tmp_suning_uos_patched/drivers/video/via
Daniel Drake 012a121184 viafb: don't touch clock state on OLPC XO-1.5
As detailed in the thread titled "viafb PLL/clock tweaking causes XO-1.5
instability," enabling or disabling the IGA1/IGA2 clocks causes occasional
stability problems during suspend/resume cycles on this platform.

This is rather odd, as the documentation suggests that clocks have two
states (on/off) and the default (stable) configuration is configured to
enable the clock only when it is needed. However, explicitly enabling *or*
disabling the clock triggers this system instability, suggesting that there
is a 3rd state at play here.

Leaving the clock enable/disable registers alone solves this problem.
This fixes spurious reboots during suspend/resume behaviour introduced by
commit b692a63a.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: stable@vger.kernel.org
2012-09-22 21:31:01 +00:00
..
accel.c
accel.h
chip.h
debug.h
dvi.c
dvi.h
global.c
global.h
hw.c
hw.h
ioctl.c
ioctl.h
lcd.c
lcd.h
Makefile
share.h
tblDPASetting.c
tblDPASetting.h
via_aux_ch7301.c
via_aux_edid.c
via_aux_sii164.c
via_aux_vt1621.c
via_aux_vt1622.c
via_aux_vt1625.c
via_aux_vt1631.c
via_aux_vt1632.c
via_aux_vt1636.c
via_aux.c
via_aux.h
via_clock.c
via_clock.h
via_i2c.c
via_modesetting.c
via_modesetting.h
via_utility.c
via_utility.h
via-core.c
via-gpio.c
viafbdev.c
viafbdev.h
viamode.c
viamode.h
vt1636.c
vt1636.h