original_kernel/drivers/char
Stephen Kitt a70b95c017 agp: ensure GART has an address before enabling it
Some BIOSs (eg.  the AMI BIOS on the Asus P4P800 motherboard) don't
initialise the GART address, and pcibios_assign_resources() can ignore it
because it can be marked as a host bridge (see
https://bugzilla.kernel.org/show_bug.cgi?id=24392#c5 for details).  This
was handled correctly up to 2.6.35, but the pci_enable_device() cleanup in
2.6.36 96576a9e1a ("agp: intel-agp: do not use PCI resources before
pci_enable_device()") means that the kernel tries to enable the GART
before assigning it an address; in such cases the GART overlaps with other
device assignments and ends up being disabled.

This patch fixes https://bugzilla.kernel.org/show_bug.cgi?id=24392

Note that I imagine efficeon-agp.c probably has the same problem, but
I can't test that and I'd like to make sure this patch is suitable for
-stable (since 2.6.36 and 2.6.37 are affected).

Signed-off-by: Stephen Kitt <steve@sk2.org>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Maciej Rutecki <maciej.rutecki@gmail.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Kulikov Vasiliy <segooon@gmail.com>
Cc: Florian Mickler <florian@mickler.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-02-04 09:43:57 +10:00
..
agp agp: ensure GART has an address before enabling it 2011-02-04 09:43:57 +10:00
hw_random
ip2
ipmi
mwave
pcmcia
rio
tpm
xilinx_hwicap
Kconfig
Makefile
amiserial.c
apm-emulation.c
applicom.c
applicom.h
bfin-otp.c
bfin_jtag_comm.c
briq_panel.c
bsr.c
cd1865.h
cyclades.c
digi1.h
digiFep1.h
digiPCI.h
ds1302.c
ds1620.c
dsp56k.c
dtlk.c
efirtc.c
epca.c
epca.h
epcaconfig.h
generic_nvram.c
generic_serial.c
genrtc.c
hangcheck-timer.c
hpet.c
i8k.c
isicom.c
istallion.c
lp.c
mbcs.c
mbcs.h
mem.c
misc.c
mmtimer.c
moxa.c
moxa.h
mspec.c
mxser.c
mxser.h
nozomi.c
nsc_gpio.c
nvram.c
nwbutton.c
nwbutton.h
nwflash.c
pc8736x_gpio.c
ppdev.c
ps3flash.c
ramoops.c
random.c
raw.c
riscom8.c
riscom8.h
riscom8_reg.h
rocket.c
rocket.h
rocket_int.h
rtc.c
scc.h
scx200_gpio.c
ser_a2232.c
ser_a2232.h
ser_a2232fw.ax
ser_a2232fw.h
serial167.c
snsc.c
snsc.h
snsc_event.c
sonypi.c
specialix.c
specialix_io8.h
stallion.c
sx.c
sx.h
sxboards.h
sxwindow.h
synclink.c
synclink_gt.c
synclinkmp.c
tb0219.c
tlclk.c
toshiba.c
ttyprintk.c
uv_mmtimer.c
viotape.c
vme_scc.c