rust: iopoll: add read_poll_timeout function #701
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This patch adds
read_poll_timeout()
macro rewritten in Rust.It is intended for indirect use by wrapping any specialization of
this macro in a concrete function definition such as
readx_poll_timeout()
for a given
read()
function. This provides additional type-safety for the interfaceas well as encapsulates the
read_poll_timeout!()
macro.This patch is a dependency of a Samsung Exynos trng driver provided initially in #554.
Signed-off-by: Maciej Falkowski m.falkowski@samsung.com