On Friday 16 June 2017 18:33:54 Mario.Limonciello@xxxxxxxx wrote: > > -----Original Message----- > > From: Limonciello, Mario > > Sent: Thursday, June 15, 2017 10:16 AM > > To: 'Pali Rohár' <pali.rohar@xxxxxxxxx>; Darren Hart > > <dvhart@xxxxxxxxxxxxx> Cc: Andy Shevchenko <andy@xxxxxxxxxxxxx>; > > Andy Lutomirski <luto@xxxxxxxxxx>; > > platform-driver-x86@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx > > Subject: RE: [PATCH] RFC: platform/x86: wmi: Fix check for method > > instance number > > > > > -----Original Message----- > > > From: Pali Rohár [mailto:pali.rohar@xxxxxxxxx] > > > Sent: Thursday, June 15, 2017 8:59 AM > > > To: Limonciello, Mario <Mario_Limonciello@xxxxxxxx>; Darren Hart > > > <dvhart@xxxxxxxxxxxxx> > > > Cc: Andy Shevchenko <andy@xxxxxxxxxxxxx>; Andy Lutomirski > > > > <luto@xxxxxxxxxx>; > > > > > platform-driver-x86@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx > > > Subject: Re: [PATCH] RFC: platform/x86: wmi: Fix check for method > > > instance number > > > > > > Mario, are you able to check if instance number passed to > > > wmi_evaluate_method in following dell WMI drivers is correct and > > > should be really 1? > > > > > > I suspect that it should be zero, as instance number is indexed > > > from zero. > > > > > > There is no comment in those dell WMI drivers why it is 1, nor > > > what 1 means. > > > > > > Ideally it needs to be checked in ACPI byte code, MOF file and > > > WDG dump. > > > > I think you're likely correct. I don't have a box that supports > > alienware-wmi or dell-wmi-led.c handy at the current moment to > > confirm this hypothesis though. I'll confirm this later. > > > > I didn't realize it was zero indexed when I wrote alienware-wmi, > > and I'm guessing the author of dell-wmi-led didn't either. > > > > The reason it's probably working is the ACPI byte code isn't > > actually checking the instance since most times _WDG will only > > call out one instance. > > I confirmed you're correct. Switching instance over to 0 works > properly on an ASM200 (supported by alienware-wmi). Can you check what is the value in the instance_count in _WDG? -- Pali Rohár pali.rohar@xxxxxxxxx
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