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4 Commits

Author SHA1 Message Date
Will Deacon
915530396c Documentation: Kill all references to mmiowb() 
The guarantees provided by mmiowb() are now provided implicitly by
spin_unlock(), so remove all references to this most confusing of
barriers from our Documentation.

Good riddance.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
 2019-04-08 12:00:45 +01:00
Randy Dunlap
fcf9ab35ba PCI/P2PDMA: Clean up documentation and kernel-doc 
Fix typos, spellos, and grammar in p2pdma.rst and p2pdma.c.

Fix return value(s) in function pci_p2pmem_alloc_sgl().

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Logan Gunthorpe <logang@deltatee.com>
Cc: Jonathan Corbet <corbet@lwn.net>
 2018-12-11 07:53:07 -06:00
Logan Gunthorpe
e4f7a94803 PCI/P2PDMA: Add P2P DMA driver writer's documentation 
Add a restructured text file describing how to write drivers with support
for P2P DMA transactions.  The document describes how to use the APIs that
were added in the previous few commits.

Also adds an index for the PCI documentation tree even though this is the
only PCI document that has been converted to restructured text at this
time.

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
 2018-10-17 12:18:18 -05:00
Logan Gunthorpe
fcc78f9c22 docs-rst: Add a new directory for PCI documentation 
Add a new directory in the driver API guide for PCI-specific documentation.

This is in preparation for adding a new PCI P2P DMA driver writers guide
which will go in this directory.

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Logan Gunthorpe <logang@deltatee.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Sanyog Kale <sanyog.r.kale@intel.com>
Cc: Sagar Dharia <sdharia@codeaurora.org>
 2018-10-17 12:18:18 -05:00