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Atsushi Nemoto <anemo@mba.ocn.ne.jp> wrote: > A spi transfer with zero length is not invalid. For example, such > transfer (len == 0 && delay_usecs != 0) can be used to achieve delay > before first CLK edge after chipselect assertion. > > Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> > --- > Though some discussion about zero length transfer were raised by this > patch last time, I think there were no explicit objection to this > patch itself. Well, the patch doesn't seem to do any harm, but I can't see much of a point to it either if zero-length transfers aren't going to be allowed... Also, if the length is zero, the driver will end up doing a memset with length zero at some point. Is that allowed? Haavard -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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