linux/drivers/w1
Jean-François Dagenais f607e7fc5f w1: ds1wm: add a reset recovery parameter
This fixes a regression in 3.0 reported by Paul Parsons regarding the
removal of the msleep(1) in the ds1wm_reset() function:

: The linux-3.0-rc4 DS1WM 1-wire driver is logging "bus error, retrying"
: error messages on an HP iPAQ hx4700 PDA (XScale-PXA270):
:
: <snip>
: Driver for 1-wire Dallas network protocol.
: DS1WM w1 busmaster driver - (c) 2004 Szabolcs Gyurko
: 1-Wire driver for the DS2760 battery monitor  chip  - (c) 2004-2005, Szabolcs Gyurko
: ds1wm ds1wm: pass: 1 bus error, retrying
: ds1wm ds1wm: pass: 2 bus error, retrying
: ds1wm ds1wm: pass: 3 bus error, retrying
: ds1wm ds1wm: pass: 4 bus error, retrying
: ds1wm ds1wm: pass: 5 bus error, retrying
: ...
:
: The visible result is that the battery charging LED is erratic; sometimes
: it works, mostly it doesn't.
:
: The linux-2.6.39 DS1WM 1-wire driver worked OK.  I haven't tried 3.0-rc1,
: 3.0-rc2, or 3.0-rc3.

This sleep should not be required on normal circuitry provided the
pull-ups on the bus are correctly adapted to the slaves.  Unfortunately,
this is not always the case.  The sleep is restored but as a parameter to
the probe function in the pdata.

[akpm@linux-foundation.org: coding-style fixes]
Reported-by: Paul Parsons <lost.distance@yahoo.com>
Tested-by: Paul Parsons <lost.distance@yahoo.com>
Signed-off-by: Jean-François Dagenais <dagenaisj@sonatest.com>
Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-08 21:14:44 -07:00
..
masters w1: ds1wm: add a reset recovery parameter 2011-07-08 21:14:44 -07:00
slaves w1: add Maxim/Dallas DS2780 Stand-Alone Fuel Gauge IC support 2011-05-26 17:12:38 -07:00
Kconfig trivial: Kconfig: .ko is normally not included in module names 2009-06-12 18:01:50 +02:00
Makefile [PATCH] better CONFIG_W1_SLAVE_DS2433_CRC handling 2006-12-07 08:39:43 -08:00
w1_family.c W1: w1_family, remove unused variable need_exit 2008-10-16 11:21:50 -07:00
w1_family.h w1: add Maxim/Dallas DS2780 Stand-Alone Fuel Gauge IC support 2011-05-26 17:12:38 -07:00
w1_int.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
w1_int.h
w1_io.c w1: add 1-wire (w1) reset and resume command API support 2011-05-26 17:12:38 -07:00
w1_log.h drivers: replace remaining __FUNCTION__ occurrences 2008-04-30 08:29:53 -07:00
w1_netlink.c w1: have netlink search update kernel list 2011-05-26 17:12:38 -07:00
w1_netlink.h w1: send status messages after command processing 2009-01-08 08:31:14 -08:00
w1.c w1: have netlink search update kernel list 2011-05-26 17:12:38 -07:00
w1.h w1: have netlink search update kernel list 2011-05-26 17:12:38 -07:00