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Add additional id check to existing driver

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Christoffer Sandberg 2020-05-29 13:19:28 +02:00
parent da7534772a
commit e74a3404a7
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GPG key ID: BF563F71B6C7A96D
1 changed files with 15 additions and 3 deletions
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18
src/clevo_keyboard.h
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@ -635,15 +635,27 @@ static DEVICE_ATTR(extra, 0444, show_hasextra_fs, NULL);
static int clevo_keyboard_probe(struct platform_device *dev) static int clevo_keyboard_probe(struct platform_device *dev)
{ {
int status; int status, ret;
if (!wmi_has_guid(CLEVO_EVENT_GUID)) { if (!wmi_has_guid(CLEVO_EVENT_GUID)) {
TUXEDO_ERROR("No known WMI event notification GUID found\n"); TUXEDO_DEBUG("probe: Clevo event guid missing\n");
return -ENODEV; return -ENODEV;
} }
if (!wmi_has_guid(CLEVO_GET_GUID)) { if (!wmi_has_guid(CLEVO_GET_GUID)) {
TUXEDO_ERROR("No known WMI control method GUID found\n"); TUXEDO_DEBUG("probe: Clevo method guid missing\n");
return -ENODEV;
}
// Since the WMI GUIDs aren't unique let's (at least)
// check the return of some "known existing general" method
status = evaluate_wmi_method_clevo(0x52, 0, &ret);
if (status < 0) {
TUXEDO_DEBUG("probe: Clevo GUIDs present but method call failed\n");
return -ENODEV;
}
if (ret == 0xffffffff) {
TUXEDO_DEBUG("probe: Clevo GUIDs present but method returned unexpected value\n");
return -ENODEV; return -ENODEV;
} }