linux/drivers/pnp
Vojtech Pavlik ccc4c7bbd6 Fix DMA resource allocation in ACPIPnP
The ACPIPnP implementation had the understanding of Linux resource flags very
wrong, resulting in a nonfunctional implementation of DMA resource
allocation.

This was usually not a problem, since almost no on-board PnP devices use ISA
DMA, with the exception of ECP parallel ports. Even with that, parallel port
DMA is preconfigured by the BIOS, so this routine isn't normally called.

Except in the case where somebody does 'rmmod parport_pc; modprobe
parport_pc', where the rmmod case disables the ECP parallel port resources,
and they need to be enabled again to initialize the module. This didn't
work, resulting in a non-printing printer.

The application doing exactly the above to force reprobing of printers is
the YaST printer module. Thus without this fix YaST wedged the printer when
configuring it, and was not able to print a test page.

Reported-by: Ralf Flaxa <rf@suse.de>
Reproduced-by: Jiri Dluhos <jdluhos@suse.cz>
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-10-18 11:36:11 -07:00
..
isapnp [POWERPC] Use check_legacy_ioport() for ISAPnP 2006-10-02 20:27:36 +10:00
pnpacpi Fix DMA resource allocation in ACPIPnP 2006-10-18 11:36:11 -07:00
pnpbios [PATCH] update legacy io handling for pmac 2006-10-01 00:39:23 -07:00
Kconfig
Makefile
base.h
card.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
core.c
driver.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
interface.c PNP: Add missing casts in printk() arguments 2006-08-03 13:20:06 -07:00
manager.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
quirks.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
resource.c IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
support.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
system.c