tree a5d5cae394b95b1ac1782fa61d43df24f073764e
parent 5b40f709a1b3100a1a9dbd824303c68757f2e25e
author Robert Jarzmik <robert.jarzmik@free.fr> 1443293358 +0200
committer David S. Miller <davem@davemloft.net> 1443504768 -0700

net: irda: pxaficp_ir: use sched_clock() for time management

Instead of using directly the OS timer through direct register access,
use the standard sched_clock(), which will end up in OSCR reading
anyway.

This is a first step for direct access register removal and machine
specific code removal from this driver.

This commit changes the behavior, as previously the minimum turnaround
time was counted in 76ns steps, while with this patch it is counted in
microsecond steps. The strictly equal formula would have been :
	    while ((sched_clock() - si->last_clk) * 76 < mtt)

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>