On Mon, Oct 31, 2016 at 04:39:02PM -0500, Bjorn Helgaas wrote: > Hardware that supports only 32-bit config writes is not spec-compliant. > For example, if software performs a 16-bit write, we must do a 32-bit read, > merge in the 16 bits we intend to write, followed by a 32-bit write. If > the 16 bits we *don't* intend to write happen to have any RW1C (write-one- > to-clear) bits set, we just inadvertently cleared something we shouldn't > have. > > Add a rate-limited warning when we do sub-32 bit config writes. Remove > similar probe-time warnings from some of the affected host bridge drivers. Yay, I've been on about this for ages... Enthusiastically-Acked-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxx> -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net. -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
