PCI: doc/pci: create Documentation/PCI/ and move files into it

Create Documentation/PCI/ and move PCI-related files to it.
Fix a few instances of trailing whitespace.
Update references to the new file locations.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Documentation/00-INDEX

@@ -25,8 +25,6 @@ DMA-API.txt
 	- DMA API, pci_ API & extensions for non-consistent memory machines.
 DMA-ISA-LPC.txt
 	- How to do DMA with ISA (and LPC) devices.
-DMA-mapping.txt
-	- info for PCI drivers using DMA portably across all platforms.
 DocBook/
 	- directory with DocBook templates etc. for kernel documentation.
 HOWTO
@@ -43,8 +41,6 @@ ManagementStyle
 	- how to (attempt to) manage kernel hackers.
 MSI-HOWTO.txt
 	- the Message Signaled Interrupts (MSI) Driver Guide HOWTO and FAQ.
-PCIEBUS-HOWTO.txt
-	- a guide describing the PCI Express Port Bus driver.
 RCU/
 	- directory with info on RCU (read-copy update).
 README.DAC960
@@ -285,12 +281,6 @@ parport.txt
 	- how to use the parallel-port driver.
 parport-lowlevel.txt
 	- description and usage of the low level parallel port functions.
-pci-error-recovery.txt
-	- info on PCI error recovery.
-pci.txt
-	- info on the PCI subsystem for device driver authors.
-pcieaer-howto.txt
-	- the PCI Express Advanced Error Reporting Driver Guide HOWTO.
 pcmcia/
 	- info on the Linux PCMCIA driver.
 pi-futex.txt

Documentation/PCI/00-INDEX

@@ -0,0 +1,12 @@
+00-INDEX
+	- this file
+PCI-DMA-mapping.txt
+	- info for PCI drivers using DMA portably across all platforms
+PCIEBUS-HOWTO.txt
+	- a guide describing the PCI Express Port Bus driver
+pci-error-recovery.txt
+	- info on PCI error recovery
+pci.txt
+	- info on the PCI subsystem for device driver authors
+pcieaer-howto.txt
+	- the PCI Express Advanced Error Reporting Driver Guide HOWTO

Documentation/PCI/PCIEBUS-HOWTO.txt

@@ -56,9 +56,9 @@ advantages of using the PCI Express Port Bus driver are listed below:
 
 	- Allow service drivers implemented in an independent
 	  staged approach.
-	
+
 	- Allow one service driver to run on multiple PCI-PCI Bridge
-	  Port devices. 
+	  Port devices.
 
 	- Manage and distribute resources of a PCI-PCI Bridge Port
 	  device to requested service drivers.
@@ -82,7 +82,7 @@ Model requires some minimal changes on existing service drivers that
 imposes no impact on the functionality of existing service drivers.
 
 A service driver is required to use the two APIs shown below to
-register its service with the PCI Express Port Bus driver (see 
+register its service with the PCI Express Port Bus driver (see
 section 5.2.1 & 5.2.2). It is important that a service driver
 initializes the pcie_port_service_driver data structure, included in
 header file /include/linux/pcieport_if.h, before calling these APIs.
@@ -137,7 +137,7 @@ driver.
 static int __init aerdrv_service_init(void)
 {
 	int retval = 0;
-	
+
 	retval = pcie_port_service_register(&root_aerdrv);
 	if (!retval) {
 		/*
@@ -147,7 +147,7 @@ static int __init aerdrv_service_init(void)
 	return retval;
 }
 
-static void __exit aerdrv_service_exit(void) 
+static void __exit aerdrv_service_exit(void)
 {
 	pcie_port_service_unregister(&root_aerdrv);
 }
@@ -175,7 +175,7 @@ same physical Root Port. Both service drivers call pci_enable_msi to
 request MSI based interrupts. A service driver may not know whether
 any other service drivers have run on this Root Port. If either one
 of them calls pci_disable_msi, it puts the other service driver
-in a wrong interrupt mode. 
+in a wrong interrupt mode.
 
 To avoid this situation all service drivers are not permitted to
 switch interrupt mode on its device. The PCI Express Port Bus driver

Documentation/PCI/pci.txt

@@ -119,7 +119,7 @@ initialization with a pointer to a structure describing the driver
 			the power state of a device before reboot.
 			e.g. drivers/net/e100.c.
 
-	err_handler	See Documentation/pci-error-recovery.txt
+	err_handler	See Documentation/PCI/pci-error-recovery.txt
 
 
 The ID table is an array of struct pci_device_id entries ending with an

Documentation/PCI/pcieaer-howto.txt

@@ -13,7 +13,7 @@ Reporting (AER) driver and provides information on how to use it, as
 well as how to enable the drivers of endpoint devices to conform with
 PCI Express AER driver.
 
-1.2 Copyright © Intel Corporation 2006.
+1.2 Copyright © Intel Corporation 2006.
 
 1.3 What is the PCI Express AER Driver?
 

Documentation/memory-barriers.txt

@@ -430,8 +430,8 @@ There are certain things that the Linux kernel memory barriers do not guarantee:
 
 	[*] For information on bus mastering DMA and coherency please read:
 
-	    Documentation/pci.txt
-	    Documentation/DMA-mapping.txt
+	    Documentation/PCI/pci.txt
+	    Documentation/PCI/PCI-DMA-mapping.txt
 	    Documentation/DMA-API.txt