linux/drivers/i2c
David Woodhouse 3e3183bab0 [PATCH] SCX200_ACB: eliminate spurious timeout errors
While busy-waiting for completion, check the hardware after scheduling;
don't schedule and then immediately check the _timeout_.  If the yield()
took a long time (as it does on my OLPC prototype board when it's busy),
we'd report a timeout even though the hardware was now ready.

This fixes it, and also switches the yield() for a cond_resched() because
we don't actually want to be _that_ nice about it.  I see nice
tightly-packed SMBus transactions now, rather than waiting for milliseconds
between successive phases.

Actually, we shouldn't be busy-waiting here at all.  We should be using
interrupts.  That's an exercise for another day though.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Cc: Christer Weinigel <wingel@nano-system.com>
Cc: <Jordan.Crouse@amd.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-06 08:57:49 -07:00
..
algos [PATCH] i2c-algo-bit: Wipe out dead code 2006-07-12 15:43:07 -07:00
busses [PATCH] SCX200_ACB: eliminate spurious timeout errors 2006-08-06 08:57:49 -07:00
chips [PATCH] pca9539: Honor the force parameter 2006-07-12 15:43:07 -07:00
Kconfig Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile [PATCH] hwmon: hwmon vs i2c, second round (07/11) 2005-09-05 09:14:22 -07:00
i2c-core.c [PATCH] i2c: Fix 'ignore' module parameter handling in i2c-core 2006-07-12 15:43:06 -07:00
i2c-dev.c [PATCH] I2C: I2C controllers go into right place on sysfs 2006-06-22 11:10:36 -07:00