backwards busy wait using "time_before()"??
From: Robert P. J. Day
Date: Thu Dec 31 2009 - 11:41:57 EST
if this is an idiotic question, i'll blame it on the fact that
there's only decaf left in the house.
from drivers/spi/spi_stmp.c:
#define busy_wait(cond) \
({ \
unsigned long end_jiffies = jiffies + STMP_SPI_TIMEOUT; \
bool succeeded = false; \
do { \
if (cond) { \
succeeded = true; \
break; \
} \
cpu_relax(); \
} while (time_before(end_jiffies, jiffies)); \
succeeded; \
})
is it just me, or do those arguments to time_before() look
backwards?
rday
--
========================================================================
Robert P. J. Day Waterloo, Ontario, CANADA
Linux Consulting, Training and Kernel Pedantry.
Web page: http://crashcourse.ca
Twitter: http://twitter.com/rpjday
========================================================================
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