Messages in this thread | | | Subject | Re: [PATCH 1/2] i2c: piix4: Use request_muxed_region | From | Böszörményi Zoltán <> | Date | Tue, 13 Feb 2018 12:48:37 +0100 |
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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
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