Merge branch 'xen-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen

[pandora-kernel.git] / Documentation / pci.txt

diff --git a/Documentation/pci.txt b/Documentation/pci.txt
index e2c9d0a..7754f5a 100644 (file)
--- a/Documentation/pci.txt
+++ b/Documentation/pci.txt
@@ -113,9 +113,6 @@ initialization with a pointer to a structure describing the driver
                (Please see Documentation/power/pci.txt for descriptions
                of PCI Power Management and the related functions.)
 
-       enable_wake     Enable device to generate wake events from a low power
-                       state.
-
        shutdown        Hook into reboot_notifier_list (kernel/sys.c).
                        Intended to stop any idling DMA operations.
                        Useful for enabling wake-on-lan (NIC) or changing
@@ -299,7 +296,10 @@ If the PCI device can use the PCI Memory-Write-Invalidate transaction,
 call pci_set_mwi().  This enables the PCI_COMMAND bit for Mem-Wr-Inval
 and also ensures that the cache line size register is set correctly.
 Check the return value of pci_set_mwi() as not all architectures
-or chip-sets may support Memory-Write-Invalidate.
+or chip-sets may support Memory-Write-Invalidate.  Alternatively,
+if Mem-Wr-Inval would be nice to have but is not required, call
+pci_try_set_mwi() to have the system do its best effort at enabling
+Mem-Wr-Inval.
 
 
 3.2 Request MMIO/IOP resources
@@ -373,7 +373,7 @@ E.g. clearing pending interrupts.
 
 3.6 Register IRQ handler
 ~~~~~~~~~~~~~~~~~~~~~~~~
-While calling request_irq() is the the last step described here,
+While calling request_irq() is the last step described here,
 this is often just another intermediate step to initialize a device.
 This step can often be deferred until the device is opened for use.