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Revision 85a00d9bbfb4704fbf368944b1cb9fed8f1598c5 authored by Peter Jones on 22 September 2010, 20:05:04 UTC, committed by Linus Torvalds on 23 September 2010, 00:22:39 UTC 
efifb: check that the base address is plausible on pci systems
 
Some Apple machines have identical DMI data but different memory
configurations for the video.  Given that, check that the address in our
table is actually within the range of a PCI BAR on a VGA device in the
machine.

This also fixes up the return value from set_system(), which has always
been wrong, but never resulted in bad behavior since there's only ever
been one matching entry in the dmi table.

The patch

1) stops people's machines from crashing when we get their display wrong,
   which seems to be unfortunately inevitable,

2) allows us to support identical dmi data with differing video memory
   configurations

This also adds me as the efifb maintainer, since I've effectively been
acting as such for quite some time.

Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent a0c42ba
Raw File
Kconfig 
#
# Plug and Play configuration
#

menuconfig PNP
	bool "Plug and Play support"
	depends on HAS_IOMEM
	depends on ISA || ACPI
	---help---
	  Plug and Play (PnP) is a standard for peripherals which allows those
	  peripherals to be configured by software, e.g. assign IRQ's or other
	  parameters. No jumpers on the cards are needed, instead the values
	  are provided to the cards from the BIOS, from the operating system,
	  or using a user-space utility.

	  Say Y here if you would like Linux to configure your Plug and Play
	  devices. You should then also say Y to all of the protocols below.
	  Alternatively, you can say N here and configure your PnP devices
	  using user space utilities such as the isapnptools package.

	  If unsure, say Y.

config PNP_DEBUG_MESSAGES
	default y
	bool "PNP debugging messages"
	depends on PNP
	help
	  Say Y here if you want the PNP layer to be able to produce debugging
	  messages if needed.  The messages can be enabled at boot-time with
	  the pnp.debug kernel parameter.

	  This option allows you to save a bit of space if you do not want
	  the messages to even be built into the kernel.

	  If you have any doubts about this, say Y here.

if PNP

comment "Protocols"

source "drivers/pnp/isapnp/Kconfig"

source "drivers/pnp/pnpbios/Kconfig"

source "drivers/pnp/pnpacpi/Kconfig"

endif # PNP
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