Re: [PATCH 1/2] i2c: piix4: Use request_muxed_region

[BÃszÃrmÃnyi ZoltÃn]

2018-02-12 19:51 keltezéssel, Guenter Roeck írta:
> On Mon, Feb 12, 2018 at 11:10:41AM +0100, Jean Delvare wrote:
> > Hi Guneter,
> >
> > Sorry for the delay :(
> >
> > On Sat, 30 Dec 2017 08:50:57 -0800, Guenter Roeck wrote:
> > > Accesses to SB800_PIIX4_SMB_IDX can occur from multiple drivers.
> > > Use request_muxed_region() to ensure synchronization.
> >
> > Which ones? Documenting it, at least in the commit message, would seem
> > useful. Out of curiosity, have these other drivers been converted to
> > use request_muxed_region already?
> Primarily watchdog, but there is also unprotected initialization code
> in several locations.

There are three locations touching the same I/O ports:
the PCI-USB quirks code (still doesn't use locking AFAIK), i2c-piix4 and
the sp5100_tco watchdog drivers.

Best regards,
Zoltán Böszörményi