]> git.baikalelectronics.ru Git - kernel.git/commit
DMA-API: Clarify physical/bus address distinction
authorBjorn Helgaas <bhelgaas@google.com>
Wed, 30 Apr 2014 17:20:53 +0000 (11:20 -0600)
committerBjorn Helgaas <bhelgaas@google.com>
Tue, 20 May 2014 22:54:21 +0000 (16:54 -0600)
commitf3d7a367243a956da27b756e746f1d8e2b7e932e
tree007a1fb1dcfa6f9cb0baa26548af80b90148fabd
parent03a169e57a9a3fd69c1713c317a06f163ad63b5c
DMA-API: Clarify physical/bus address distinction

The DMA-API documentation sometimes refers to "physical addresses" when it
really means "bus addresses."  Sometimes these are identical, but they may
be different if the bridge leading to the bus performs address translation.
Update the documentation to use "bus address" when appropriate.

Also, consistently capitalize "DMA", use parens with function names, use
dev_printk() in examples, and reword a few sections for clarity.

No functional change; documentation changes only.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: James Bottomley <jbottomley@Parallels.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Documentation/DMA-API-HOWTO.txt
Documentation/DMA-API.txt
Documentation/DMA-ISA-LPC.txt
include/linux/dma-mapping.h
include/linux/types.h