Steven A. Falco 4c514aedd8 port_enable and port_reset must change atomically. ... I have observed two separate EHCI host bridges that do not tolerate using C bit-fields to directly manipulate the portsc_t register. The reason for this is that the EHCI spec says that port_enable must go to 0 at the time that port_reset goes to 1. Naturally this cannot be done using direct bit-field manipulation. Instead, we use a temporary variable, change the bit-fields there, then atomically write the new value back to the hardware. Signed-off-by: Steven A. Falco <sfalco@coincident.com> Change-Id: If138faee43e0293efa203b86f7893fdf1e811269 Reviewed-on: http://review.coreboot.org/101 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>		2011-07-17 10:22:23 +02:00
..
usb	port_enable and port_reset must change atomically.	2011-07-17 10:22:23 +02:00
video	libpayload: fix garbage on screen with Geode-LX VGA	2010-08-18 21:23:27 +00:00
Makefile.inc	Use coreboot build system for libpayload, too.	2011-06-30 20:40:10 +02:00
hid.c	make keyboard reset driver generic (not pc keyboard driver dependent)	2010-03-25 18:52:24 +00:00
keyboard.c	Reduce warnings/errors in libpayload when using picky compiler options	2011-06-30 20:41:23 +02:00
nvram.c	Since some people disapprove of white space cleanups mixed in regular commits	2010-04-27 06:56:47 +00:00
options.c	libpayload: Add function to fix CMOS checksum.	2010-08-17 10:14:50 +00:00
pci.c	[PATCH] libpayload: Fix the PCI search function	2008-10-20 16:52:06 +00:00
serial.c	Reduce warnings/errors in libpayload when using picky compiler options	2011-06-30 20:41:23 +02:00
speaker.c	Move curses/speaker.c to drivers/ as it's not curses-specific (trivial).	2008-04-15 17:24:08 +00:00