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HID: logitech-hidpp: prefix the name with "Logitech" 

Current names are reported as "K750", "M705", and it can be misleading
for the users when they look at their input device list.

Prefixing the names with "Logitech " makes things better.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Benjamin Tissoires 2014-12-11 17:39:59 -05:00 committed by Jiri Kosina
parent 8abd820503
commit a0e625f8b7
1 changed files with 34 additions and 0 deletions
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34
drivers/hid/hid-logitech-hidpp.c
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@ -282,6 +282,33 @@ static inline bool hidpp_report_is_connect_event(struct hidpp_report *report)
(report->rap.sub_id == 0x41);
}
/**
* hidpp_prefix_name() prefixes the current given name with "Logitech ".
*/
static void hidpp_prefix_name(char **name, int name_length)
{
#define PREFIX_LENGTH 9 /* "Logitech " */
int new_length;
char *new_name;
if (name_length > PREFIX_LENGTH &&
strncmp(*name, "Logitech ", PREFIX_LENGTH) == 0)
/* The prefix has is already in the name */
return;
new_length = PREFIX_LENGTH + name_length;
new_name = kzalloc(new_length, GFP_KERNEL);
if (!new_name)
return;
snprintf(new_name, new_length, "Logitech %s", *name);
kfree(*name);
*name = new_name;
}
/* -------------------------------------------------------------------------- */
/* HIDP++ 1.0 commands */
/* -------------------------------------------------------------------------- */
@ -321,6 +348,10 @@ static char *hidpp_get_unifying_name(struct hidpp_device *hidpp_dev)
return NULL;
memcpy(name, &response.rap.params[2], len);
/* include the terminating '\0' */
hidpp_prefix_name(&name, len + 1);
return name;
}
@ -498,6 +529,9 @@ static char *hidpp_get_device_name(struct hidpp_device *hidpp)
index += ret;
}
/* include the terminating '\0' */
hidpp_prefix_name(&name, __name_length + 1);
return name;
}