[PATCH] spi: bcm2835aux: Avoid 64-bit arithmetic in xfer len calc
broonie at kernel.org
Wed Feb 14 08:04:24 PST 2018
On Mon, Feb 12, 2018 at 11:38:14AM -0800, Trent Piepho wrote:
> We want to check for xfers that are over 30 microseconds. Rather than
> find how many µs a xfer will take, instead find how many bytes can be
> transferred in 30 µs. The latter must be less than 32 bits (since our
> clock speed is limited to 32 bits), while the former involves 64 bit
> quantities and more arithmetic operations.
Please don't bury patches in the middle of existing threads, it makes it
much harder to find them.
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 488 bytes
Desc: not available
More information about the linux-arm-kernel