Paul Walmsley 2acd089471 W1: OMAP HDQ1W: use 32-bit register accesses ... HDQ/1-wire registers are 32 bits long, even if the register contents fit into 8 bits, so accesses must be 32-bit aligned. Evidently the OMAP2/3 interconnects allowed the driver to get away with 8 bit accesses, but the OMAP4 puts a stop to that: [ 1.488800] Driver for 1-wire Dallas network protocol. [ 1.495025] Bad mode in data abort handler detected [ 1.500122] Internal error: Oops - bad mode: 0 [#1] SMP [ 1.505615] Modules linked in: [ 1.508819] CPU: 0 Not tainted (3.3.0-rc1-00008-g45030e9 #992) [ 1.515289] PC is at 0xffff0018 [ 1.518615] LR is at omap_hdq_probe+0xd4/0x2cc The OMAP4430 ES2 Rev X TRM does warn about this restriction in section 23.2.6.2 "HDQ/1-Wire Registers". Fixes the crash on OMAP4430 ES2 Pandaboard. Tested also on OMAP34xx and OMAP2420; it seems to work fine on those chips, although due to the lack of boards with HDQ/1-wire devices here, a more indepth test was not possible. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: NeilBrown <neilb@suse.de> Cc: Evgeniy Polyakov <zbr@ioremap.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net>		2012-06-21 21:40:37 -06:00
..
masters	W1: OMAP HDQ1W: use 32-bit register accesses	2012-06-21 21:40:37 -06:00
slaves	w1: w1_ds2408.c: quite sparse noise about using plaing integer as NULL pointer	2012-05-04 16:25:30 -07:00
Kconfig	Kconfig: replace "--- help ---" with "---help---"	2012-05-07 15:01:22 +02:00
Makefile
w1.c	w1: fix slave driver registration error message	2012-04-09 15:05:47 -07:00
w1.h
w1_family.c
w1_family.h	Revert "w1: Add 1-wire slave device driver for DS28E04-100"	2012-04-29 22:12:08 -04:00
w1_int.c	Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2011-11-06 19:44:47 -08:00
w1_int.h
w1_io.c	w1: Disable irqs during 1-wire bus operations, extend 1-wire reset pulse	2012-04-11 16:44:10 -07:00
w1_log.h
w1_netlink.c
w1_netlink.h