Am 20.11.2015 um 20:18 schrieb Mark Brown: > On Fri, Nov 20, 2015 at 07:59:37PM +0100, Heiner Kallweit wrote: > >> OK, I interpret this as: >> Controller drivers shall return 0 only if the complete message was >> transferred successfully. > > Yes. > >> If a controller driver returns an error it has the option to set >> actual_length to what was transferred successfully. > > It should always do this. > >> This means we can't use patch 4 from Michal because it bails out as soon >> as the underlying SPI transfer returns an error. > > I haven't seen that patch. > Sorry, this was addressed to Brian. It's about a mtd spi-nor patch. http://lists.infradead.org/pipermail/linux-mtd/2015-August/061062.html Most likely neither you nor linux-spi was on cc. (Oh, it was patch 7 of the series, not 4.)
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