return name;

out_err:
- *name_length = 0;
return NULL;
}

@@ -989,7 +987,6 @@ static void hidpp_overwrite_name(struct hid_device *hdev, bool use_unifying)
{
struct hidpp_device *hidpp = hid_get_drvdata(hdev);
char *name;
- u8 name_length;

if (use_unifying)
/*
@@ -999,7 +996,7 @@ static void hidpp_overwrite_name(struct hid_device *hdev, bool use_unifying)
*/
name = hidpp_get_unifying_name(hidpp);
else
- name = hidpp_get_device_name(hidpp, &name_length);
+ name = hidpp_get_device_name(hidpp);

if (!name)
hid_err(hdev, "unable to retrieve the name of the device");
@@ -1053,7 +1050,6 @@ static void hidpp_connect_event(struct hidpp_device *hidpp)
bool connected = atomic_read(&hidpp->connected);
struct input_dev *input;
char *name, *devm_name;
- u8 name_length;

if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)
wtp_connect(hdev, connected);
@@ -1080,7 +1076,7 @@ static void hidpp_connect_event(struct hidpp_device *hidpp)
return;
}

- name = hidpp_get_device_name(hidpp, &name_length);
+ name = hidpp_get_device_name(hidpp);
if (!name) {
hid_err(hdev, "unable to retrieve the name of the device");
} else {
--
2.1.0