ARM: PL08x: add comment explaining the flow control methods
authorRussell King - ARM Linux <linux@arm.linux.org.uk>
Mon, 3 Jan 2011 22:33:06 +0000 (22:33 +0000)
committerDan Williams <dan.j.williams@intel.com>
Wed, 5 Jan 2011 03:16:10 +0000 (19:16 -0800)
commit9dc2c200a0551754f91e1b322dcb3d782cd709b2
treeaab2fa7ea1ae3f191f5b6c7abdada93a3b232e02
parent3e2a037c1de79af999a54581cbf1e8a5c933fd95
ARM: PL08x: add comment explaining the flow control methods

Explain the two flow control methods which the PL08x implements, along
with the problem which peripheral flow control presents.  This helps
people understand why we are unable to use these DMA controllers with
(eg) the MMCI.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
drivers/dma/amba-pl08x.c