> -----Original Message----- > From: Darren Hart [mailto:dvhart@xxxxxxxxxxxxx] > Sent: Wednesday, October 18, 2017 2:09 PM > To: Pali Rohár <pali.rohar@xxxxxxxxx> > Cc: Limonciello, Mario <Mario_Limonciello@xxxxxxxx>; Andy Shevchenko > <andy.shevchenko@xxxxxxxxx>; LKML <linux-kernel@xxxxxxxxxxxxxxx>; platform- > driver-x86@xxxxxxxxxxxxxxx; Andy Lutomirski <luto@xxxxxxxxxx>; > quasisec@xxxxxxxxxx; rjw@xxxxxxxxxxxxx; mjg59@xxxxxxxxxx; hch@xxxxxx; Greg > KH <greg@xxxxxxxxx>; Alan Cox <gnomes@xxxxxxxxxxxxxxxxxxx> > Subject: Re: [PATCH v9 11/17] platform/x86: dell-smbios-smm: test for WSMT > > On Tue, Oct 17, 2017 at 09:22:58PM +0200, Pali Rohár wrote: > > On Tuesday 17 October 2017 13:21:55 Mario Limonciello wrote: > > > +/* When enabled this indicates that SMM won't work */ > > > +static int test_wsmt_enabled(void) > > > +{ > > > + struct calling_interface_token *token; > > > + > > > + /* if token doesn't exist, SMM will work */ > > > + token = dell_smbios_find_token(WSMT_EN_TOKEN); > > > + if (!token) > > > + return 0; > > > + > > > + /* if token exists, try to access over SMM */ > > > + buffer->class = CLASS_TOKEN_READ; > > > + buffer->select = SELECT_TOKEN_STD; > > > + memset(buffer, 0, sizeof(struct calling_interface_buffer)); > > > + buffer->input[0] = token->location; > > > + dell_smbios_smm_call(buffer); > > > + > > > + /* if lookup failed, we know WSMT was enabled */ > > > + if (buffer->output[0] != 0) > > > + return 1; > > > + > > > + /* query token status if it didn't fail */ > > > + return (buffer->output[1] == token->value); > > > +} > > > > Maybe small suggestion... function returns only zero or one -- what is a > > good candidate to have return value boolean and not basic int. > > Yes please. > OK I'll adjust this (and the other things Pali sent recently) in the next submission. Just waiting on feedback for some of the other areas before sending off again.
